@article{KruseGerdesKathetal.2018,
  author    = {Kruse, Stefan and Gerdes, Alexander and Kath, Nadja J. and Herzschuh, Ulrike},
  title     = {Implementing spatially explicit wind-driven seed and pollen dispersal in the individual-based larch simulation model},
  series = {Geoscientific model development : an interactive open access journal of the European Geosciences Union},
  volume    = {11},
  journal   = {Geoscientific model development : an interactive open access journal of the European Geosciences Union},
  number    = {11},
  publisher = {Copernicus},
  address   = {G{\"o}ttingen},
  issn      = {1991-959X},
  doi       = {10.5194/gmd-11-4451-2018},
  pages     = {4451 -- 4467},
  year      = {2018},
  abstract  = {It is of major interest to estimate the feedback of arctic ecosystems to the global warming we expect in upcoming decades. The speed of this response is driven by the potential of species to migrate, tracking their climate optimum. For this, sessile plants have to produce and disperse seeds to newly available habitats, and pollination of ovules is needed for the seeds to be viable. These two processes are also the vectors that pass genetic information through a population. A restricted exchange among subpopulations might lead to a maladapted population due to diversity losses. Hence, a realistic implementation of these dispersal processes into a simulation model would allow an assessment of the importance of diversity for the migration of plant species in various environments worldwide. To date, dynamic global vegetation models have been optimized for a global application and overestimate the migration of biome shifts in currently warming temperatures. We hypothesize that this is caused by neglecting important fine-scale processes, which are necessary to estimate realistic vegetation trajectories. Recently, we built and parameterized a simulation model LAVESI for larches that dominate the latitudinal treelines in the northernmost areas of Siberia. In this study, we updated the vegetation model by including seed and pollen dispersal driven by wind speed and direction. The seed dispersal is modelled as a ballistic flight, and for the pollination of ovules of seeds produced, we implemented a wind-determined and distance-dependent probability distribution function using a von Mises distribution to select the pollen donor. A local sensitivity analysis of both processes supported the robustness of the model's results to the parameterization, although it highlighted the importance of recruitment and seed dispersal traits for migration rates. This individual-based and spatially explicit implementation of both dispersal processes makes it easily feasible to inherit plant traits and genetic information to assess the impact of migration processes on the genetics. Finally, we suggest how the final model can be applied to substantially help in unveiling the important drivers of migration dynamics and, with this, guide the improvement of recent global vegetation models.},
  language  = {en}
}
@article{LaeppleMuenchCasadoetal.2018,
  author    = {Laepple, Thomas and M{\"u}nch, Thomas and Casado, Mathieu and Hoerhold, Maria and Landais, Amaelle and Kipfstuhl, Sepp},
  title     = {On the similarity and apparent cycles of isotopic variations in East Antarctic snow pits},
  series = {The Cryosphere : TC ; an interactive open access journal of the European Geosciences Union},
  volume    = {12},
  journal   = {The Cryosphere : TC ; an interactive open access journal of the European Geosciences Union},
  number    = {1},
  publisher = {Copernicus},
  address   = {G{\"o}ttingen},
  issn      = {1994-0416},
  doi       = {10.5194/tc-12-169-2018},
  pages     = {169 -- 187},
  year      = {2018},
  abstract  = {Stable isotope ratios delta O-18 and delta D in polar ice provide a wealth of information about past climate evolution. Snow-pit studies allow us to relate observed weather and climate conditions to the measured isotope variations in the snow. They therefore offer the possibility to test our understanding of how isotope signals are formed and stored in firn and ice. As delta O-18 and delta D in the snowfall are strongly correlated to air temperature, isotopes in the near-surface snow are thought to record the seasonal cycle at a given site. Accordingly, the number of seasonal cycles observed over a given depth should depend on the accumulation rate of snow. However, snow-pit studies from different accumulation conditions in East Antarctica reported similar isotopic variability and comparable apparent cycles in the delta O-18 and delta D profiles with typical wavelengths of similar to 20 cm. These observations are unexpected as the accumulation rates strongly differ between the sites, ranging from 20 to 80mmw.e.yr(-1) (similar to 6-21 cm of snow per year). Various mechanisms have been proposed to explain the isotopic variations individually at each site; however, none of these are consistent with the similarity of the different profiles independent of the local accumulation conditions. Here, we systematically analyse the properties and origins of delta O-18 and delta D variations in high-resolution firn profiles from eight East Antarctic sites. First, we confirm the suggested cycle length (mean distance between peaks) of similar to 20 cm by counting the isotopic maxima. Spectral analysis further shows a strong similarity between the sites but indicates no dominant periodic features. Furthermore, the appar-ent cycle length increases with depth for most East Antarctic sites, which is inconsistent with burial and compression of a regular seasonal cycle. We show that these results can be explained by isotopic diffusion acting on a noise-dominated isotope signal. The firn diffusion length is rather stable across the Antarctic Plateau and thus leads to similar power spectral densities of the isotopic variations. This in turn implies a similar distance between isotopic maxima in the firn profiles. Our results explain a large set of observations discussed in the literature, providing a simple explanation for the interpretation of apparent cycles in shallow isotope records, without invoking complex mechanisms. Finally, the results underline previous suggestions that isotope signals in single ice cores from low-accumulation regions have a small signal-to-noise ratio and thus likely do not allow the reconstruction of interannual to decadal climate variations.},
  language  = {en}
}
@misc{Kałczewiak2019,
  author    = {Kałczewiak, Mariusz},
  title     = {Yiddish in the Andes},
  series = {Postprints der Universit{\"a}t Potsdam Humanwissenschaftliche Reihe},
  journal   = {Postprints der Universit{\"a}t Potsdam Humanwissenschaftliche Reihe},
  number    = {571},
  doi       = {10.25932/publishup-43506},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-435064},
  pages     = {21},
  year      = {2019},
  abstract  = {This article elucidates the efforts of Chilean-Jewish activists to create, manage and protect Chilean Yiddish culture. It illuminates how Yiddish cultural leaders in small diasporas, such as Chile, worked to maintain dialogue with other Jewish centers. Chilean culturists maintained that a unique Latin American Jewish culture existed and needed to be strengthened through the joint efforts of all Yiddish actors on the continent. Chilean activists envisioned a modern Jewish culture informed by both Eastern European influences and local Jewish cultural production, as well as by exchanges with non-Jewish Latin American majority cultures.},
  language  = {en}
}
@article{Wilhelm2018,
  author    = {Wilhelm, Jan Lorenz},
  title     = {Atmosphere in the home stadium of Hertha BSC (German Bundesliga)},
  series = {Social \& cultural geography},
  volume    = {21},
  journal   = {Social \& cultural geography},
  number    = {5},
  publisher = {Routledge, Taylor \& Francis Group},
  address   = {London},
  issn      = {1464-9365},
  doi       = {10.1080/14649365.2018.1514646},
  pages     = {718 -- 737},
  year      = {2018},
  abstract  = {German football stadiums are well known for their atmosphere. It is often described as 'electrifying,' or 'cracking.' This article focuses on this atmosphere. Using a phenomenological approach, it explores how this emotionality can be understood and how geography matters while attending a match. Atmosphere in this context is conceptualized based on work by as a mood-charged space, neither object- nor subject-centered, but rather a medium of perception which cannot not exist. Based on qualitative research done in the home stadium of Hertha BSC in the German Bundesliga, this article shows that the bodily sensations experienced by spectators during a visit to the stadium are synchronized with events on the pitch and with the more or less imposing scenery. The analysis ofin situdiaries reveals that spectators experience a comprehensive sense of collectivity. The study presents evidence that the occurrence of these bodily sensations is strongly connected with different aspects of spatiality. This includes sensations of constriction and expansion within the body, an awareness of one's location within the stadium, the influence of the immediate surroundings and cognitive here/there and inside/outside distinctions.},
  language  = {en}
}
@article{LangeBuerkner2021,
  author    = {Lange, Bastian and B{\"u}rkner, Hans-Joachim},
  title     = {Geographien experimenteller Arbeitsformen},
  series = {Mitteilungen der {\"O}sterreichischen Geographischen Gesellschaft},
  volume    = {162},
  journal   = {Mitteilungen der {\"O}sterreichischen Geographischen Gesellschaft},
  publisher = {{\"O}sterreichische Geographische Gesellschaft},
  address   = {Wien},
  isbn      = {978-3-901313-34-9},
  issn      = {0029-9138},
  doi       = {10.1553/moegg162s287},
  pages     = {287 -- 312},
  year      = {2021},
  abstract  = {Die Diskussion um Postwachstumsprozesse hat die kleinen, fr{\"u}her unbeachtet gebliebenen Orte der Innovation entdeckt. Ungeplant und unkoordiniert entstandene Produktions- und Arbeitsformen wie zum Beispiel Fab Labs, Offene Werkst{\"a}tten, Reallabore, Techshops, Repair Caf{\´e}s und andere entziehen sich weitgehend den gewohnten Erkl{\"a}rungs- und Beschreibungskategorien der sozialwissenschaftlichen Forschung. Die Komplexit{\"a}t ihrer Erscheinungsformen, ihre heterogene Verursachung, ihre kontingente Weiterentwicklung und ihre hybriden Arbeitsprozesse erfordern ergebnisoffene analytische Rekonstruktionen. Das Ziel dieses Beitrags ist es, auf der Basis praxisnaher T{\"a}tigkeitsbeschreibungen jeweils Prozesse der Raumkontextualisierung und -zuschreibung zu rekonstruieren. Dies geschieht auf der Basis der leitenden Frage, inwieweit neue Arbeitsformen mit spezifischen Raumbez{\"u}gen einhergehen und eine differenzierte Sicht auf unterschiedliche Prozesse der Ortsbildung erforderlich machen. Als analytischer Referenzfall werden Offene Werkst{\"a}tten und die in ihnen vorherrschenden Arbeitsformen genauer betrachtet.},
  language  = {de}
}
@book{OPUS4-1338,
  title     = {Die Dobrudscha : ethnische Minderheiten, Kulturlandschaft, Transformation; Ergebnisse eines Gel{\"a}ndekurses des Instituts f{\"u}r Geographie der Universit{\"a}t Potsdam im S{\"u}dosten Rum{\"a}niens. - 2. Aufl.},
  editor    = {Sallanz, Josef},
  publisher = {Universit{\"a}tsverlag Potsdam},
  address   = {Potsdam},
  isbn      = {978-3-937786-76-6},
  issn      = {1868-2499},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-14654},
  publisher      = {Universit{\"a}t Potsdam},
  pages     = {155},
  year      = {2005},
  abstract  = {Im Zuge des Transformations- und Globalisierungsprozesses in Rum{\"a}nien kommt es in den letzten 15 Jahren zu einer Ann{\"a}herung an westliche Lebensmuster und parallel dazu zu einer Binnendiversifizierung der Lebensverh{\"a}ltnisse. Allerdings wird das Land nicht fl{\"a}chendeckend von den internationalen {\"o}konomischen Verflechtungen erfasst, sondern es l{\"a}sst sich eine noch st{\"a}rkere regionale Ausdifferenzierung als vor der Wende von 1989 beobachten. Traditionelle und moderne Gesellschaften leben nach wie vor nebeneinander. In vielen l{\"a}ndlichen R{\"a}umen Rum{\"a}niens, so besonders in der wirtschaftlich eher schwachen Dobrudscha, haben sich traditionelle Lebensweisen, Besitzstrukturen, Arbeitstechniken und Bewirtschaftungsformen bis in die heutige Zeit erhalten. Im September 2004 wurden im Rahmen eines Gel{\"a}ndekurses unter Ber{\"u}cksichtigung der Raum- und Minderheitenforschung sechs ausgew{\"a}hlte ethnische Minderheiten der Kulturlandschaft Dobrudscha, die in der wissenschaftlichen Literatur meist nur am Rande untersucht wird, w{\"a}hrend des noch laufenden Transformationsprozesses genauer betrachtet. Dabei wurde mit Hilfe von Experten- und Betroffenen-Interviews die ethnische, {\"o}konomische, politische und kulturelle Situation in der Region dargestellt und analysiert. Karten, Tabellen und 50 Farbfotografien erg{\"a}nzen den Band.},
  language  = {de}
}
@phdthesis{Wilde2014,
  author    = {Wilde, Anja},
  title     = {Auspr{\"a}gungen r{\"a}umlicher Identit{\"a}t in ehemaligen sudetendeutschen Gebieten der Tschechischen Republik},
  publisher = {Universit{\"a}tsverlag Potsdam},
  address   = {Potsdam},
  isbn      = {978-3-86956-311-4},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-70247},
  school      = {Universit{\"a}t Potsdam},
  pages     = {XVI, 395},
  year      = {2014},
  abstract  = {Das tschechische Grenzgebiet ist eine der Regionen in Europa, die in der Folge des Zweiten Weltkrieges am gravierendsten von Umbr{\"u}chen in der zuvor bestehenden Bev{\"o}lkerungsstruktur betroffen waren. Der erzwungenen Aussiedlung eines Großteils der ans{\"a}ssigen Bev{\"o}lkerung folgten die Neubesiedlung durch verschiedenste Zuwanderergruppen sowie teilweise langanhaltende Fluktuationen der Einwohnerschaft. Die Stabilisierung der Bev{\"o}lkerung stand sodann unter dem Zeichen der sozialistischen Gesellschafts- und Wirtschaftsordnung, die die Lebensweise und Raumwahrnehmung der neuen Einwohner nachhaltig pr{\"a}gte. Die Grenz{\"o}ffnung von 1989, die politische Transformation sowie die Integration der Tschechischen Republik in die Europ{\"a}ische Union brachten neue demographische und sozio{\"o}konomische Entwicklungen mit sich. Sie schufen aber auch die Bedingungen daf{\"u}r, sich neu und offen auch mit der spezifischen Geschichte des ehemaligen Sudetenlandes sowie mit dem Zustand der gegenw{\"a}rtigen Gesellschaft in diesem Gebiet auseinanderzusetzen. Im Rahmen der vorliegenden Arbeit wird anhand zweier Beispielregionen untersucht, welche Raumvorstellungen und Raumbindungen bei der heute in den ehemaligen sudetendeutschen Gebieten ans{\"a}ssigen Bev{\"o}lkerung vorhanden sind und welche Einfl{\"u}sse die unterschiedlichen raumstrukturellen Bedingungen darauf aus{\"u}ben. Besonderes Augenmerk wird auf die soziale Komponente der Auspr{\"a}gung r{\"a}umlicher Identit{\"a}t gelegt, das heißt auf die Rolle von Bedeutungszuweisungen gegen{\"u}ber Raumelementen im Rahmen sozialer Kommunikation und Interaktion. Dies erscheint von besonderer Relevanz in einem Raum, der sich durch eine gewisse Heterogenit{\"a}t seiner Einwohnerschaft hinsichtlich ihres ethnischen, kulturellen beziehungsweise biographischen Hintergrundes auszeichnet. Schließlich wird ermittelt, welche Impulse unter Umst{\"a}nden von einer ausgepr{\"a}gten r{\"a}umlichen Identit{\"a}t f{\"u}r die Entwicklung des Raumes ausgehen.},
  language  = {de}
}
@book{OPUS4-1092,
  title     = {"Bewegende R{\"a}ume" - Streiflichter multidisziplin{\"a}rer Raumverst{\"a}ndnisse : Festschrift anl{\"a}sslich der Verabschiedung von Frau Prof. Dr. Gabriele Saupe am 26.11.2004},
  editor    = {Ziener, Karen and Carstensen, Ines and Goltz, Elke},
  publisher = {Universit{\"a}tsverlag Potsdam},
  address   = {Potsdam},
  isbn      = {978-3-937786-80-3},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-11748},
  publisher      = {Universit{\"a}t Potsdam},
  pages     = {206},
  year      = {2005},
  abstract  = {Die vorliegende Festschrift wird Frau Prof. Gabrielle Saupe anl{\"a}sslich ihrer Verabschiedung aus dem Institut f{\"u}r Geographie der Universit{\"a}t Potsdam gewidmet. Bewegende R{\"a}ume - damit sind emotionale, materielle und strukturelle Bewegungen in einem r{\"a}umlichen Kontext gemeint. Die Vieldeutigkeit des Titels impliziert die Vielfalt der wissenschaftlichen Auseinandersetzung mit dem Raum. Ein illustres Autorenkollektiv deutscher Raumwissenschaftler verdeutlicht anhand von verschiedenen zum Teil essayartigen Artikeln sein Verst{\"a}ndnis von Raum. Die interdisziplin{\"a}re Konzeption des Heftes soll das st{\"a}ndige Bem{\"u}hen von Frau Saupe verdeutlichen, verschiedene Perspektiven, Herangehensweisen und Fachdisziplinen zur Bew{\"a}ltigung der Forschungsaufgaben zusammenzuf{\"u}hren. Hierbei sind die wichtigsten Forschungsprojekte von Frau Saupe ebenso vertreten wie einige der von ihr betreuten Qualifikationsarbeiten. Die Beitr{\"a}ge reichen von der Landschafts- bzw. Geo{\"o}kologie bis zum Fußball und der Musik. Sie spannen einen Bogen von der Geographie als Regionalwissenschaft zu modernen stadtsoziologischen Fragestellungen, stellen Ergebnisse neuerer Forschungsprojekte vor und widmen sich der Entwicklung von nahen und fernen R{\"a}umen aus verschiedenen Perspektiven.},
  language  = {de}
}
@book{Richter2007,
  author    = {Richter, Dietmar},
  title     = {Fl{\"a}chennutzungswandel in Tirana : Untersuchungen anhand von Landsat TM, Terra ASTER und GIS},
  publisher = {Universit{\"a}tsverlag Potsdam},
  address   = {Potsdam},
  isbn      = {978-3-939469-64-3},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-13018},
  publisher      = {Universit{\"a}t Potsdam},
  pages     = {90},
  year      = {2007},
  abstract  = {Die Zuwanderung nach Tirana f{\"u}hrte im Verlauf der 1990er Jahre zu einem enormen Fl{\"a}chenverbrauch auf Kosten landwirtschaftlicher Fl{\"a}chen im Umland der albanischen Hauptstadt. Im Rahmen der vorliegenden Arbeit wird die Entwicklung des rasanten Fl{\"a}chenverbrauchs mit computergest{\"u}tzten Methoden dokumentiert. Grundlage der Untersuchung bilden zwei zu unterschiedlichen Zeitpunkten (1988 und 2000) aufgenommene Satellitenszenen, mit Hilfe derer eine {\"A}nderungsanalyse durchgef{\"u}hrt wird. Ziel der {\"A}nderungsanalyse ist es, den Fl{\"a}chennutzungswandel zu analysieren, Daten zu generieren und die Ergebnisse in geeigneter Weise zu visualisieren. Zu den protagonistischen Verfahren der {\"A}nderungsanalyse z{\"a}hlen sowohl die Maximum-Likelihood Klassifikation sowie ein wissensbasierter Klassifizierungsansatz. Die Ergebnisse der {\"A}nderungsanalyse werden in {\"A}nderungskarten dargestellt und mittels einer GIS-Software statistisch ausgewertet.},
  language  = {de}
}
@book{Hofmann2006,
  author    = {Hofmann, Juliane},
  title     = {The best of both worlds},
  series = {Praxis Kultur- und Sozialgeographie},
  journal   = {Praxis Kultur- und Sozialgeographie},
  number    = {38},
  publisher = {Universit{\"a}tsverlag Potsdam},
  address   = {Potsdam},
  isbn      = {978-3-939469-24-7},
  issn      = {1868-2499},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-11714},
  publisher      = {Universit{\"a}t Potsdam},
  pages     = {134},
  year      = {2006},
  abstract  = {Gegenstand der Publikation ist eine Art der Transmigration, die nicht, wie in der bisherigen Forschungsliteratur aufgezeigt, durch die {\"U}berbr{\"u}ckung des Wohlstandsgef{\"a}lles entsteht, sondern durch die Verwirklichung eines bestimmten Lebensstils. In mehreren Interviews mit drei Seglern, die - neben der Teilnahme an internationalen Regatten - aus Sets verschiedener Motive zwischen Neuseeland und Europa pendeln, wird deren Lebenswelt als "Long distance-Transmigranten" dargestellt und miteinander verglichen. Im theoretischen Teil werden die Befunde der Fallstudie in die wissenschaftliche Debatte eingeordnet. Ein Abriss zur Kritik sowie die Konsequenzen dieser f{\"u}r die Arbeit werden gezogen. Der Nachweis, dass die untersuchten Probanden "Sonderf{\"a}lle" darstellen, wird erbracht und die Einf{\"u}hrung eines eigenen wissenschaftlichen Begriffes f{\"u}r dieses neue Migrationsph{\"a}nomen erfolgt. Obgleich diese Studie auf einer relativ schmalen empirischen Basis erwachsen ist, zeichnet sie sich durch das innovative Vorgehen der Autorin aus.},
  subject      = {Lebensstil},
  language  = {de}
}
@book{OPUS4-1090,
  title     = {Die Islamische Republik Iran : eine Studienreise},
  editor    = {Felgentreff, Carsten},
  isbn      = {978-3-939469-25-4},
  issn      = {1868-2499},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-11726},
  publisher      = {Universit{\"a}t Potsdam},
  year      = {2006},
  abstract  = {Die vorliegende Schrift "Die Islamische Republik Iran" erw{\"a}chst aus der Durchf{\"u}hrung sowie der Vor- und Nachbereitung einer Studienreise von Studenten in den Iran. Im Herbst 2004 reist die Gruppe nach Teheran und lernt neben den dem Alborz-Gebirge und der Kaspi-Region auch die St{\"a}dte Shiraz, Persepolis, Yazd und Esfahan kennen. In acht Einzelbeitr{\"a}gen vermitteln die Studenten unter dem Eindruck des selbst Gesehenen und Erlebten und in der Literatur Erarbeiteten einen {\"U}berblick zum politisch-administrativen System der Islamischen Republik Iran, zur Wirtschaft, zur Bev{\"o}lkerungsentwicklung, zur Stadtstruktur im islamischen Orient und in der Hauptstadt, zur Migration im Zusammenhang mit dem Iran-Irak-Krieg, zur Binnenwanderung sowie zu ausgew{\"a}hlten Aspekten der Außenpolitik.},
  subject      = {Iran},
  language  = {de}
}
@misc{SkinnerCoulthardSchwanghartetal.2018,
  author    = {Skinner, Christopher J. and Coulthard, Tom J. and Schwanghart, Wolfgang and Van De Wiel, Marco J. and Hancock, Greg},
  title     = {Global sensitivity analysis of parameter uncertainty in landscape evolution models},
  series = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  journal   = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  number    = {1084},
  issn      = {1866-8372},
  doi       = {10.25932/publishup-46801},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-468013},
  pages     = {4873 -- 4888},
  year      = {2018},
  abstract  = {The evaluation and verification of landscape evolution models (LEMs) has long been limited by a lack of suitable observational data and statistical measures which can fully capture the complexity of landscape changes. This lack of data limits the use of objective function based evaluation prolific in other modelling fields, and restricts the application of sensitivity analyses in the models and the consequent assessment of model uncertainties. To overcome this deficiency, a novel model function approach has been developed, with each model function representing an aspect of model behaviour, which allows for the application of sensitivity analyses. The model function approach is used to assess the relative sensitivity of the CAESAR-Lisflood LEM to a set of model parameters by applying the Morris method sensitivity analysis for two contrasting catchments. The test revealed that the model was most sensitive to the choice of the sediment transport formula for both catchments, and that each parameter influenced model behaviours differently, with model functions relating to internal geomorphic changes responding in a different way to those relating to the sediment yields from the catchment outlet. The model functions proved useful for providing a way of evaluating the sensitivity of LEMs in the absence of data and methods for an objective function approach.},
  language  = {en}
}
@misc{LaudanZoellerThieken2020,
  author    = {Laudan, Jonas and Z{\"o}ller, Gert and Thieken, Annegret Henriette},
  title     = {Flash floods versus river floods},
  series = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  journal   = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  number    = {968},
  issn      = {1866-8372},
  doi       = {10.25932/publishup-47397},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-473974},
  pages     = {999 -- 1023},
  year      = {2020},
  abstract  = {River floods are among the most damaging natural hazards that frequently occur in Germany. Flooding causes high economic losses and impacts many residents. In 2016, several southern German municipalities were hit by flash floods after unexpectedly severe heavy rainfall, while in 2013 widespread river flooding had occurred. This study investigates and compares the psychological impacts of river floods and flash floods and potential consequences for precautionary behaviour. Data were collected using computer-aided telephone interviews that were conducted among flood-affected households around 9 months after each damaging event. This study applies Bayesian statistics and negative binomial regressions to test the suitability of psychological indicators to predict the precaution motivation of individuals. The results show that it is not the particular flood type but rather the severity and local impacts of the event that are crucial for the different, and potentially negative, impacts on mental health. According to the used data, however, predictions of the individual precaution motivation should not be based on the derived psychological indicators - i.e. coping appraisal, threat appraisal, burden and evasion - since their explanatory power was generally low and results are, for the most part, non-significant. Only burden reveals a significant positive relation to planned precaution regarding weak flash floods. In contrast to weak flash floods and river floods, the perceived threat of strong flash floods is significantly lower although feelings of burden and lower coping appraisals are more pronounced. Further research is needed to better include psychological assessment procedures and to focus on alternative data sources regarding floods and the connected precaution motivation of affected residents.},
  language  = {en}
}
@misc{KruseGerdesKathetal.2018,
  author    = {Kruse, Stefan and Gerdes, Alexander and Kath, Nadja J. and Herzschuh, Ulrike},
  title     = {Implementing spatially explicit wind-driven seed and pollen dispersal in the individual-based larch simulation model},
  series = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  journal   = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  number    = {929},
  issn      = {1866-8372},
  doi       = {10.25932/publishup-44597},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-445978},
  pages     = {4451 -- 4467},
  year      = {2018},
  abstract  = {It is of major interest to estimate the feedback of arctic ecosystems to the global warming we expect in upcoming decades. The speed of this response is driven by the potential of species to migrate, tracking their climate optimum. For this, sessile plants have to produce and disperse seeds to newly available habitats, and pollination of ovules is needed for the seeds to be viable. These two processes are also the vectors that pass genetic information through a population. A restricted exchange among subpopulations might lead to a maladapted population due to diversity losses. Hence, a realistic implementation of these dispersal processes into a simulation model would allow an assessment of the importance of diversity for the migration of plant species in various environments worldwide. To date, dynamic global vegetation models have been optimized for a global application and overestimate the migration of biome shifts in currently warming temperatures. We hypothesize that this is caused by neglecting important fine-scale processes, which are necessary to estimate realistic vegetation trajectories. Recently, we built and parameterized a simulation model LAVESI for larches that dominate the latitudinal treelines in the northernmost areas of Siberia. In this study, we updated the vegetation model by including seed and pollen dispersal driven by wind speed and direction. The seed dispersal is modelled as a ballistic flight, and for the pollination of ovules of seeds produced, we implemented a wind-determined and distance-dependent probability distribution function using a von Mises distribution to select the pollen donor. A local sensitivity analysis of both processes supported the robustness of the model's results to the parameterization, although it highlighted the importance of recruitment and seed dispersal traits for migration rates. This individual-based and spatially explicit implementation of both dispersal processes makes it easily feasible to inherit plant traits and genetic information to assess the impact of migration processes on the genetics. Finally, we suggest how the final model can be applied to substantially help in unveiling the important drivers of migration dynamics and, with this, guide the improvement of recent global vegetation models.},
  language  = {en}
}
@misc{LaeppleMuenchCasadoetal.2018,
  author    = {Laepple, Thomas and M{\"u}nch, Thomas and Casado, Mathieu and Hoerhold, Maria and Landais, Amaelle and Kipfstuhl, Sepp},
  title     = {On the similarity and apparent cycles of isotopic variations in East Antarctic snow pits},
  series = {Postprints der Universit{\"a}t Potsdam Mathematisch-Naturwissenschaftliche Reihe},
  journal   = {Postprints der Universit{\"a}t Potsdam Mathematisch-Naturwissenschaftliche Reihe},
  number    = {932},
  issn      = {1866-8372},
  doi       = {10.25932/publishup-44605},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-446052},
  pages     = {169 -- 187},
  year      = {2018},
  abstract  = {Stable isotope ratios delta O-18 and delta D in polar ice provide a wealth of information about past climate evolution. Snow-pit studies allow us to relate observed weather and climate conditions to the measured isotope variations in the snow. They therefore offer the possibility to test our understanding of how isotope signals are formed and stored in firn and ice. As delta O-18 and delta D in the snowfall are strongly correlated to air temperature, isotopes in the near-surface snow are thought to record the seasonal cycle at a given site. Accordingly, the number of seasonal cycles observed over a given depth should depend on the accumulation rate of snow. However, snow-pit studies from different accumulation conditions in East Antarctica reported similar isotopic variability and comparable apparent cycles in the delta O-18 and delta D profiles with typical wavelengths of similar to 20 cm. These observations are unexpected as the accumulation rates strongly differ between the sites, ranging from 20 to 80mmw.e.yr(-1) (similar to 6-21 cm of snow per year). Various mechanisms have been proposed to explain the isotopic variations individually at each site; however, none of these are consistent with the similarity of the different profiles independent of the local accumulation conditions. Here, we systematically analyse the properties and origins of delta O-18 and delta D variations in high-resolution firn profiles from eight East Antarctic sites. First, we confirm the suggested cycle length (mean distance between peaks) of similar to 20 cm by counting the isotopic maxima. Spectral analysis further shows a strong similarity between the sites but indicates no dominant periodic features. Furthermore, the appar-ent cycle length increases with depth for most East Antarctic sites, which is inconsistent with burial and compression of a regular seasonal cycle. We show that these results can be explained by isotopic diffusion acting on a noise-dominated isotope signal. The firn diffusion length is rather stable across the Antarctic Plateau and thus leads to similar power spectral densities of the isotopic variations. This in turn implies a similar distance between isotopic maxima in the firn profiles. Our results explain a large set of observations discussed in the literature, providing a simple explanation for the interpretation of apparent cycles in shallow isotope records, without invoking complex mechanisms. Finally, the results underline previous suggestions that isotope signals in single ice cores from low-accumulation regions have a small signal-to-noise ratio and thus likely do not allow the reconstruction of interannual to decadal climate variations.},
  language  = {en}
}
@misc{ZwiebackKokeljGuentheretal.2018,
  author    = {Zwieback, Simon and Kokelj, Steven V. and G{\"u}nther, Frank and Boike, Julia and Grosse, Guido and Hajnsek, Irena},
  title     = {Sub-seasonal thaw slump mass wasting is not consistently energy limited at the landscape scale},
  series = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  journal   = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  number    = {926},
  issn      = {1866-8372},
  doi       = {10.25932/publishup-44568},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-445688},
  pages     = {549 -- 564},
  year      = {2018},
  abstract  = {Predicting future thaw slump activity requires a sound understanding of the atmospheric drivers and geomorphic controls on mass wasting across a range of timescales. On sub-seasonal timescales, sparse measurements indicate that mass wasting at active slumps is often limited by the energy available for melting ground ice, but other factors such as rainfall or the formation of an insulating veneer may also be relevant. To study the sub-seasonal drivers, we derive topographic changes from single-pass radar interferometric data acquired by the TanDEM-X satellites. The estimated elevation changes at 12m resolution complement the commonly observed planimetric retreat rates by providing information on volume losses. Their high vertical precision (around 30 cm), frequent observations (11 days) and large coverage (5000 km(2)) allow us to track mass wasting as drivers such as the available energy change during the summer of 2015 in two study regions. We find that thaw slumps in the Tuktoyaktuk coastlands, Canada, are not energy limited in June, as they undergo limited mass wasting (height loss of around 0 cm day 1) despite the ample available energy, suggesting the widespread presence of early season insulating snow or debris veneer. Later in summer, height losses generally increase (around 3 cm day 1), but they do so in distinct ways. For many slumps, mass wasting tracks the available energy, a temporal pattern that is also observed at coastal yedoma cliffs on the Bykovsky Peninsula, Russia. However, the other two common temporal trajectories are asynchronous with the available energy, as they track strong precipitation events or show a sudden speed-up in late August respectively. The observed temporal patterns are poorly related to slump characteristics like the headwall height. The contrasting temporal behaviour of nearby thaw slumps highlights the importance of complex local and temporally varying controls on mass wasting.},
  language  = {en}
}
@misc{McLaughlin2021,
  author    = {McLaughlin, Carly},
  title     = {Rezension zu: Children's voices from the past: new historical and interdisciplinary perspectives. - Hrsg.: Kristine Moruzi, Nell Musgrove; Carla Pascoe Leahy. - Cham : Springer, Palgrave Macmillan, 2019. - 342 S. - ISBN: 978-3-030-11895-2},
  series = {Australian historical studies : a journal of Australian history / Department of History, the University of Melbourne},
  volume    = {52},
  journal   = {Australian historical studies : a journal of Australian history / Department of History, the University of Melbourne},
  number    = {2},
  publisher = {Routledge, Taylor \& Francis Group},
  address   = {Abingdon},
  isbn      = {978-3-030-11895-2},
  issn      = {1031-461X},
  doi       = {10.1080/1031461X.2021.1905223},
  pages     = {310 -- 311},
  year      = {2021},
  language  = {en}
}
@misc{SchmidtSachseWalz2016,
  author    = {Schmidt, Katja and Sachse, Ren{\´e} and Walz, Ariane},
  title     = {Current role of social benefits in ecosystem service assessments},
  series = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  journal   = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  number    = {915},
  issn      = {1866-8372},
  doi       = {10.25932/publishup-44202},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-442024},
  pages     = {49 -- 64},
  year      = {2016},
  abstract  = {Ecosystem services have a significant impact on human wellbeing. While ecosystem services are frequently represented by monetary values, social values and underlying social benefits remain under explored. The purpose of this study is to assess whether and how social benefits have been explicitly addressed within socio-economic and socio-cultural ecosystem services research, ultimately allowing a better understanding between ecosystem services and human well-being. In this paper, we reviewed 115 international primary valuation studies and tested four hypotheses associated to the identification of social benefits of ecosystem services using logistic regressions. Tested hypotheses were that (1) social benefits are mostly derived in studies that assess cultural ecosystem services as opposed to other ecosystem service types, (2) there is a pattern of social benefits and certain cultural ecosystem services assessed simultaneously, (3) monetary valuation techniques go beyond expressing monetary values and convey social benefits, and (4) directly addressing stakeholder's views the consideration of social benefits in ecosystem service assessments. Our analysis revealed that (1) a variety of social benefits are valued in studies that assess either of the four ecosystem service types, (2) certain social benefits are likely to co-occur in combination with certain cultural ecosystem services, (3) of the studies that employed monetary valuation techniques, simulated market approaches overlapped most frequently with the assessment of social benefits and (4) studies that directly incorporate stakeholder's views were more likely to also assess social benefits. (C) 2016 Elsevier B.V. All rights reserved.},
  language  = {en}
}
@misc{SchmidtWalzJonesetal.2016,
  author    = {Schmidt, Katja and Walz, Ariane and Jones, Isobel and Metzger, Marc J.},
  title     = {The sociocultural value of upland regions in the vicinity of cities in comparison with urban green spaces},
  series = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  journal   = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  number    = {920},
  issn      = {1866-8372},
  doi       = {10.25932/publishup-44201},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-442010},
  pages     = {465 -- 474},
  year      = {2016},
  abstract  = {Mountain and upland regions provide a wide range of ecosystem services to residents and visitors. While ecosystem research in mountain regions is on the rise, the linkages between sociocultural benefits and ecological systems remain little explored. Mountainous regions close to urban areas provide numerous benefits to a large number of individuals, suggesting a high social value, particularly for cultural ecosystem services. We explored and compared visitors' valuation of ecosystem services in the Pentland Hills, an upland range close to the city of Edinburgh, Scotland, and urban green spaces within Edinburgh. Based on 715 responses to user surveys in both study areas, we identified intense use and high social value for both areas. Several ecosystem services were perceived as equally important in both areas, including many cultural ecosystem services. Significant differences were revealed in the value of physically using nature, which Pentland Hills users rated more highly than those in the urban green spaces, and of mitigation of pollutants and carbon sequestration, for which the urban green spaces were valued more highly. Major differences were further identified for preferences in future land management, with nature-oriented management preferred by about 57\% of the interviewees in the Pentland Hills, compared to 31\% in the urban parks. The study highlights the substantial value of upland areas in close vicinity to a city for physically using and experiencing nature, with a strong acceptance of nature conservation.},
  language  = {en}
}
@article{LaudanZoellerThieken2020,
  author    = {Laudan, Jonas and Z{\"o}ller, Gert and Thieken, Annegret Henriette},
  title     = {Flash floods versus river floods},
  series = {Natural Hazards and Earth System Sciences},
  volume    = {20},
  journal   = {Natural Hazards and Earth System Sciences},
  publisher = {European Geophysical Society},
  address   = {Katlenburg-Lindau},
  issn      = {1684-9981},
  doi       = {10.5194/nhess-20-999-2020},
  pages     = {999 -- 1023},
  year      = {2020},
  abstract  = {River floods are among the most damaging natural hazards that frequently occur in Germany. Flooding causes high economic losses and impacts many residents. In 2016, several southern German municipalities were hit by flash floods after unexpectedly severe heavy rainfall, while in 2013 widespread river flooding had occurred. This study investigates and compares the psychological impacts of river floods and flash floods and potential consequences for precautionary behaviour. Data were collected using computer-aided telephone interviews that were conducted among flood-affected households around 9 months after each damaging event. This study applies Bayesian statistics and negative binomial regressions to test the suitability of psychological indicators to predict the precaution motivation of individuals. The results show that it is not the particular flood type but rather the severity and local impacts of the event that are crucial for the different, and potentially negative, impacts on mental health. According to the used data, however, predictions of the individual precaution motivation should not be based on the derived psychological indicators - i.e. coping appraisal, threat appraisal, burden and evasion - since their explanatory power was generally low and results are, for the most part, non-significant. Only burden reveals a significant positive relation to planned precaution regarding weak flash floods. In contrast to weak flash floods and river floods, the perceived threat of strong flash floods is significantly lower although feelings of burden and lower coping appraisals are more pronounced. Further research is needed to better include psychological assessment procedures and to focus on alternative data sources regarding floods and the connected precaution motivation of affected residents.},
  language  = {en}
}
@article{Yaka2020,
  author    = {Yaka, {\"O}zge},
  title     = {Justice as relationality},
  series = {Die Erde : journal of the Geographical Society of Berlin ; Zeitschrift der Gesellschaft f{\"u}r Erdkunde zu Berlin},
  volume    = {151},
  journal   = {Die Erde : journal of the Geographical Society of Berlin ; Zeitschrift der Gesellschaft f{\"u}r Erdkunde zu Berlin},
  number    = {2-3},
  publisher = {Gesellschaft f{\"u}r Erdkunde},
  address   = {Berlin},
  issn      = {0013-9998},
  doi       = {10.12854/erde-2020-481},
  pages     = {167 -- 180},
  year      = {2020},
  abstract  = {By introducing a notion of socio-ecological justice, this article aims to deepen the relationship between environment and justice, which has already been firmly established by environmental justice movements and scholarship. Based on extensive fieldwork on local community struggles against small-scale run-of river hydropower plants in Turkey, it expands the justice frame of environmental justice scholarship by going beyond the established conceptions of environmental justice as distribution - of environmental hazards and benefits, recognition and representation. Drawing on ethnographical fieldwork conducted in the East Black Sea region of Turkey, the article introduces the notion of socio-ecological justice to translate the relationality of the social and the ecological, of human life and non-human world, to the vocabulary of justice. It aims to extend the strictly humanist borders of social justice by maintaining that our intrinsic and intimate relations with the non-human world are an essential part of our well-being, and central to our needs to pursue a fair, decent life. It also seeks to contribute to the broader debate to facilitate a 'progressive composition' o f a common, more-than-human world.},
  language  = {en}
}
@misc{Yilmaz2019,
  author    = {Yilmaz, Zafer},
  title     = {The genesis of the 'Exceptional' Republic},
  series = {Postprints der Universit{\"a}t Potsdam Wirtschafts- und Sozialwissenschaftliche Reihe},
  journal   = {Postprints der Universit{\"a}t Potsdam Wirtschafts- und Sozialwissenschaftliche Reihe},
  number    = {113},
  issn      = {1867-5808},
  doi       = {10.25932/publishup-43416},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-434164},
  pages     = {22},
  year      = {2019},
  abstract  = {Almost half of the political life has been experienced under the state of emergency and state of siege policies in the Turkish Republic. In spite of such a striking number and continuity in the deployment of legal emergency powers, there are just a few legal and political studies examining the reasons for such permanency in governing practices. To fill this gap, this paper aims to discuss one of the most important sources of the 'permanent' political crisis in the country: the historical evolution of legal emergency power. In order to highlight how these policies have intensified the highly fragile citizenship regime by weakening the separation of power, repressing the use of political rights and increasing the discretionary power of both the executive and judiciary authori- ties, the paper sheds light on the emergence and production of a specific form of legality based on the idea of emergency and the principle of executive prerogative. In that context, it aims to provide a genealogical explanation of the evolution of the excep- tional form of the nation-state, which is based on the way political society, representation, and legitimacy have been instituted and accompanying failure of the ruling classes in building hegemony in the country.},
  language  = {en}
}
@article{ArboledaZapataAngelopoulosOverduinetal.2022,
  author    = {Arboleda-Zapata, Mauricio and Angelopoulos, Michael and Overduin, Pier Paul and Grosse, Guido and Jones, Benjamin M. and Tronicke, Jens},
  title     = {Exploring the capabilities of electrical resistivity tomography to study subsea permafrost},
  series = {The Cryosphere},
  volume    = {16},
  journal   = {The Cryosphere},
  publisher = {Copernicus},
  address   = {Katlenburg-Lindau},
  issn      = {1994-0424},
  doi       = {10.5194/tc-16-4423-2022},
  pages     = {4423 -- 4445},
  year      = {2022},
  abstract  = {Sea level rise and coastal erosion have inundated large areas of Arctic permafrost. Submergence by warm and saline waters increases the rate of inundated permafrost thaw compared to sub-aerial thawing on land. Studying the contact between the unfrozen and frozen sediments below the seabed, also known as the ice-bearing permafrost table (IBPT), provides valuable information to understand the evolution of sub-aquatic permafrost, which is key to improving and understanding coastal erosion prediction models and potential greenhouse gas emissions. In this study, we use data from 2D electrical resistivity tomography (ERT) collected in the nearshore coastal zone of two Arctic regions that differ in their environmental conditions (e.g., seawater depth and resistivity) to image and study the subsea permafrost. The inversion of 2D ERT data sets is commonly performed using deterministic approaches that favor smoothed solutions, which are typically interpreted using a user-specified resistivity threshold to identify the IBPT position. In contrast, to target the IBPT position directly during inversion, we use a layer-based model parameterization and a global optimization approach to invert our ERT data. This approach results in ensembles of layered 2D model solutions, which we use to identify the IBPT and estimate the resistivity of the unfrozen and frozen sediments, including estimates of uncertainties. Additionally, we globally invert 1D synthetic resistivity data and perform sensitivity analyses to study, in a simpler way, the correlations and influences of our model parameters. The set of methods provided in this study may help to further exploit ERT data collected in such permafrost environments as well as for the design of future field experiments.},
  language  = {en}
}
@article{VoitHeistermann2022,
  author    = {Voit, Paul and Heistermann, Maik},
  title     = {A new index to quantify the extremeness of precipitation across scales},
  series = {NHESS - Natural Hazards and Earth System Sciences},
  volume    = {22},
  journal   = {NHESS - Natural Hazards and Earth System Sciences},
  edition   = {8},
  publisher = {Copernicus},
  address   = {Katlenburg-Lindau},
  issn      = {1684-9981},
  doi       = {10.5194/nhess-22-2791-2022},
  pages     = {2791 -- 2805},
  year      = {2022},
  abstract  = {Quantifying the extremeness of heavy precipitation allows for the comparison of events. Conventional quantitative indices, however, typically neglect the spatial extent or the duration, while both are important to understand potential impacts. In 2014, the weather extremity index (WEI) was suggested to quantify the extremeness of an event and to identify the spatial and temporal scale at which the event was most extreme. However, the WEI does not account for the fact that one event can be extreme at various spatial and temporal scales. To better understand and detect the compound nature of precipitation events, we suggest complementing the original WEI with a "cross-scale weather extremity index" (xWEI), which integrates extremeness over relevant scales instead of determining its maximum. Based on a set of 101 extreme precipitation events in Germany, we outline and demonstrate the computation of both WEI and xWEI. We find that the choice of the index can lead to considerable differences in the assessment of past events but that the most extreme events are ranked consistently, independently of the index. Even then, the xWEI can reveal cross-scale properties which would otherwise remain hidden. This also applies to the disastrous event from July 2021, which clearly outranks all other analyzed events with regard to both WEI and xWEI. While demonstrating the added value of xWEI, we also identify various methodological challenges along the required computational workflow: these include the parameter estimation for the extreme value distributions, the definition of maximum spatial extent and temporal duration, and the weighting of extremeness at different scales. These challenges, however, also represent opportunities to adjust the retrieval of WEI and xWEI to specific user requirements and application scenarios.},
  language  = {en}
}
@misc{KellermannSchoenbergerThieken2016,
  author    = {Kellermann, Patric and Sch{\"o}nberger, Christine and Thieken, Annegret Henriette},
  title     = {Large-scale application of the flood damage model RAilway Infrastructure Loss (RAIL)},
  series = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  journal   = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  number    = {555},
  issn      = {1866-8372},
  doi       = {10.25932/publishup-41191},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-411915},
  pages     = {15},
  year      = {2016},
  abstract  = {Experience has shown that river floods can significantly hamper the reliability of railway networks and cause extensive structural damage and disruption. As a result, the national railway operator in Austria had to cope with financial losses of more than EUR 100 million due to flooding in recent years. Comprehensive information on potential flood risk hot spots as well as on expected flood damage in Austria is therefore needed for strategic flood risk management. In view of this, the flood damage model RAIL (RAilway Infrastructure Loss) was applied to estimate (1) the expected structural flood damage and (2) the resulting repair costs of railway infrastructure due to a 30-, 100- and 300-year flood in the Austrian Mur River catchment. The results were then used to calculate the expected annual damage of the railway subnetwork and subsequently analysed in terms of their sensitivity to key model assumptions. Additionally, the impact of risk aversion on the estimates was investigated, and the overall results were briefly discussed against the background of climate change and possibly resulting changes in flood risk. The findings indicate that the RAIL model is capable of supporting decision-making in risk management by providing comprehensive risk information on the catchment level. It is furthermore demonstrated that an increased risk aversion of the railway operator has a marked influence on flood damage estimates for the study area and, hence, should be considered with regard to the development of risk management strategies.},
  language  = {en}
}
@misc{MysiakSurminskiThiekenetal.2016,
  author    = {Mysiak, Jaroslav and Surminski, Swenja and Thieken, Annegret Henriette and Mechler, Reinhard and Aerts, Jeroen C. J. H.},
  title     = {Brief communication},
  series = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  journal   = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  number    = {524},
  issn      = {1866-8372},
  doi       = {10.25932/publishup-41014},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-410149},
  pages     = {5},
  year      = {2016},
  abstract  = {In March 2015, a new international blueprint for disaster risk reduction (DRR) was adopted in Sendai, Japan, at the end of the Third UN World Conference on Disaster Risk Reduction (WCDRR, 14-18 March 2015). We review and discuss the agreed commitments and targets, as well as the negotiation leading the Sendai Framework for DRR (SF-DRR) and discuss briefly its implication for the later UN-led negotiations on sustainable development goals and climate change.},
  language  = {en}
}
@misc{KellermannSchoebelKundelaetal.2015,
  author    = {Kellermann, Patric and Sch{\"o}bel, A. and Kundela, G. and Thieken, Annegret Henriette},
  title     = {Estimating flood damage to railway infrastructure},
  series = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  journal   = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  number    = {504},
  issn      = {1866-8372},
  doi       = {10.25932/publishup-40842},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-408429},
  pages     = {12},
  year      = {2015},
  abstract  = {Models for estimating flood losses to infrastructure are rare and their reliability is seldom investigated although infrastructure losses might contribute considerably to the overall flood losses. In this paper, an empirical modelling approach for estimating direct structural flood damage to railway infrastructure and associated financial losses is presented. Via a combination of event data, i.e. photo-documented damage on the Northern Railway in Lower Austria caused by the March River flood in 2006, and simulated flood characteristics, i.e. water levels, flow velocities and combinations thereof, the correlations between physical flood impact parameters and damage occurred to the railway track were investigated and subsequently rendered into a damage model. After calibrating the loss estimation using recorded repair costs of the Austrian Federal Railways, the model was applied to three synthetic scenarios with return periods of 30, 100 and 300 years of March River flooding. Finally, the model results are compared to depth-damage-curve-based approaches for the infrastructure sector obtained from the Rhine Atlas damage model and the Damage Scanner model. The results of this case study indicate a good performance of our two-stage model approach. However, due to a lack of independent event and damage data, the model could not yet be validated. Future research in natural risk should focus on the development of event and damage documentation procedures to overcome this significant hurdle in flood damage modelling.},
  language  = {en}
}
@misc{KienzlerPechKreibichetal.2014,
  author    = {Kienzler, Sarah and Pech, I. and Kreibich, Heidi and M{\"u}ller, M. and Thieken, Annegret Henriette},
  title     = {After the extreme flood in 2002},
  series = {Postprints der Universit{\"a}t Potsdam : Mathematisch Naturwissenschaftliche Reihe},
  journal   = {Postprints der Universit{\"a}t Potsdam : Mathematisch Naturwissenschaftliche Reihe},
  number    = {488},
  issn      = {1866-8372},
  doi       = {10.25932/publishup-40805},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-408056},
  pages     = {505 -- 526},
  year      = {2014},
  abstract  = {In the aftermath of the severe flooding in Central Europe in August 2002, a number of changes in flood policies were launched in Germany and other European countries, aiming at improved risk management. The question arises as to whether these changes have already had an impact on the residents' ability to cope with floods, and whether flood-affected private households are now better prepared than they were in 2002. Therefore, computer-aided telephone interviews with private households in Germany that suffered from property damage due to flooding in 2005, 2006, 2010 or 2011 were performed and analysed with respect to flood awareness, precaution, preparedness and recovery. The data were compared to a similar investigation conducted after the flood in 2002. After the flood in 2002, the level of private precautions taken increased considerably. One contributing factor is the fact that, in general, a larger proportion of people knew that they were at risk of flooding. The best level of precaution was found before the flood events in 2006 and 2011. The main reason for this might be that residents had more experience with flooding than residents affected in 2005 or 2010. Yet, overall, flood experience and knowledge did not necessarily result in building retrofitting or flood-proofing measures, which are considered as mitigating damages most effectively. Hence, investments still need to be stimulated in order to reduce future damage more efficiently. Early warning and emergency responses were substantially influenced by flood characteristics. In contrast to flood-affected people in 2006 or 2011, people affected by flooding in 2005 or 2010 had to deal with shorter lead times and therefore had less time to take emergency measures. Yet, the lower level of emergency measures taken also resulted from the people's lack of flood experience and insufficient knowledge of how to protect themselves. Overall, it was noticeable that these residents suffered from higher losses. Therefore, it is important to further improve early warning systems and communication channels, particularly in hilly areas with rapid-onset flooding.},
  language  = {en}
}
@misc{MarcHovius2015,
  author    = {Marc, Odin and Hovius, Niels},
  title     = {Amalgamation in landslide maps},
  series = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  journal   = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  number    = {485},
  issn      = {1866-8372},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-408075},
  pages     = {11},
  year      = {2015},
  abstract  = {Inventories of individually delineated landslides are a key to understanding landslide physics and mitigating their impact. They permit assessment of area-frequency distributions and landslide volumes, and testing of statistical correlations between landslides and physical parameters such as topographic gradient or seismic strong motion. Amalgamation, i.e. the mapping of several adjacent landslides as a single polygon, can lead to potentially severe distortion of the statistics of these inventories. This problem can be especially severe in data sets produced by automated mapping. We present five inventories of earthquake-induced landslides mapped with different materials and techniques and affected by varying degrees of amalgamation. Errors on the total landslide volume and power-law exponent of the area-frequency distribution, resulting from amalgamation, may be up to 200 and 50\%, respectively. We present an algorithm based on image and digital elevation model (DEM) analysis, for automatic identification of amalgamated polygons. On a set of about 2000 polygons larger than 1000 m2, tracing landslides triggered by the 1994 Northridge earthquake, the algorithm performs well, with only 2.7-3.6\% incorrectly amalgamated landslides missed and 3.9-4.8\% correct polygons incorrectly identified as amalgams. This algorithm can be used broadly to check landslide inventories and allow faster correction by automating the identification of amalgamation.},
  language  = {en}
}
@misc{FritzDeshpandeBouchardetal.2015,
  author    = {Fritz, Michael and Deshpande, B. N. and Bouchard, F. and H{\"o}gstr{\"o}m, E. and Malenfant-Lepage, J. and Morgenstern, Anne and Nieuwendam, A. and Oliva, M. and Paquette, M. and Rudy, A. C. A. and Siewert, M. B. and Sj{\"o}berg, Y. and Weege, Stefanie},
  title     = {Brief communication},
  series = {Postprints der Universit{\"a}t Potsdam : Mathematisch Naturwissenschaftliche Reihe},
  journal   = {Postprints der Universit{\"a}t Potsdam : Mathematisch Naturwissenschaftliche Reihe},
  number    = {490},
  issn      = {1866-8372},
  doi       = {10.25932/publishup-40809},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-408096},
  pages     = {6},
  year      = {2015},
  abstract  = {Accelerating climate change and increased economic and environmental interests in permafrost-affected regions have resulted in an acute need for more directed permafrost research. In June 2014, 88 early career researchers convened to identify future priorities for permafrost research. This multidisciplinary forum concluded that five research topics deserve greatest attention: permafrost landscape dynamics, permafrost thermal modeling, integration of traditional knowledge, spatial distribution of ground ice, and engineering issues. These topics underline the need for integrated research across a spectrum of permafrost-related domains and constitute a contribution to the Third International Conference on Arctic Research Planning (ICARP III).},
  language  = {en}
}
@misc{ClasonMairNienowetal.2015,
  author    = {Clason, Caroline C. and Mair, D. W. F. and Nienow, P. W. and Bartholomew, I. D. and Sole, Andrew and Palmer, Steven and Schwanghart, Wolfgang},
  title     = {Modelling the transfer of supraglacial meltwater to the bed of Leverett Glacier, Southwest Greenland},
  series = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  journal   = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  number    = {513},
  issn      = {1866-8372},
  doi       = {10.25932/publishup-40905},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-409053},
  pages     = {16},
  year      = {2015},
  abstract  = {Meltwater delivered to the bed of the Greenland Ice Sheet is a driver of variable ice-motion through changes in effective pressure and enhanced basal lubrication. Ice surface velocities have been shown to respond rapidly both to meltwater production at the surface and to drainage of supraglacial lakes, suggesting efficient transfer of meltwater from the supraglacial to subglacial hydrological systems. Although considerable effort is currently being directed towards improved modelling of the controlling surface and basal processes, modelling the temporal and spatial evolution of the transfer of melt to the bed has received less attention. Here we present the results of spatially distributed modelling for prediction of moulins and lake drainages on the Leverett Glacier in Southwest Greenland. The model is run for the 2009 and 2010 ablation seasons, and for future increased melt scenarios. The temporal pattern of modelled lake drainages are qualitatively comparable with those documented from analyses of repeat satellite imagery. The modelled timings and locations of delivery of meltwater to the bed also match well with observed temporal and spatial patterns of ice surface speed-ups. This is particularly true for the lower catchment (< 1000 m a.s.l.) where both the model and observations indicate that the development of moulins is the main mechanism for the transfer of surface meltwater to the bed. At higher elevations (e.g. 1250-1500 m a.s.l.) the development and drainage of supraglacial lakes becomes increasingly important. At these higher elevations, the delay between modelled melt generation and subsequent delivery of melt to the bed matches the observed delay between the peak air temperatures and subsequent velocity speed-ups, while the instantaneous transfer of melt to the bed in a control simulation does not. Although both moulins and lake drainages are predicted to increase in number for future warmer climate scenarios, the lake drainages play an increasingly important role in both expanding the area over which melt accesses the bed and in enabling a greater proportion of surface melt to reach the bed.},
  language  = {en}
}
@book{Haase2016,
  author    = {Haase, Marina},
  title     = {Berufsschullandschaften in l{\"a}ndlichen R{\"a}umen},
  number    = {60},
  publisher = {Universit{\"a}tsverlag Potsdam},
  address   = {Potsdam},
  isbn      = {978-3-86956-365-7},
  issn      = {0934-716X},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-89827},
  publisher      = {Universit{\"a}t Potsdam},
  pages     = {XXI, 462},
  year      = {2016},
  abstract  = {Seit Mitte der 2000er Jahre richtet sich angesichts der starken Sch{\"u}lerzahlenr{\"u}ckg{\"a}nge die wissenschaftliche und bildungspolitische Aufmerksamkeit wieder st{\"a}rker auf Fragen der Gestaltung beruflicher Bildung in l{\"a}ndlich-peripheren R{\"a}umen. Einerseits kn{\"u}pft sich an die demografische Entwicklung die Erwartung einer Entspannung der lange Zeit sehr prek{\"a}ren Ausbildungsplatzsituation in diesen R{\"a}umen. Andererseits ist offen, inwiefern mit den Anpassungsprozessen die Ausbildung neuer r{\"a}umlichen Disparit{\"a}ten verbunden ist, etwa durch die Schließung von Berufsschulen. Die Arbeit setzt sich mit der aktuellen Situation und dem Umgang mit Berufsschulen unter den folgenden Fragestellungen auseinander: Wie kann in Regionen mit d{\"u}nner Besiedlung auf der einen und einer schwierigen regional{\"o}konomischen Situation auf der anderen Seite diese komplexe Infrastruktur betrieben werden? Welche Steuerungsinstrumente kommen in dem anstehenden R{\"u}ckbauprozess zum Tragen und welche Rolle spielen demographische Entwicklungen, strukturelle Faktoren und Akteurshandeln? Ein besonderer Fokus liegt auf der theoretischen und empirischen Verkn{\"u}pfung von raumspezifischen Fragestellungen mit der Komplexit{\"a}t von Berufsschulen als ausdifferenzierte Institutionen zwischen Schulsystem und Wirtschaft. Untersucht wurde die Entwicklung des brandenburgischen Berufsschulnetzes ab den 1990er Jahren mit einer vertieften Fallstudie im Landkreis Uckermark. Entgegen der Annahme eines starken Einbruchs der Infrastrukturversorgung in Folge des Sch{\"u}lerzahlenr{\"u}ckganges wird gezeigt, dass sich die brandenburgische Berufsschullandschaft seit den 2000er Jahren durch eine relative Stabilit{\"a}t auszeichnet. Allerdings erfolgte eine berufsspezifische Ausd{\"u}nnung des Angebotes. Im Jahr 2013 fanden nur 41\% aller Auszubilden in ihrem jeweiligen Ausbildungsberuf ein relativ fl{\"a}chendeckendes Berufsschulnetz vor. Als Faktoren f{\"u}r gelingende Steuerungsprozesse (in l{\"a}ndlich-peripheren R{\"a}umen) zeigten sich das Subsidarit{\"a}tsprinzip, ein gemeinsam geteiltes Professionsverst{\"a}ndnis sowie die Orientierung auf einen gewissen r{\"a}umlichen Ausgleich. Erfolgreiche Interventionen gegen Konzentration basierten maßgeblich auf einem ausgepr{\"a}gten, fachlichen „Selbstbewusstsein" und Anspruch von Bildungsorganisationen. Demgegen{\"u}ber konnten unspezifische Bezugnahmen auf Peripherisierungen keine handlungswirksamen Strategien entfalten. Teilentwicklungen im Schulberufssystem sind durch die Expansion privater Berufsschulen in einen ausgepr{\"a}gten institutionellen Wandel eingebettet. Die Infrastrukturentwicklung f{\"u}hrte in diesem Segment zur Ausbildung eines spezifischen Marktes, der teilweise nur begrenzt einem klassischen Angebots-Nachfrage-Modell folgt und potentiell zu {\"U}berausbildung f{\"u}hrt. Die vorgefundenen Steuerungsformen sind angesichts von Ressourcenmangel, der sektoralen Zersplitterung sowie des Mangels an Institutionen f{\"u}r die Ausbildung von Regionen als Handlungsr{\"a}ume in der Berufsausbildung ambivalent. Der demografische Diskurs f{\"u}hrte (bisher) nicht zur Ausbildung von Steuerungsformen, welche die in der Infrastrukturgestaltung dominierenden, sektoralen Zust{\"a}ndigkeiten „{\"u}berwinden". Daher fungiert der Diskurs teilweise nur begrenzt als eine neue Orientierung f{\"u}r die Ausbildung von „peripheriespezifischen" Infrastrukturstrategien und alternativen Steuerungsmodellen. Er kann dann neue, {\"u}ber klassische Anpassungsprozesse hinausgehende, Optionen generieren, wenn er sich st{\"a}rker auf die Bedarfe der Akteure und Adressaten von Berufsbildung im l{\"a}ndlichen Raum bezieht und enger mit den Fachdiskursen verbindet.},
  language  = {de}
}
@article{BoessenkoolBruegerHeistermann2017,
  author    = {Boessenkool, Berry and Br{\"u}ger, Gerd and Heistermann, Maik},
  title     = {Effects of sample size on estimation of rainfall extremes at high temperatures},
  series = {Natural hazards and earth system sciences},
  volume    = {17},
  journal   = {Natural hazards and earth system sciences},
  number    = {9},
  publisher = {Copernicus},
  address   = {G{\"o}ttingen},
  issn      = {1561-8633},
  doi       = {10.5194/nhess-17-1623-2017},
  pages     = {1623 -- 1629},
  year      = {2017},
  abstract  = {High precipitation quantiles tend to rise with temperature, following the so-called Clausius-Clapeyron (CC) scaling. It is often reported that the CC-scaling relation breaks down and even reverts for very high temperatures. In our study, we investigate this reversal using observational climate data from 142 stations across Germany. One of the suggested meteorological explanations for the breakdown is limited moisture supply. Here we argue that, instead, it could simply originate from undersampling. As rainfall frequency generally decreases with higher temperatures, rainfall intensities as dictated by CC scaling are less likely to be recorded than for moderate temperatures. Empirical quantiles are conventionally estimated from order statistics via various forms of plotting position formulas. They have in common that their largest representable return period is given by the sample size. In small samples, high quantiles are underestimated accordingly. The small-sample effect is weaker, or disappears completely, when using parametric quantile estimates from a generalized Pareto distribution (GPD) fitted with L moments. For those, we obtain quantiles of rainfall intensities that continue to rise with temperature.},
  language  = {en}
}
@misc{BoessenkoolBruegerHeistermann2017,
  author    = {Boessenkool, Berry and Br{\"u}ger, Gerd and Heistermann, Maik},
  title     = {Effects of sample size on estimation of rainfall extremes at high temperatures},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-403897},
  pages     = {7},
  year      = {2017},
  abstract  = {High precipitation quantiles tend to rise with temperature, following the so-called Clausius-Clapeyron (CC) scaling. It is often reported that the CC-scaling relation breaks down and even reverts for very high temperatures. In our study, we investigate this reversal using observational climate data from 142 stations across Germany. One of the suggested meteorological explanations for the breakdown is limited moisture supply. Here we argue that, instead, it could simply originate from undersampling. As rainfall frequency generally decreases with higher temperatures, rainfall intensities as dictated by CC scaling are less likely to be recorded than for moderate temperatures. Empirical quantiles are conventionally estimated from order statistics via various forms of plotting position formulas. They have in common that their largest representable return period is given by the sample size. In small samples, high quantiles are underestimated accordingly. The small-sample effect is weaker, or disappears completely, when using parametric quantile estimates from a generalized Pareto distribution (GPD) fitted with L moments. For those, we obtain quantiles of rainfall intensities that continue to rise with temperature.},
  language  = {en}
}
@phdthesis{Maass2013,
  author    = {Maaß, Yvonne},
  title     = {Leuchtk{\"a}fer \& Orgelkoralle},
  series = {Epistemata : W{\"u}rzburger wissenschaftliche Schriften ; Reihe Literaturwissenschaft (852)},
  journal   = {Epistemata : W{\"u}rzburger wissenschaftliche Schriften ; Reihe Literaturwissenschaft (852)},
  number    = {852},
  publisher = {K{\"o}nigshausen \& Neumann},
  address   = {W{\"u}rzburg},
  isbn      = {978-3-8260-5833-2},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-399894},
  school      = {Universit{\"a}t Potsdam},
  pages     = {540},
  year      = {2013},
  abstract  = {Leuchtende K{\"a}fer und Medusen, phosphoreszierende Meereswellen oder zu Stein erstarrende Korallen faszinierten den bisher vornehmlich als Dichter portraitierten Naturforscher Adelbert von Chamisso (1781-1838). Intensiver noch als den zoologischen und geologischen Ph{\"a}nomenen, widmete er sich der Scientia amabilis - der liebenswerten Wissenschaft von den Pflanzen. Der vielseitig Talentierte verfasste seine Reise um die Welt (1836), die bis heute als eine der stilistisch anspruchvollsten und lesenswertesten Reisebeschreibungen gilt. Diese Studie widmet sich dezidiert den naturkundlichen Studien Chamissos im Kontext der dreij{\"a}hrigen Rurik-Expedition sowie den zugeh{\"o}rigen Textproduktionen. Mit einem umfassenden Text- und Materialkorpus werden literatur- und kulturwissenschaftliche sowie wissenschaftshistorische Fragestellungen an das Werk gelegt und ertragreich beantwortet. F{\"u}r die Reiseliteraturforschung wird bisher unbeachtetes Quellenmaterial ans Licht gebracht, g{\"a}ngige Thesen werden widerlegt, Quellen anderer Besatzungsmitglieder vergleichend betrachtet. Die Studie stellt den Naturforscher Chamisso in den Fokus, ohne den Dichter auszublenden, und widmet sich Fragen der Generierung, Vernetzung und Darstellung naturkundlichen Wissens in Texten, Illustrationen und Materialien zur Expedition - sie ist insgesamt f{\"u}r die Literatur- und Geschichtswissenschaft ebenso innovativ wie f{\"u}r die interdisziplin{\"a}re Geschichte des Wissens.},
  language  = {de}
}
@article{MarcHovius2015,
  author    = {Marc, Odin and Hovius, Niels},
  title     = {Amalgamation in landslide maps},
  series = {Natural hazards and earth system sciences},
  volume    = {15},
  journal   = {Natural hazards and earth system sciences},
  number    = {4},
  publisher = {Copernicus},
  address   = {G{\"o}ttingen},
  issn      = {1561-8633},
  doi       = {10.5194/nhess-15-723-2015},
  pages     = {723 -- 733},
  year      = {2015},
  abstract  = {Inventories of individually delineated landslides are a key to understanding landslide physics and mitigating their impact. They permit assessment of area-frequency distributions and landslide volumes, and testing of statistical correlations between landslides and physical parameters such as topographic gradient or seismic strong motion. Amalgamation, i.e. the mapping of several adjacent landslides as a single polygon, can lead to potentially severe distortion of the statistics of these inventories. This problem can be especially severe in data sets produced by automated mapping. We present five inventories of earthquake-induced landslides mapped with different materials and techniques and affected by varying degrees of amalgamation. Errors on the total landslide volume and power-law exponent of the area-frequency distribution, resulting from amalgamation, may be up to 200 and 50 \%, respectively. We present an algorithm based on image and digital elevation model (DEM) analysis, for automatic identification of amalgamated polygons. On a set of about 2000 polygons larger than 1000 m(2), tracing landslides triggered by the 1994 Northridge earthquake, the algorithm performs well, with only 2.7-3.6\% incorrectly amalgamated landslides missed and 3.9-4.8\% correct polygons incorrectly identified as amalgams. This algorithm can be used broadly to check landslide inventories and allow faster correction by automating the identification of amalgamation.},
  language  = {en}
}
@misc{CasadoLandaisPicardetal.2018,
  author    = {Casado, Mathieu and Landais, Amaelle and Picard, Ghislain and M{\"u}nch, Thomas and Laepple, Thomas and Stenni, Barbara and Dreossi, Giuliano and Ekaykin, Alexey and Arnaud, Laurent and Genthon, Christophe and Touzeau, Alexandra and Masson-Delmotte, Valerie and Jouzel, Jean},
  title     = {Archival processes of the water stable isotope signal in East Antarctic ice cores},
  series = {Postprints der Universit{\"a}t Potsdam Mathematisch-Naturwissenschaftliche Reihe},
  journal   = {Postprints der Universit{\"a}t Potsdam Mathematisch-Naturwissenschaftliche Reihe},
  number    = {716},
  issn      = {1866-8372},
  doi       = {10.25932/publishup-42705},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-427054},
  pages     = {22},
  year      = {2018},
  abstract  = {The oldest ice core records are obtained from the East Antarctic Plateau. Water isotopes are key proxies to reconstructing past climatic conditions over the ice sheet and at the evaporation source. The accuracy of climate reconstructions depends on knowledge of all processes affecting water vapour, precipitation and snow isotopic compositions. Fractionation processes are well understood and can be integrated in trajectory-based Rayleigh distillation and isotope-enabled climate models. However, a quantitative understanding of processes potentially altering snow isotopic composition after deposition is still missing. In low-accumulation sites, such as those found in East Antarctica, these poorly constrained processes are likely to play a significant role and limit the interpretability of an ice core's isotopic composition. By combining observations of isotopic composition in vapour, precipitation, surface snow and buried snow from Dome C, a deep ice core site on the East Antarctic Plateau, we found indications of a seasonal impact of metamorphism on the surface snow isotopic signal when compared to the initial precipitation. Particularly in summer, exchanges of water molecules between vapour and snow are driven by the diurnal sublimation-condensation cycles. Overall, we observe in between precipitation events modification of the surface snow isotopic composition. Using high-resolution water isotopic composition profiles from snow pits at five Antarctic sites with different accumulation rates, we identified common patterns which cannot be attributed to the seasonal variability of precipitation. These differences in the precipitation, surface snow and buried snow isotopic composition provide evidence of post-deposition processes affecting ice core records in low-accumulation areas.},
  language  = {en}
}
@book{AbelBerknerBiemeretal.2009,
  author    = {Abel, Thomas and Berkner, Christian and Biemer, Anna-Lena and Entz, Pamela and Hundt, Manuel and Kiener, Kerstin and Kiselgof, Natalia and K{\"o}hler, Anne and K{\"u}gler, Nancy and Lehmann, Anja and Liu, Na and Maier, Lilli and M{\"o}llmann, Nicole and Popig, Katharina and Reyes Tinoco, Bettina and Schmeißer, Alfred and Schr{\"o}ter, Katrin and Sturm, S{\"o}ren and Weichenhan, Marcel},
  title     = {Neuseeland 2007 : Bericht zur Exkursion des Instituts f{\"u}r Geographie der Universit{\"a}t Potsdam},
  editor    = {Berkner, Christian and Hundt, Manuel and Heller, Wilfried},
  isbn      = {978-3-940793-90-4},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-32533},
  publisher      = {Universit{\"a}t Potsdam},
  year      = {2009},
  abstract  = {Im Februar und M{\"a}rz 2007 wurde vom Geographischen Institut der Universit{\"a}t eine Exkursion nach Neuseeland durchgef{\"u}hrt. Der hier vorliegende Bericht bezieht sich auf diese Exkursion. Im ersten Teil wird durch 17 Protokolle der Exkursionsverlauf wiedergegeben. Im zweiten Teil befassen sich sechs Texte n{\"a}her mit je einem thematischen Aspekt der Exkursion. Autoren der Protokolle und der thematischen Texte sind die Teilnehmerinnen und Teilnehmer der Exkursion. Zum ersten Teil des Berichts - der Exkursionsverlauf Im ersten Teil dieses Berichtes wird der Verlauf der Exkursion Neuseeland 2007 des Geographischen Instituts der Universit{\"a}t Potsdam durch Tagesprotokolle dargestellt. Die Exkursion begann am 14. Februar 2007 in Auckland und endete am 4. M{\"a}rz 2007 in Christchurch. W{\"a}hrend dieser 19 Tage wurden verschiedene Orte auf der neuseel{\"a}ndischen Nord- und S{\"u}dinsel aufgesucht, wobei die Exkursionsgruppe verschiedene Aspekte der neuseel{\"a}ndischen Gesellschaft aus einer humangeographischen Perspektive studierte. Im Mittelpunkt standen die Themen historische und j{\"u}ngere Migration nach Neuseeland, Maori, Milchwirtschaft, Holzwirtschaft und Tourismus in Neuseeland. Die Tagesprotokolle machen deutlich, dass die Exkursion weniger in einer thematisch-systematischen Art und Weise durchgef{\"u}hrt wurde. Statt dessen erfolgte das Aufsuchen exemplarischer Orte, an denen Beobachtungen und dar{\"u}ber hinausgehende Erkundungen stattfanden. Die entsprechenden Aussagen sind in den Protokollen wiedergegeben, schwerpunktm{\"a}ßig wird dabei folgendes angesprochen: Der erste Exkursionstag, das war der 14. Februar 2007, wurde f{\"u}r den Besuch des Geographischen Institutes der Auckland University genutzt. Dort wurde zum Beispiel eine Diskussionsrunde mit den beiden Humangeographen Richard Le Heron und Gordon Winder veranstaltet. Auch die folgenden zwei Tage verbrachten die Exkursionsgruppe in Auckland, wobei sie sich im »Auckland Museum« {\"u}ber die neuseel{\"a}ndische Geschichte und insbesondere {\"u}ber die Kultur der Maori informierte. Mit einem Maori-Guide unternahmen die Teilnehmer eine Stadtf{\"u}hrung durch Auckland, wobei ebenfalls das Leben der Maori im Fokus stand. Außerdem besuchten sie eine private Einwanderungsagentur und f{\"u}hrten in Kleingruppen Expertengespr{\"a}che zum Thema »Migration und Integration in Neuseeland« durch. Am 17. Februar erkundeten die Exkursionsteilnehmer drei Orte in der n{\"a}heren Umgebung Aucklands. Zun{\"a}chst begaben sie sich zum Otara Market, einem Wochenmarkt der Pacific Islanders, der immer samstags in Otara abgehalten wird. Anschließend ging es weiter an die westliche K{\"u}ste, wo sie unter F{\"u}hrung einer Rangerin durch den Muriwai-Regionalpark wanderten. Auf der R{\"u}ckfahrt nach Auckland machten sie Halt in Soljan's Winzerei, wo der Betrieb vorgestellt wurde und Wein verkosten werden konnte. Am 18. Februar verließ die Exkursionsgruppe Auckland in Richtung Norden, um zum Ort Puhoi zu gelangen. Dort besch{\"a}ftigten sich die Teilnehmer mit den sogenannten Bohemians, die einst aus B{\"o}hmen nach Neuseeland auswanderten und deren Traditionen dort auch heute noch (zumindest teilweise) gepflegt werden. Am n{\"a}chsten Tag fuhren sie weiter nach Pahia, dem n{\"o}rdlichsten Aufenthaltsort w{\"a}hrend der Exkursion. Auf dem Weg dorthin machten sie einen Umweg {\"u}ber Matakohe, wo das Kauri-Museum und der Tane Mahuta, der gr{\"o}ßte Kauribaum Neuseelands, besichtigt wurden. Am 20. Februar stand vormittags die Besch{\"a}ftigung mit der Geschichte Neuseelands auf dem Tagesplan. Hierf{\"u}r besuchte die Exkursionsgruppe die Waitangi Treaty Grounds. Dort informierten sich die Teilnehmer {\"u}ber den Vertrag von Waitangi und dar{\"u}ber, welche Folgen dieser f{\"u}r das Leben der Maori hatte. Am Nachmittag stand das Thema Tourismus im Mittelpunkt. Die Exkursionsteilnehmer machten sich mit einem Teil des touristischen Angebots vertraut, indem sie eine Bootstour durch die Bay of Islands unternahmen. Am 21. Februar fuhr die Gruppe in die Hamilton-Region, wo sie sich auch die folgenden zwei Tage aufhielt. Auf dem Weg dorthin wurde ein Zwischenstopp in Kawakawa und an den Whangarei Falls eingelegt. In Hamilton war die Exkursionsgruppe Gast im Geographischen Institut der Waikato University und im Waikato Migrant Resource Centre. Außerdem stand das Thema Milchwirtschaft auf dem Programm. Hierf{\"u}r besichtigten die Teilnehmer das Unternehmen AmBreed, welches die Grundlage f{\"u}r die Aufzucht von Hochleistungsmilchk{\"u}hen bereitstellt - n{\"a}mlich das Bullensperma. Außerdem konnten sie sich {\"u}ber die Organisation und Probleme einer Milchfarm informieren. Dar{\"u}ber hinaus gestalteten in der Waikato-Region wohnende Nachfahren der b{\"o}hmischen Einwanderer ein Abendprogramm f{\"u}r die Exkursionsgruppe. Den 24. Februar verbrachten die Teilnehmer im Gebiet von Rotorua. Dort durchkreuzten sie das Thermal Wonderland, in dem heiße Quellen und Geysire sowie die dadurch geschaffenen Oberfl{\"a}chengegebenheiten studiert werden k{\"o}nnen. Die heißen Quellen werden hier auch zur Energiegewinnung herangezogen, wovon sich die Exkursionsteilnehmer bei einer Besichtigung der Geothermal Power Station of Warakei {\"u}berzeugen konnten. Auf der Fahrt zum Tongariro Nationalpark bewunderten sie die Huka Falls und machten Halt am Lake Taupo, dem gr{\"o}ßten See Neuseelands. Im Nationalpark unternahmen sie am 26. Februar eine Wanderung. Tags darauf fuhren sie weiter {\"u}ber Marton nach Wellington, der Hauptstadt Neuseelands. Dort war nachmittags sowie am 28. Februar Gelegenheit, die Stadt zu erkunden, unter anderem auf einer Stadtf{\"u}hrung mit Prof. Bredlich. Daneben erfuhr man bei einem Besuch des neuseel{\"a}ndischen Nationalmuseums Te Papa viel Wissenswertes {\"u}ber Gesellschaft und Geschichte Neuseelands. Am 1. M{\"a}rz {\"u}berquerten sie mit der F{\"a}hre die Cookstraße, um zur S{\"u}dinsel zu gelangen. Den Nachmittag dieses Tages verbrachte die Exkursionsgruppe in Upper Moutere, wo sie sich mit der Einwanderung Deutscher in der Region Nelson befasste Am Tag darauf fuhren die Teilnehmer zur Westk{\"u}ste und besch{\"a}ftigten sich mit den Landschaftsformen der S{\"u}dalpen und der K{\"u}ste sowie mit der Frage, welche wirtschaftliche Rolle diese Region einst spielte und welche sie heute einnimmt. Am 3. M{\"a}rz {\"u}berquerten sie die S{\"u}dalpen {\"u}ber den Athur's Pass und kamen am Nachmittag in Christchurch an. Am n{\"a}chsten Tag erlebten sie eine Besichtigungstour durch die gr{\"o}ßte Stadt der S{\"u}dinsel unter Leitung von Prof. Parson vom Institut f{\"u}r Geographie der Universit{\"a}t von Canterbury. Dabei standen insbesondere Fragen des st{\"a}dtischen Wandels im Mittelpunkt, welcher mit den {\"o}konomischen Reformen seit Ende der 80er Jahre des letzten Jahrhunderts einherging. Damit endete am 4. M{\"a}rz die Exkursion in Christchurch. Zum zweiten Teil des Berichts - die thematischen Texte Neben dem Gewinn eines ersten Eindrucks vor Ort bietet eine Exkursion als Form der Erkundung eines Landes durchaus auch die Gelegenheit, kritisch {\"u}ber gesellschaftliche Vorg{\"a}nge zu reflektieren. {\"U}ber solche Reflexionen geben die Darstellungen im zweiten Teil dieses Exkursionsberichtes Aufschluss. Das Spektrum der in den Texten aufgegriffenen Themen reicht dabei von physisch-geographischen Gegebenheiten, {\"u}ber Land- und Forstwirtschaft, die Maori bis zu bev{\"o}lkerungsgeographischen Fragestellungen zur Migration und Integration in Neuseeland. Dem zu Grunde liegt ein - in der Geographie lange verwurzeltes - holistisches Verst{\"a}ndnis der Disziplin. In den Berichten findet die zentrale Debatte in der Geographie um die Bedeutung und das Zusammenspiel von globalen, regionsunabh{\"a}ngigen und lokalen, regionsspezifischen Faktoren (»Glokalisierung«) an vielen Stellen ihren Ausdruck. Da w{\"a}hrend der Exkursion Einblick in verschiedenste Bereiche des Lebens in Neuseeland gewonnen werden konnten, ist es im thematischen zweiten Teil des Berichts vorrangiges Ziel, einen guten {\"U}berblick {\"u}ber Neuseeland und seine Bev{\"o}lkerung zu geben. Dabei {\"u}berwiegt ein beschreibender Charakter der Texte, gleichzeitig sollen aber auch zentrale Ver{\"a}nderungen und Herausforderungen f{\"u}r die neuseel{\"a}ndische Gesellschaft angesprochen, Erkl{\"a}rungsans{\"a}tze gegeben und L{\"o}sungsstrategien aufgewiesen werden. Im Einzelnen ist der thematische Teil folgendermaßen aufgebaut: Zu Beginn widmet sich Anja Lehmann den Maori und beleuchtet Geschichte, Kultur und heutige Situation der indigenen Bev{\"o}lkerung Neuseelands. Anschließend gehen Katharina Popig und Manuel Hundt in ihrem Text auf die fr{\"u}he europ{\"a}ische Einwanderung nach Neuseeland, insbesondere auf die Rolle der deutschen bzw. b{\"o}hmischen Einwanderer, ein. Im darauf folgenden Text zeigt Manuel Hundt die sich ver{\"a}ndernden Muster in der j{\"u}ngeren Migration auf und beleuchtet Fragen der Integration in Neuseeland, wobei insbesondere auf die Rolle der Pacific Islanders eingegangen wird. Dann folgt der Text von Lilli Maier. Sie besch{\"a}ftigt sich mit Fragen des Tourismus und schildert die Gestalt des Fremdenverkehrs und seine Bedeutung f{\"u}r die neuseel{\"a}ndische Wirtschaft. Natalia Kiselgof gibt einen {\"U}berblick sowohl {\"u}ber physisch-geographische Aspekte und den Naturraum Neuseelands als auch {\"u}ber die Struktur der neuseel{\"a}ndischen Landwirtschaft, bevor S{\"o}ren Sturm die Forstwirtschaft Neuseelands einer kritischen Analyse unterzieht.},
  language  = {de}
}
@misc{MarcMeunierHovius2017,
  author    = {Marc, Odin and Meunier, Patrick and Hovius, Niels},
  title     = {Prediction of the area affected by earthquake-induced landsliding based on seismological parameters},
  series = {Postprints der Universit{\"a}t Potsdam Mathematisch-Naturwissenschaftliche Reihe},
  journal   = {Postprints der Universit{\"a}t Potsdam Mathematisch-Naturwissenschaftliche Reihe},
  number    = {557},
  issn      = {1866-8372},
  doi       = {10.25932/publishup-41828},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-418285},
  pages     = {17},
  year      = {2017},
  abstract  = {We present an analytical, seismologically consistent expression for the surface area of the region within which most landslides triggered by an earthquake are located (landslide distribution area). This expression is based on scaling laws relating seismic moment, source depth, and focal mechanism with ground shaking and fault rupture length and assumes a globally constant threshold of acceleration for onset of systematic mass wasting. The seismological assumptions are identical to those recently used to propose a seismologically consistent expression for the total volume and area of landslides triggered by an earthquake. To test the accuracy of the model we gathered geophysical information and estimates of the landslide distribution area for 83 earthquakes. To reduce uncertainties and inconsistencies in the estimation of the landslide distribution area, we propose an objective definition based on the shortest distance from the seismic wave emission line containing 95\% of the total landslide area. Without any empirical calibration the model explains 56\% of the variance in our dataset, and predicts 35 to 49 out of 83 cases within a factor of 2, depending on how we account for uncertainties on the seismic source depth. For most cases with comprehensive landslide inventories we show that our prediction compares well with the smallest region around the fault containing 95\% of the total landslide area. Aspects ignored by the model that could explain the residuals include local variations of the threshold of acceleration and processes modulating the surface ground shaking, such as the distribution of seismic energy release on the fault plane, the dynamic stress drop, and rupture directivity. Nevertheless, its simplicity and first-order accuracy suggest that the model can yield plausible and useful estimates of the landslide distribution area in near-real time, with earthquake parameters issued by standard detection routines.},
  language  = {en}
}
@misc{KreibichMuellerSchroeteretal.2017,
  author    = {Kreibich, Heidi and M{\"u}ller, Meike and Schr{\"o}ter, Kai and Thieken, Annegret Henriette},
  title     = {New insights into flood warning reception and emergency response by affected parties},
  series = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  journal   = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  number    = {659},
  issn      = {1866-8372},
  doi       = {10.25932/publishup-41838},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-418381},
  pages     = {18},
  year      = {2017},
  abstract  = {Flood damage can be mitigated if the parties at risk are reached by flood warnings and if they know how to react appropriately. To gain more knowledge about warning reception and emergency response of private households and companies, surveys were undertaken after the August 2002 and the June 2013 floods in Germany. Despite pronounced regional differences, the results show a clear overall picture: in 2002, early warnings did not work well; e.g. many households (27 \%) and companies (45 \%) stated that they had not received any flood warnings. Additionally, the preparedness of private households and companies was low in 2002, mainly due to a lack of flood experience. After the 2002 flood, many initiatives were launched and investments undertaken to improve flood risk management, including early warnings and an emergency response in Germany. In 2013, only a small share of the affected households (5 \%) and companies (3 \%) were not reached by any warnings. Additionally, private households and companies were better prepared. For instance, the share of companies which have an emergency plan in place has increased from 10\% in 2002 to 34\% in 2013. However, there is still room for improvement, which needs to be triggered mainly by effective risk and emergency communication. The challenge is to continuously maintain and advance an integrated early warning and emergency response system even without the occurrence of extreme floods.},
  language  = {en}
}
@misc{MuenchKipfstuhlFreitagetal.2017,
  author    = {M{\"u}nch, Thomas and Kipfstuhl, Sepp and Freitag, Johannes and Meyer, Hanno and Laepple, Thomas},
  title     = {Constraints on post-depositional isotope modifications in East Antarctic firn from analysing temporal changes of isotope profiles},
  series = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  journal   = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  number    = {662},
  issn      = {1866-8372},
  doi       = {10.25932/publishup-41876},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-418763},
  pages     = {14},
  year      = {2017},
  abstract  = {The isotopic composition of water in ice sheets is extensively used to infer past climate changes. In low-accumulation regions their interpretation is, however, challenged by poorly constrained effects that may influence the initial isotope signal during and after deposition of the snow. This is reflected in snow-pit isotope data from Kohnen Station, Antarctica, which exhibit a seasonal cycle but also strong interannual variations that contradict local temperature observations. These inconsistencies persist even after averaging many profiles and are thus not explained by local stratigraphic noise. Previous studies have suggested that post-depositional processes may significantly influence the isotopic composition of East Antarctic firn. Here, we investigate the importance of post-depositional processes within the open-porous firn (greater than or similar to 10 cm depth) at Kohnen Station by separating spatial from temporal variability. To this end, we analyse 22 isotope profiles obtained from two snow trenches and examine the temporal isotope modifications by comparing the new data with published trench data extracted 2 years earlier. The initial isotope profiles undergo changes over time due to downward advection, firn diffusion and densification in magnitudes consistent with independent estimates. Beyond that, we find further modifications of the original isotope record to be unlikely or small in magnitude (<< 1 parts per thousand RMSD). These results show that the discrepancy between local temperatures and isotopes most likely originates from spatially coherent processes prior to or during deposition, such as precipitation intermittency or systematic isotope modifications acting on drifting or loose surface snow.},
  language  = {en}
}
@misc{Wilhelm2018,
  author    = {Wilhelm, Jan Lorenz},
  title     = {Atmosphere in the home stadium of Hertha BSC (German Bundesliga)},
  series = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  journal   = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  number    = {486},
  issn      = {1866-8372},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-420639},
  pages     = {21},
  year      = {2018},
  abstract  = {German football stadiums are well known for their atmosphere. It is often described as 'electrifying,' or 'cracking.' This article focuses on this atmosphere. Using a phenomenological approach, it explores how this emotionality can be understood and how geography matters while attending a match. Atmosphere in this context is conceptualized based on work by as a mood-charged space, neither object- nor subject-centered, but rather a medium of perception which cannot not exist. Based on qualitative research done in the home stadium of Hertha BSC in the German Bundesliga, this article shows that the bodily sensations experienced by spectators during a visit to the stadium are synchronized with events on the pitch and with the more or less imposing scenery. The analysis of in situ diaries reveals that spectators experience a comprehensive sense of collectivity. The study presents evidence that the occurrence of these bodily sensations is strongly connected with different aspects of spatiality. This includes sensations of constriction and expansion within the body, an awareness of one's location within the stadium, the influence of the immediate surroundings and cognitive here/there and inside/outside distinctions.},
  language  = {en}
}
@misc{LaudanRoezerSiegetal.2017,
  author    = {Laudan, Jonas and R{\"o}zer, Viktor and Sieg, Tobias and Vogel, Kristin and Thieken, Annegret Henriette},
  title     = {Damage assessment in Braunsbach 2016},
  series = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  journal   = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  number    = {653},
  issn      = {1866-8372},
  doi       = {10.25932/publishup-41839},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-418392},
  pages     = {17},
  year      = {2017},
  abstract  = {Flash floods are caused by intense rainfall events and represent an insufficiently understood phenomenon in Germany. As a result of higher precipitation intensities, flash floods might occur more frequently in future. In combination with changing land use patterns and urbanisation, damage mitigation, insurance and risk management in flash-flood-prone regions are becoming increasingly important. However, a better understanding of damage caused by flash floods requires ex post collection of relevant but yet sparsely available information for research. At the end of May 2016, very high and concentrated rainfall intensities led to severe flash floods in several southern German municipalities. The small town of Braunsbach stood as a prime example of the devastating potential of such events. Eight to ten days after the flash flood event, damage assessment and data collection were conducted in Braunsbach by investigating all affected buildings and their surroundings. To record and store the data on site, the open-source software bundle KoBoCollect was used as an efficient and easy way to gather information. Since the damage driving factors of flash floods are expected to differ from those of riverine flooding, a post-hoc data analysis was performed, aiming to identify the influence of flood processes and building attributes on damage grades, which reflect the extent of structural damage. Data analyses include the application of random forest, a random general linear model and multinomial logistic regression as well as the construction of a local impact map to reveal influences on the damage grades. Further, a Spearman's Rho correlation matrix was calculated. The results reveal that the damage driving factors of flash floods differ from those of riverine floods to a certain extent. The exposition of a building in flow direction shows an especially strong correlation with the damage grade and has a high predictive power within the constructed damage models. Additionally, the results suggest that building materials as well as various building aspects, such as the existence of a shop window and the surroundings, might have an effect on the resulting damage. To verify and confirm the outcomes as well as to support future mitigation strategies, risk management and planning, more comprehensive and systematic data collection is necessary.},
  language  = {en}
}
@misc{SpekkersRoezerThiekenetal.2017,
  author    = {Spekkers, Matthieu and R{\"o}zer, Viktor and Thieken, Annegret Henriette and ten Veldhuis, Marie-Claire and Kreibich, Heidi},
  title     = {A comparative survey of the impacts of extreme rainfall in two international case studies},
  series = {Postprints der Universit{\"a}t Potsdam : Mathematisch Naturwissenschaftliche Reihe},
  journal   = {Postprints der Universit{\"a}t Potsdam : Mathematisch Naturwissenschaftliche Reihe},
  number    = {640},
  issn      = {1866-8372},
  doi       = {10.25932/publishup-41843},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-418432},
  pages     = {1337 -- 1355},
  year      = {2017},
  abstract  = {Flooding is assessed as the most important natural hazard in Europe, causing thousands of deaths, affecting millions of people and accounting for large economic losses in the past decade. Little is known about the damage processes associated with extreme rainfall in cities, due to a lack of accurate, comparable and consistent damage data. The objective of this study is to investigate the impacts of extreme rainfall on residential buildings and how affected households coped with these impacts in terms of precautionary and emergency actions. Analyses are based on a unique dataset of damage characteristics and a wide range of potential damage explaining variables at the household level, collected through computer-aided telephone interviews (CATI) and an online survey. Exploratory data analyses based on a total of 859 completed questionnaires in the cities of Munster (Germany) and Amsterdam (the Netherlands) revealed that the uptake of emergency measures is related to characteristics of the hazardous event. In case of high water levels, more efforts are made to reduce damage, while emergency response that aims to prevent damage is less likely to be effective. The difference in magnitude of the events in Munster and Amsterdam, in terms of rainfall intensity and water depth, is probably also the most important cause for the differences between the cities in terms of the suffered financial losses. Factors that significantly contributed to damage in at least one of the case studies are water contamination, the presence of a basement in the building and people's awareness of the upcoming event. Moreover, this study confirms conclusions by previous studies that people's experience with damaging events positively correlates with precautionary behaviour. For improving future damage data acquisition, we recommend the inclusion of cell phones in a CATI survey to avoid biased sampling towards certain age groups.},
  language  = {en}
}
@misc{Altieri2018,
  author    = {Altieri, Riccardo},
  title     = {Paul Fr{\"o}lich, American exile, and communist discourse about the Russian revolution},
  series = {American Communist History},
  journal   = {American Communist History},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-413040},
  pages     = {13},
  year      = {2018},
  language  = {en}
}
@misc{EcksteinSchwarz2019,
  author    = {Eckstein, Lars and Schwarz, Anja},
  title     = {La carte de Tupaia, ma{\^i}tre d'astres et de navigation polyn{\´e}sienne},
  series = {Postprints der Universit{\"a}t Potsdam : Philosophische Reihe},
  journal   = {Postprints der Universit{\"a}t Potsdam : Philosophische Reihe},
  number    = {170},
  issn      = {1866-8380},
  doi       = {10.25932/publishup-44538},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-445381},
  pages     = {156},
  year      = {2019},
  abstract  = {La carte de Tupaia constitue l'un des art{\´e}facts les plus c{\´e}l{\`e}bres et les plus {\´e}nigmatiques {\`a} {\´e}merger des toutes premi{\`e}res rencontres entre Europ{\´e}ens et {\^i}liens du Pacifique. Elle a {\´e}t{\´e} {\´e}labor{\´e}e entre ao{\^u}t 1769 et f{\´e}vrier 1770 par Tupaia, pr{\^e}tre 'arioi, conseiller royal et ma{\^i}tre de navigation originaire de Ra'iātea, aux {\^I}les Sous-le-Vent de la Soci{\´e}t{\´e}. En collaboration avec divers membres d'{\´e}quipage de l'Endeavour de James Cook, en deux temps distincts de cartographie et trois {\´e}bauches. L'identit{\´e} de bien des {\^i}les qui y figurent et la logique de leur agencement demeuraient jusqu'{\`a} pr{\´e}sent des {\´e}nigmes. En se fiant en partie {\`a} des pi{\`e}ces d'archives rest{\´e}es ignor{\´e}es, nous proposons, dans ce long essai, une nouvelle compr{\´e}hension de sa logique cartographique, une reconstitution d{\´e}taill{\´e}e de sa gen{\`e}se et donc, pour la toute premi{\`e}re fois, une lecture exhaustive. La carte de Tupaia n'illustre pas seulement la magnitude et la ma{\^i}trise de la navigation polyn{\´e}sienne, elle r{\´e}alise aussi une remarquable synth{\`e}se repr{\´e}sentationnelle de deux syst{\`e}mes d'orientation tr{\`e}s diff{\´e}rents.},
  language  = {fr}
}
@book{KleinHitpass2006,
  author    = {Klein-Hitpaß, Katrin},
  title     = {Aufbau von Vertrauen in grenz{\"u}berschreitenden Netzwerken - das Beispiel der Grenzregion Sachsen, Niederschlesien und Nordb{\"o}hmen im EU-Projekt ENLARGE-NET},
  isbn      = {978-3-939469-02-5},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-11680},
  publisher      = {Universit{\"a}t Potsdam},
  year      = {2006},
  abstract  = {Enge Kooperationsformen basieren auf Vertrauen und dementsprechend wurde seine zentrale Rolle f{\"u}r die Funktionsf{\"a}higkeit von Netzwerken in den letzten Jahren auch zunehmend anerkannt. Diese Bedeutung von Vertrauen wird in grenz{\"u}berschreitenden Netzwerken noch potenziert, da neben den mangelnden formalen Sanktionsm{\"o}glichkeiten und der Ungleichzeitigkeit des Tauschs die Unsicherheiten resultierend aus der Ber{\"u}hrung unterschiedlicher Wirtschafts-, Kultur und Rechtsr{\"a}ume zunehmen, w{\"a}hrend gleichzeitig die Funktionsf{\"a}higkeit verschiedener Institutionen zur Reduzierung dieser Unsicherheiten abnimmt. Trotz dieser anerkannten Rolle, die Vertrauen in grenz{\"u}berschreitenden Kooperationen spielt, wird dem Aufbau von Vertrauen in grenz{\"u}berschreitenden Netzwerken und den M{\"o}glichkeiten einer gezielten Vertrauensf{\"o}rderung in der Literatur bisher nur wenig Beachtung geschenkt. Um diese Fragen n{\"a}her zu untersuchen, wurde eine empirische Studie zwischen den deutschen, polnischen und tschechischen Akteuren des von der Europ{\"a}ischen Union gef{\"o}rderten Projektes Enlarge-Net durchgef{\"u}hrt. Die Ergebnisse dieser Studie zeigen, dass gemeinsame Erfahrungen und wiederholte Interaktion, direkte Kommunikation, institutionellen Rahmenbedingungen, soziale, kulturelle und r{\"a}umliche Distanzen zwischen den Akteuren und Dritten Parteien einen entscheidenden Einfluss auf den Vertrauensaufbau zwischen den Akteuren eines grenz{\"u}berschreitenden Netzwerkes haben. Um den Prozess des Vertrauensaufbaus zu f{\"o}rdern, sollte ein Vertrauensmanagement eingef{\"u}hrt werden, das unter anderem auf die Schaffung formaler und informeller Austauschplattformen abzielt, die Qualit{\"a}t der Kommunikation verbessert und Regeln der Kooperation institutionalisiert. Doch bleibt zu beachten, dass es sich bei dem Aufbau von Vertrauen um einen langsamen und sich sukzessive verst{\"a}rkenden Prozess handelt, der extrem empfindlich gegen{\"u}ber St{\"o}rungen ist, die den gesamten Prozess mit einem Schlag zum Erliegen bringen k{\"o}nnen.},
  subject      = {Grenz{\"u}berschreitende Kooperation},
  language  = {de}
}
@book{Etz2007,
  author    = {Etz, Swen},
  title     = {M{\"o}glichkeiten und Grenzen der Verbesserung des nachhaltigen Kanalunterhalts durch b{\"a}uerliche Selbstorganisation : das Beispiel der OERT im Bew{\"a}sserungsgebiet des Office du Niger/Mali},
  publisher = {Universit{\"a}tsverlag Potsdam},
  address   = {Potsdam},
  isbn      = {978-3-939469-55-1},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-12722},
  publisher      = {Universit{\"a}t Potsdam},
  pages     = {110},
  year      = {2007},
  abstract  = {Wasser erweist sich immer mehr als eine der kostbarsten und zuk{\"u}nftig knappsten Ressourcen auf unserem Planeten. Effizienter Umgang mit dieser Ressource ist deshalb auch in Großbew{\"a}sserungsgebieten weltweit zu einer obersten Priorit{\"a}t geworden. Dabei spielt verst{\"a}rkte Mitbestimmung und Partizipation der lokalen Bev{\"o}lkerung erwiesenerweise eine wichtige Rolle. In einer viermonatigen Feldstudie wurden im Bew{\"a}sserungsgebiet Office du Niger, Mali, in zwei D{\"o}rfern die {\"o}rtlichen „Bauernorganisationen zum Unterhalt des terti{\"a}ren Bew{\"a}sserungssystems" evaluiert. Welchen Nutzen und welche Erfolge k{\"o}nnen sie vorweisen? Wo liegen Probleme in Umsetzung und Akzeptanz der lokalen Organisationsstrukturen? Die vorliegende Arbeit stellt umfassend die M{\"o}glichkeiten und Grenzen b{\"a}uerlicher Selbstorganisation zum nachhaltigen Kanalunterhalt in der Forschungsregion dar, ergr{\"u}ndet die vorliegenden Problemfaktoren und zeigt Schritte zur {\"U}berwindung derselbigen auf.},
  language  = {de}
}
@book{OPUS4-4138,
  title     = {Von der Analyse nat{\"u}rlicher Prozesse zur gesellschaftlichen Praxis},
  editor    = {Felgentreff, Carsten and Glade, Thomas},
  publisher = {Universit{\"a}tsverlag Potsdam},
  address   = {Potsdam},
  isbn      = {978-3-937786-24-7},
  issn      = {0934-716X},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-43410},
  publisher      = {Universit{\"a}t Potsdam},
  pages     = {175},
  year      = {2004},
  abstract  = {Bem{\"u}hungen um eine katastrophenresistentere Gesellschaft bed{\"u}rfen nicht nur der Analyse potentiell bedrohlicher Prozesse wie Hochwasser, Hangrutschungen usw. Die solcherart gewonnenen Risikoeinsch{\"a}tzungen m{\"u}ssen ad{\"a}quat kommuniziert werden, wenn das Risikobewusstsein der Bev{\"o}lkerung gest{\"a}rkt und absehbare Sch{\"a}den minimiert werden sollen. In sieben Beitr{\"a}gen behandeln Autoren verschiedener Disziplinen Fragen der Umsetzung des Wissens {\"u}ber die Natur in die gesellschaftliche Praxis.},
  language  = {de}
}
@book{Knippschild2001,
  author    = {Knippschild, Robert},
  title     = {Die EU-Strukturpolitik an Oder und Neiße : Chancen einer nachhaltigen Regionalentwicklung in der Grenzregion mit dem EU-Beitrittskandidaten Polen},
  issn      = {1868-2499},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-45526},
  publisher      = {Universit{\"a}t Potsdam},
  year      = {2001},
  abstract  = {Die vorliegende Studie entstand im Rahmen einer Diplomarbeit an der Fakult{\"a}t Raumplanung der Universit{\"a}t Dortmund. Das rege Interesse an der Fragestellung sowie die positive Resonanz auf die Arbeit waren Grundlage f{\"u}r eine Ver{\"o}ffentlichung, die die erarbeiteten Ergebnisse interessierten Akteuren in Fachkreisen sowie vor Ort zug{\"a}nglich machen soll. Die derzeit gef{\"u}hrten Diskussionen um Auswirkungen der EU-Osterweiterung auf die Regionen entlang der EU-Außengrenze verleihen der angeschnittenen Thematik weiterhin Aktualit{\"a}t. Des Weiteren bietet die im Moment verz{\"o}gert anlaufende F{\"o}rderperiode der EU-Strukturpolitik 2000-2006 Anlass - die bevorstehenden „Calls" zu Projektvorschl{\"a}gen im Rahmen der Programme Interreg III und Phare CBC II stehen bevor - den Blick zur{\"u}ck zu richten und die Wirkung der Projekte zur grenz{\"u}berschreitenden Zusammenarbeit in der abgelaufenen F{\"o}rderperiode zu diskutieren. Hierzu m{\"o}chte die vorliegende Arbeit einen Beitrag leisten.},
  language  = {de}
}
@book{Felgentreff1995,
  author    = {Felgentreff, Carsten},
  title     = {R{\"a}umliche Bev{\"o}lkerungsmobilit{\"a}t in Fidschi : eine exemplarische Untersuchung der Dorfgemeinschaft von Naikeleyaga (Kabara Island, Lau-Province)},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-45487},
  publisher      = {Universit{\"a}t Potsdam},
  year      = {1995},
  abstract  = {Inhalt: 1 Einleitung 1.1 Fragestellung und Ziele der Arbeit 1.2 Methodische Vor{\"u}berlegungen 1.3 Auswahl der Untersuchungsorte 1.4 Forschungspraxis und forschungspraktische Probleme 2 Der Untersuchungsraum 2.1 Fidschi - ein einf{\"u}hren der {\"U}berblick 2.2 Das Dorf Naikeleyaga auf der Insel Kabara 2.3 Suva 2.4 Die lebenspraktische Dimension der r{\"a}umlichen Ungleichheiten - ein zusammenfassender {\"U}berblick 3 Die Bev{\"o}lkerungsentwicklung des Dorfes Naikeleyaga vor dem Hintergrund der r{\"a}umlichen Mobilit{\"a}t seiner Gemeinschaft 3.1 Einleitung 3.2 Bev{\"o}lkerungsstand des Dorfes Naikeleyaga (1993) 3.3 Bev{\"o}lkerungsdynamik des Dorfes Naikeleyaga 3.4 Wanderungserfahrungen der 1993 anwesenden Bev{\"o}lkerung 3.5 Die multilokale Dorfgemeinschaft: Zur r{\"a}umlichen Verteilung der registrierten Angeh{\"o}rigen der yavusa 3.6 Naikeleyaganer in Suva 3.7 Zusammenfassung 4 Analyse individueller Wanderungsbiographien 4.1 Einleitung 4.2 Die Untersuchungsgruppe 4.3 Die bisherigen Aufenthaltsorte der Befragten 4.4 Muster der r{\"a}umlichen Mobilit{\"a}t 4.5 Zur H{\"a}ufigkeit und Frequenz der individuellen Bewegungen 4.6 Zur Dauer der einzelnen Bewegungen 4.7 Zirkul{\"a}re Bewegungen und Etappenwanderungen 4.8 Zusammenfassung 5 Wanderungsentschl{\"u}sse im Kontext: Lebensgeschichten ausgew{\"a}hlter Mitglieder der Dorfgemeinschaft 5.1 Einf{\"u}hrung 5.2 Fallbeispiele 5.3 Schlußfolgerungen 6 Zusammenfassung und Ausblick 6.1 Res{\"u}mee 6.2 Reflektion 6.3 Ausblick},
  language  = {de}
}
@book{BarschSaupeBierwagenetal.1994,
  author    = {Barsch, Heiner and Saupe, Gabriele and Bierwagen, Charlotte and Ebert, Beatrix and Goltz, Elke and Halfmann, Jochen and Itzerott, Sibylle and Kaden, Klaus and Knothe, Dieter and Kr{\"u}ger, Wolfgang and Syrbe, Ralf-Uwe and Steinhardt, Uta and Thieme, Siegfried and Ziener, Karen},
  title     = {Bewertung und Gestaltung der naturnahen Landschaft in Schutzgebieten, Erholungs- und Freizeitgebieten. Anhang},
  editor    = {Barsch, Heiner and Saupe, Gabriele},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-52928},
  publisher      = {Universit{\"a}t Potsdam},
  year      = {1994},
  language  = {de}
}
@misc{Ette2017,
  author    = {Ette, Ottmar},
  title     = {Khal Torabully},
  series = {Journal of the African Literature Association},
  journal   = {Journal of the African Literature Association},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-412609},
  pages     = {9},
  year      = {2017},
  abstract  = {Khal Torabully creates poetry and a poetics for those forgotten by history, a theorem and theory which construct a tangible and sensual landscape, allowing for an empathetically shared experience and expressing the dramatic climax of the third phase of accelerated globalization: a project that would be unthinkable without the cultural theory we now have at our disposal in the present surge of globalization. In his poetic and theoretical texts, he has paid a literary tribute to the Coolies, usually from India, but also China and many other countries. Given Torabully's Mauritian roots, but also the worldwide migration of the Coolies themselves, the world of Coolitude is culturally and linguistically extremely diverse, making the act of translation very relevant and giving it multiple meanings. Literature brings these forgotten lives back to life and allows us to share this experience thanks to its aesthetic force. It traces the movements, which sketch trajectories functioning to this day as palimpsest-like vectors of our own paths and trajectories. The author of Chair Corail, Fragments Coolies breaks the chain of mutual exclusions, replacing it with a type of writing belonging to a wider array of expressive modes which in diasporic situations unleash polylogical and archipelagic imaginaries.},
  language  = {en}
}
@misc{BrendelMatznerMenzel2021,
  author    = {Brendel, Nina and Matzner, Nils and Menzel, Max-Peter},
  title     = {Geographisches Gezwitscher - Analyse von Twitter-Daten als Methode im GW-Unterricht},
  series = {Zweitver{\"o}ffentlichungen der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  journal   = {Zweitver{\"o}ffentlichungen der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  publisher = {Universit{\"a}tsverlag Potsdam},
  address   = {Potsdam},
  issn      = {1866-8372},
  doi       = {10.25932/publishup-55061},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-550614},
  pages     = {72 -- 85},
  year      = {2021},
  abstract  = {Soziale Medien sind ein wesentlicher Bestandteil des Alltags von Sch{\"u}ler*innen und gleichzeitig zunehmend wichtig in Wirtschaft, Politik und Wissenschaft. Am Beispiel von Twitter zeigt dieser Beitrag, dass soziale Medien im Unterricht auch f{\"u}r die Beantwortung geographischer Fragestellungen verwendet werden k{\"o}nnen. Hierf{\"u}r eignen sich Twitter-Daten aufgrund ihrer Georeferenzierung und weiterer interessanter Inhalte besonders. Der Beitrag gibt einen {\"U}berblick {\"u}ber die Verwendung von Twitter f{\"u}r sozialwissenschaftliche und humangeographische Fragestellungen und reflektiert die Nutzung von Twitter im Unterricht. F{\"u}r die Unterrichtspraxis werden Beispiele zu den Themen Braunkohle, Flutereignisse und Raumwahrnehmungen sowie Anleitungen zur Auswertung, Anwendung und Reflexion von Twitter-Analysen vorgestellt.},
  language  = {de}
}
@article{BrendelMatznerMenzel2021,
  author    = {Brendel, Nina and Matzner, Nils and Menzel, Max-Peter},
  title     = {Geographisches Gezwitscher - Analyse von Twitter-Daten als Methode im GW-Unterricht},
  series = {GW-Unterricht},
  journal   = {GW-Unterricht},
  publisher = {Verlag der {\"O}sterreichischen Akademie der Wissenschaften},
  address   = {Wien},
  issn      = {2414-4169},
  doi       = {10.1553/gw-unterricht164s72},
  pages     = {72 -- 85},
  year      = {2021},
  abstract  = {Soziale Medien sind ein wesentlicher Bestandteil des Alltags von Sch{\"u}ler*innen und gleichzeitig zunehmend wichtig in Wirtschaft, Politik und Wissenschaft. Am Beispiel von Twitter zeigt dieser Beitrag, dass soziale Medien im Unterricht auch f{\"u}r die Beantwortung geographischer Fragestellungen verwendet werden k{\"o}nnen. Hierf{\"u}r eignen sich Twitter-Daten aufgrund ihrer Georeferenzierung und weiterer interessanter Inhalte besonders. Der Beitrag gibt einen {\"U}berblick {\"u}ber die Verwendung von Twitter f{\"u}r sozialwissenschaftliche und humangeographische Fragestellungen und reflektiert die Nutzung von Twitter im Unterricht. F{\"u}r die Unterrichtspraxis werden Beispiele zu den Themen Braunkohle, Flutereignisse und Raumwahrnehmungen sowie Anleitungen zur Auswertung, Anwendung und Reflexion von Twitter-Analysen vorgestellt.},
  language  = {de}
}
@misc{ArboledaZapataAngelopoulosOverduinetal.2022,
  author    = {Arboleda-Zapata, Mauricio and Angelopoulos, Michael and Overduin, Pier Paul and Grosse, Guido and Jones, Benjamin M. and Tronicke, Jens},
  title     = {Exploring the capabilities of electrical resistivity tomography to study subsea permafrost},
  series = {Zweitver{\"o}ffentlichungen der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  journal   = {Zweitver{\"o}ffentlichungen der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  number    = {1285},
  issn      = {1866-8372},
  doi       = {10.25932/publishup-57123},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-571234},
  pages     = {4423 -- 4445},
  year      = {2022},
  abstract  = {Sea level rise and coastal erosion have inundated large areas of Arctic permafrost. Submergence by warm and saline waters increases the rate of inundated permafrost thaw compared to sub-aerial thawing on land. Studying the contact between the unfrozen and frozen sediments below the seabed, also known as the ice-bearing permafrost table (IBPT), provides valuable information to understand the evolution of sub-aquatic permafrost, which is key to improving and understanding coastal erosion prediction models and potential greenhouse gas emissions. In this study, we use data from 2D electrical resistivity tomography (ERT) collected in the nearshore coastal zone of two Arctic regions that differ in their environmental conditions (e.g., seawater depth and resistivity) to image and study the subsea permafrost. The inversion of 2D ERT data sets is commonly performed using deterministic approaches that favor smoothed solutions, which are typically interpreted using a user-specified resistivity threshold to identify the IBPT position. In contrast, to target the IBPT position directly during inversion, we use a layer-based model parameterization and a global optimization approach to invert our ERT data. This approach results in ensembles of layered 2D model solutions, which we use to identify the IBPT and estimate the resistivity of the unfrozen and frozen sediments, including estimates of uncertainties. Additionally, we globally invert 1D synthetic resistivity data and perform sensitivity analyses to study, in a simpler way, the correlations and influences of our model parameters. The set of methods provided in this study may help to further exploit ERT data collected in such permafrost environments as well as for the design of future field experiments.},
  language  = {en}
}
@misc{VoitHeistermann2022,
  author    = {Voit, Paul and Heistermann, Maik},
  title     = {A new index to quantify the extremeness of precipitation across scales},
  series = {Zweitver{\"o}ffentlichungen der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  journal   = {Zweitver{\"o}ffentlichungen der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  number    = {1283},
  issn      = {1866-8372},
  doi       = {10.25932/publishup-57089},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-570893},
  pages     = {2791 -- 2805},
  year      = {2022},
  abstract  = {Quantifying the extremeness of heavy precipitation allows for the comparison of events. Conventional quantitative indices, however, typically neglect the spatial extent or the duration, while both are important to understand potential impacts. In 2014, the weather extremity index (WEI) was suggested to quantify the extremeness of an event and to identify the spatial and temporal scale at which the event was most extreme. However, the WEI does not account for the fact that one event can be extreme at various spatial and temporal scales. To better understand and detect the compound nature of precipitation events, we suggest complementing the original WEI with a "cross-scale weather extremity index" (xWEI), which integrates extremeness over relevant scales instead of determining its maximum. Based on a set of 101 extreme precipitation events in Germany, we outline and demonstrate the computation of both WEI and xWEI. We find that the choice of the index can lead to considerable differences in the assessment of past events but that the most extreme events are ranked consistently, independently of the index. Even then, the xWEI can reveal cross-scale properties which would otherwise remain hidden. This also applies to the disastrous event from July 2021, which clearly outranks all other analyzed events with regard to both WEI and xWEI. While demonstrating the added value of xWEI, we also identify various methodological challenges along the required computational workflow: these include the parameter estimation for the extreme value distributions, the definition of maximum spatial extent and temporal duration, and the weighting of extremeness at different scales. These challenges, however, also represent opportunities to adjust the retrieval of WEI and xWEI to specific user requirements and application scenarios.},
  language  = {en}
}
@article{DeLuciaKuehn2021,
  author    = {De Lucia, Marco and K{\"u}hn, Michael},
  title     = {DecTree v1.0-chemistry speedup in reactive transport simulations},
  series = {Geoscientific model development : an interactive open access journal of the European Geosciences Union},
  volume    = {14},
  journal   = {Geoscientific model development : an interactive open access journal of the European Geosciences Union},
  number    = {7},
  publisher = {Copernicus},
  address   = {G{\"o}ttingen},
  issn      = {1991-959X},
  doi       = {10.5194/gmd-14-4713-2021},
  pages     = {4713 -- 4730},
  year      = {2021},
  abstract  = {The computational costs associated with coupled reactive transport simulations are mostly due to the chemical subsystem: replacing it with a pre-trained statistical surrogate is a promising strategy to achieve decisive speedups at the price of small accuracy losses and thus to extend the scale of problems which can be handled. We introduce a hierarchical coupling scheme in which "full-physics" equation-based geochemical simulations are partially replaced by surrogates. Errors in mass balance resulting from multivariate surrogate predictions effectively assess the accuracy of multivariate regressions at runtime: inaccurate surrogate predictions are rejected and the more expensive equation-based simulations are run instead. Gradient boosting regressors such as XGBoost, not requiring data standardization and being able to handle Tweedie distributions, proved to be a suitable emulator. Finally, we devise a surrogate approach based on geochemical knowledge, which overcomes the issue of robustness when encountering previously unseen data and which can serve as a basis for further development of hybrid physics-AI modelling.},
  language  = {en}
}
@article{KreuzerReeseHuiskampetal.2021,
  author    = {Kreuzer, Moritz and Reese, Ronja and Huiskamp, Willem Nicholas and Petri, Stefan and Albrecht, Torsten and Feulner, Georg and Winkelmann, Ricarda},
  title     = {Coupling framework (1.0) for the PISM (1.1.4) ice sheet model and the MOMS (5.1.0) ocean model via the PICO ice shelf cavity model in an Antarctic domain},
  series = {Geoscientific model development : an interactive open access journal of the European Geosciences Union},
  volume    = {14},
  journal   = {Geoscientific model development : an interactive open access journal of the European Geosciences Union},
  number    = {6},
  publisher = {Copernicus},
  address   = {G{\"o}ttingen},
  issn      = {1991-959X},
  doi       = {10.5194/gmd-14-3697-2021},
  pages     = {3697 -- 3714},
  year      = {2021},
  abstract  = {The past and future evolution of the Antarctic Ice Sheet is largely controlled by interactions between the ocean and floating ice shelves. To investigate these interactions, coupled ocean and ice sheet model configurations are required. Previous modelling studies have mostly relied on high-resolution configurations, limiting these studies to individual glaciers or regions over short timescales of decades to a few centuries. We present a framework to couple the dynamic ice sheet model PISM (Parallel Ice Sheet Model) with the global ocean general circulation model MOM5 (Modular Ocean Model) via the ice shelf cavity model PICO (Pots-dam Ice-shelf Cavity mOdel). As ice shelf cavities are not resolved by MOM5 but are parameterized with the PICO box model, the framework allows the ice sheet and ocean components to be run at resolutions of 16 km and 3 degrees respectively. This approach makes the coupled configuration a useful tool for the analysis of interactions between the Antarctic Ice Sheet and the global ocean over time spans of the order of centuries to millennia. In this study, we describe the technical implementation of this coupling framework: sub-shelf melting in the ice sheet component is calculated by PICO from modelled ocean temperatures and salinities at the depth of the continental shelf, and, vice versa, the resulting mass and energy fluxes from melting at the ice-ocean interface are transferred to the ocean component. Mass and energy fluxes are shown to be conserved to machine precision across the considered component domains. The implementation is computationally efficient as it introduces only minimal overhead. Furthermore, the coupled model is evaluated in a 4000 year simulation under constant present-day climate forcing and is found to be stable with respect to the ocean and ice sheet spin-up states. The framework deals with heterogeneous spatial grid geometries, varying grid resolutions, and timescales between the ice and ocean component in a generic way; thus, it can be adopted to a wide range of model set-ups.},
  language  = {en}
}
@book{OPUS4-4579,
  title     = {Regionale Bedeutung von Hochschulen und Forschungseinrichtungen : das Beispiel Potsdam},
  editor    = {Rolfes, Manfred and R{\"o}pcke, Julian and Rozanski, Kathleen},
  publisher = {Universit{\"a}tsverlag Potsdam},
  address   = {Potsdam},
  isbn      = {978-3-86956-082-3},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-45910},
  publisher      = {Universit{\"a}t Potsdam},
  pages     = {71},
  year      = {2010},
  abstract  = {Der vorliegende Band „Regionale Bedeutung von Hochschulen und Forschungseinrichtungen - Das Beispiel Potsdam." gibt einen Einblick in die Ergebnisse eines Studienprojekts am Institut f{\"u}r Geographie der Universit{\"a}t Potsdam. Das Studienprojekt war eingebettet in das URBACT II Projekt RUnUP (Role of Universities in Urban Poles). Bei den unterschiedlichen Beitr{\"a}gen stehen die vielf{\"a}ltigen Beziehungen zwischen Stadt/Politik, Wirtschaft und Wissenschaft in der Region Potsdam im Mittelpunkt. Den theoretischen Bezug bildet dabei das Triple Helix Modell.},
  language  = {mul}
}
@book{RolfesSteinbrinkUhl2009,
  author    = {Rolfes, Manfred and Steinbrink, Malte and Uhl, Christina},
  title     = {Townships as attraction : an empirical study of township tourism in Cape Town},
  publisher = {Universit{\"a}tsverlag Potsdam},
  address   = {Potsdam},
  isbn      = {978-3-940793-79-9},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-28947},
  publisher      = {Universit{\"a}t Potsdam},
  pages     = {60},
  year      = {2009},
  abstract  = {Since the end of the Apartheid international tourism in South Africa has increasingly gained importance for the national economy. The centre of this PKS issue's attention is a particular form of tourism: Township tourism, i.e. guided tours to the residential areas of the black population. About 300,000 tourists per year visit the townships of Cape Town. The tours are also called Cultural, Social, or Reality Tours. The different aspects of township tourism in Cape Town were subject of a geographic field study, which was undertaken during a student research project of Potsdam University in 2007. The text at hand presents the empirical results of the field study, and demonstrates how townships are constructed as spaces of tourism.},
  language  = {en}
}
@misc{SamprognaMohorThiekenKorup2021,
  author    = {Samprogna Mohor, Guilherme and Thieken, Annegret Henriette and Korup, Oliver},
  title     = {Residential flood loss estimated from Bayesian multilevel models},
  series = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  journal   = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  issn      = {1866-8372},
  doi       = {10.25932/publishup-51774},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-517743},
  pages     = {1599 -- 1614},
  year      = {2021},
  abstract  = {Models for the predictions of monetary losses from floods mainly blend data deemed to represent a single flood type and region. Moreover, these approaches largely ignore indicators of preparedness and how predictors may vary between regions and events, challenging the transferability of flood loss models. We use a flood loss database of 1812 German flood-affected households to explore how Bayesian multilevel models can estimate normalised flood damage stratified by event, region, or flood process type. Multilevel models acknowledge natural groups in the data and allow each group to learn from others. We obtain posterior estimates that differ between flood types, with credibly varying influences of water depth, contamination, duration, implementation of property-level precautionary measures, insurance, and previous flood experience; these influences overlap across most events or regions, however. We infer that the underlying damaging processes of distinct flood types deserve further attention. Each reported flood loss and affected region involved mixed flood types, likely explaining the uncertainty in the coefficients. Our results emphasise the need to consider flood types as an important step towards applying flood loss models elsewhere. We argue that failing to do so may unduly generalise the model and systematically bias loss estimations from empirical data.},
  language  = {en}
}
@article{SamprognaMohorThiekenKorup2021,
  author    = {Samprogna Mohor, Guilherme and Thieken, Annegret Henriette and Korup, Oliver},
  title     = {Residential flood loss estimated from Bayesian multilevel models},
  series = {Natural Hazards and Earth System Sciences},
  volume    = {21},
  journal   = {Natural Hazards and Earth System Sciences},
  publisher = {European Geophysical Society},
  address   = {Katlenburg-Lindau},
  issn      = {2195-9269},
  doi       = {10.5194/nhess-21-1599-2021},
  pages     = {1599 -- 1614},
  year      = {2021},
  abstract  = {Models for the predictions of monetary losses from floods mainly blend data deemed to represent a single flood type and region. Moreover, these approaches largely ignore indicators of preparedness and how predictors may vary between regions and events, challenging the transferability of flood loss models. We use a flood loss database of 1812 German flood-affected households to explore how Bayesian multilevel models can estimate normalised flood damage stratified by event, region, or flood process type. Multilevel models acknowledge natural groups in the data and allow each group to learn from others. We obtain posterior estimates that differ between flood types, with credibly varying influences of water depth, contamination, duration, implementation of property-level precautionary measures, insurance, and previous flood experience; these influences overlap across most events or regions, however. We infer that the underlying damaging processes of distinct flood types deserve further attention. Each reported flood loss and affected region involved mixed flood types, likely explaining the uncertainty in the coefficients. Our results emphasise the need to consider flood types as an important step towards applying flood loss models elsewhere. We argue that failing to do so may unduly generalise the model and systematically bias loss estimations from empirical data.},
  language  = {en}
}
@misc{FischerBrettinRoessneretal.2022,
  author    = {Fischer, Melanie and Brettin, Jana and Roessner, Sigrid and Walz, Ariane and Fort, Monique and Korup, Oliver},
  title     = {Rare flood scenarios for a rapidly growing high-mountain city: Pokhara, Nepal},
  series = {Zweitver{\"o}ffentlichungen der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  journal   = {Zweitver{\"o}ffentlichungen der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  number    = {1284},
  issn      = {1866-8372},
  doi       = {10.25932/publishup-57120},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-571209},
  pages     = {3105 -- 3123},
  year      = {2022},
  abstract  = {Pokhara (ca. 850 m a.s.l.), Nepal's second-largest city, lies at the foot of the Higher Himalayas and has more than tripled its population in the past 3 decades. Construction materials are in high demand in rapidly expanding built-up areas, and several informal settlements cater to unregulated sand and gravel mining in the Pokhara Valley's main river, the Seti Khola. This river is fed by the Sabche glacier below Annapurna III (7555 m a.s.l.), some 35 km upstream of the city, and traverses one of the steepest topographic gradients in the Himalayas. In May 2012 a sudden flood caused >70 fatalities and intense damage along this river and rekindled concerns about flood risk management. We estimate the flow dynamics and inundation depths of flood scenarios using the hydrodynamic model HEC-RAS (Hydrologic Engineering Center's River Analysis System). We simulate the potential impacts of peak discharges from 1000 to 10 000 m3 s-1 on land cover based on high-resolution Maxar satellite imagery and OpenStreetMap data (buildings and road network). We also trace the dynamics of two informal settlements near Kaseri and Yamdi with high potential flood impact from RapidEye, PlanetScope, and Google Earth imagery of the past 2 decades. Our hydrodynamic simulations highlight several sites of potential hydraulic ponding that would largely affect these informal settlements and sites of sand and gravel mining. These built-up areas grew between 3- and 20-fold, thus likely raising local flood exposure well beyond changes in flood hazard. Besides these drastic local changes, about 1 \% of Pokhara's built-up urban area and essential rural road network is in the highest-hazard zones highlighted by our flood simulations. Our results stress the need to adapt early-warning strategies for locally differing hydrological and geomorphic conditions in this rapidly growing urban watershed.},
  language  = {en}
}
@article{FischerBrettinRoessneretal.2022,
  author    = {Fischer, Melanie and Brettin, Jana and Roessner, Sigrid and Walz, Ariane and Fort, Monique and Korup, Oliver},
  title     = {Rare flood scenarios for a rapidly growing high-mountain city: Pokhara, Nepal},
  series = {Natural Hazards and Earth System Sciences},
  volume    = {22},
  journal   = {Natural Hazards and Earth System Sciences},
  edition   = {9},
  publisher = {Copernicus Publications},
  address   = {Katlenburg-Lindau},
  issn      = {1684-9981},
  doi       = {10.5194/nhess-22-3105-2022},
  pages     = {3105 -- 3123},
  year      = {2022},
  abstract  = {Pokhara (ca. 850 m a.s.l.), Nepal's second-largest city, lies at the foot of the Higher Himalayas and has more than tripled its population in the past 3 decades. Construction materials are in high demand in rapidly expanding built-up areas, and several informal settlements cater to unregulated sand and gravel mining in the Pokhara Valley's main river, the Seti Khola. This river is fed by the Sabche glacier below Annapurna III (7555 m a.s.l.), some 35 km upstream of the city, and traverses one of the steepest topographic gradients in the Himalayas. In May 2012 a sudden flood caused >70 fatalities and intense damage along this river and rekindled concerns about flood risk management. We estimate the flow dynamics and inundation depths of flood scenarios using the hydrodynamic model HEC-RAS (Hydrologic Engineering Center's River Analysis System). We simulate the potential impacts of peak discharges from 1000 to 10 000 m3 s-1 on land cover based on high-resolution Maxar satellite imagery and OpenStreetMap data (buildings and road network). We also trace the dynamics of two informal settlements near Kaseri and Yamdi with high potential flood impact from RapidEye, PlanetScope, and Google Earth imagery of the past 2 decades. Our hydrodynamic simulations highlight several sites of potential hydraulic ponding that would largely affect these informal settlements and sites of sand and gravel mining. These built-up areas grew between 3- and 20-fold, thus likely raising local flood exposure well beyond changes in flood hazard. Besides these drastic local changes, about 1 \% of Pokhara's built-up urban area and essential rural road network is in the highest-hazard zones highlighted by our flood simulations. Our results stress the need to adapt early-warning strategies for locally differing hydrological and geomorphic conditions in this rapidly growing urban watershed.},
  language  = {en}
}
@misc{KorzeniowskaBuehlerMauroetal.2017,
  author    = {Korzeniowska, Karolina and B{\"u}hler, Yves and Mauro, Marty and Korup, Oliver},
  title     = {Regional snow-avalanche detection using object-based image analysis of near-infrared aerial imagery},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-403942},
  pages     = {14},
  year      = {2017},
  abstract  = {Snow avalanches are destructive mass movements in mountain regions that continue to claim lives and cause infrastructural damage and traffic detours. Given that avalanches often occur in remote and poorly accessible steep terrain, their detection and mapping is extensive and time consuming. Nonetheless, systematic avalanche detection over large areas could help to generate more complete and up-to-date inventories (cadastres) necessary for validating avalanche forecasting and hazard mapping. In this study, we focused on automatically detecting avalanches and classifying them into release zones, tracks, and run-out zones based on 0.25 m near-infrared (NIR) ADS80-SH92 aerial imagery using an object-based image analysis (OBIA) approach. Our algorithm takes into account the brightness, the normalised difference vegetation index (NDVI), the normalised difference water index (NDWI), and its standard deviation (SDNDWI) to distinguish avalanches from other land-surface elements. Using normalised parameters allows applying this method across large areas. We trained the method by analysing the properties of snow avalanches at three 4 km-2 areas near Davos, Switzerland. We compared the results with manually mapped avalanche polygons and obtained a user's accuracy of > 0.9 and a Cohen's kappa of 0.79-0.85. Testing the method for a larger area of 226.3 km-2, we estimated producer's and user's accuracies of 0.61 and 0.78, respectively, with a Cohen's kappa of 0.67. Detected avalanches that overlapped with reference data by > 80 \% occurred randomly throughout the testing area, showing that our method avoids overfitting. Our method has potential for large-scale avalanche mapping, although further investigations into other regions are desirable to verify the robustness of our selected thresholds and the transferability of the method.},
  language  = {en}
}
@misc{MeyerSchwanghartKorupetal.2015,
  author    = {Meyer, Nele Kristin and Schwanghart, Wolfgang and Korup, Oliver and Nadim, F.},
  title     = {Roads at risk},
  series = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  journal   = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  number    = {519},
  issn      = {1866-8372},
  doi       = {10.25932/publishup-40958},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-409586},
  pages     = {11},
  year      = {2015},
  abstract  = {Globalisation and interregional exchange of people, goods, and services has boosted the importance of and reliance on all kinds of transport networks. The linear structure of road networks is especially sensitive to natural hazards. In southern Norway, steep topography and extreme weather events promote frequent traffic disruption caused by debris flows. Topographic susceptibility and trigger frequency maps serve as input into a hazard appraisal at the scale of first-order catchments to quantify the impact of debris flows on the road network in terms of a failure likelihood of each link connecting two network vertices, e.g. road junctions. We compute total additional traffic loads as a function of traffic volume and excess distance, i.e. the extra length of an alternative path connecting two previously disrupted network vertices using a shortest-path algorithm. Our risk metric of link failure is the total additional annual traffic load, expressed as vehicle kilometres, because of debris-flow-related road closures. We present two scenarios demonstrating the impact of debris flows on the road network and quantify the associated path-failure likelihood between major cities in southern Norway. The scenarios indicate that major routes crossing the central and north-western part of the study area are associated with high link-failure risk. Yet options for detours on major routes are manifold and incur only little additional costs provided that drivers are sufficiently well informed about road closures. Our risk estimates may be of importance to road network managers and transport companies relying on speedy delivery of services and goods.},
  language  = {en}
}
@article{KorzeniowskaBuehlerMartyetal.2017,
  author    = {Korzeniowska, Karolina and B{\"u}hler, Yves and Marty, Mauro and Korup, Oliver},
  title     = {Regional snow-avalanche detection using object-based image analysis of near-infrared aerial imagery},
  series = {Natural hazards and earth system sciences : NHESS},
  volume    = {17},
  journal   = {Natural hazards and earth system sciences : NHESS},
  publisher = {Copernicus},
  address   = {G{\"o}ttingen},
  issn      = {1561-8633},
  doi       = {10.5194/nhess-17-1823-2017},
  pages     = {1823 -- 1836},
  year      = {2017},
  abstract  = {Snow avalanches are destructive mass movements in mountain regions that continue to claim lives and cause infrastructural damage and traffic detours. Given that avalanches often occur in remote and poorly accessible steep terrain, their detection and mapping is extensive and time consuming. Nonetheless, systematic avalanche detection over large areas could help to generate more complete and up-to-date inventories (cadastres) necessary for validating avalanche forecasting and hazard mapping. In this study, we focused on automatically detecting avalanches and classifying them into release zones, tracks, and run-out zones based on 0.25 m near-infrared (NIR) ADS80-SH92 aerial imagery using an object-based image analysis (OBIA) approach. Our algorithm takes into account the brightness, the normalised difference vegetation index (NDVI), the normalised difference water index (NDWI), and its standard deviation (SDNDWI) to distinguish avalanches from other land-surface elements. Using normalised parameters allows applying this method across large areas. We trained the method by analysing the properties of snow avalanches at three 4 km-2 areas near Davos, Switzerland. We compared the results with manually mapped avalanche polygons and obtained a user's accuracy of > 0.9 and a Cohen's kappa of 0.79-0.85. Testing the method for a larger area of 226.3 km-2, we estimated producer's and user's accuracies of 0.61 and 0.78, respectively, with a Cohen's kappa of 0.67. Detected avalanches that overlapped with reference data by > 80 \% occurred randomly throughout the testing area, showing that our method avoids overfitting. Our method has potential for large-scale avalanche mapping, although further investigations into other regions are desirable to verify the robustness of our selected thresholds and the transferability of the method.},
  language  = {en}
}
@misc{BubeckAertsdeMoeletal.2016,
  author    = {Bubeck, Philip and Aerts, Jeroen C. J. H. and de Moel, Hans and Kreibich, Heidi},
  title     = {Preface},
  series = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  journal   = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  number    = {609},
  issn      = {1866-8372},
  doi       = {10.25932/publishup-41238},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-412387},
  pages     = {6},
  year      = {2016},
  abstract  = {kein abstract},
  language  = {en}
}
@book{OPUS4-3261,
  title     = {Exkursion selbst gemacht : innovative Exkursionsmethoden f{\"u}r den Geographieunterricht},
  editor    = {Budke, Alexandra and Wienecke, Maik},
  publisher = {Universit{\"a}tsverlag Potsdam},
  address   = {Potsdam},
  isbn      = {978-3-86956-005-2},
  issn      = {1868-2499},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-33347},
  publisher      = {Universit{\"a}t Potsdam},
  pages     = {124},
  year      = {2009},
  abstract  = {Ein traditioneller und wichtiger Bestandteil des Erdkundeunterrichts der Schule, wie auch des Geographiestudiums an der Universit{\"a}t sind Exkursionen. Vor allem hier ist die M{\"o}glichkeit gegeben, die Theorie an der Praxis zu messen. Die viele Jahrzehnte lang nahezu unangetastete Legitimation von Exkursionen in Unterricht und Studium durch Leitbegriffe wie „Authentizit{\"a}t", „originale Begegnung" und „Realraumerfahrung" werden heute jedoch vor dem Hintergrund der Entwicklungen in der Fachwissenschaft sowie in der Fachdidaktik zunehmend in Frage gestellt. Besonders die konstruktivistische Wende in der Geographiedidaktik stellte die Exkursionsdidaktik vor große Herausforderungen. Man fragte sich: Wenn „R{\"a}ume" nicht mehr als Realr{\"a}ume untersucht werden und Exkursionen nicht automatisch damit gerechtfertigt werden k{\"o}nnen, dass sie Unterricht außerhalb des Klassenzimmers sind, welche Berechtigung haben sie dann noch? Dieser Band begibt sich auf die Suche nach theoretischen Antworten auf diese Frage und stellt darauf aufbauend innovative didaktische Konzepte vor. Es werden geographische Exkursionen beschrieben, auf denen mit unterschiedlichen sch{\"u}leraktivierenden Methoden gearbeitet wurde. Dabei richtet er sich nicht nur an Geographiedidaktiker, sondern durch die Praxisn{\"a}he der einzelnen Aufs{\"a}tze auch ganz gezielt an Lehrerinnen und Lehrer.},
  language  = {de}
}
@book{BestGebhardt2001,
  author    = {Best, Ulrich and Gebhardt, Dirk},
  title     = {Ghetto-Diskurse : Geographie der Stigmatisierung in Marseille und Berlin},
  issn      = {1868-2499},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-45507},
  publisher      = {Universit{\"a}t Potsdam},
  year      = {2001},
  abstract  = {Vorbemerkungen "Ghettos" und "Armutsviertel" in deutschen St{\"a}dten wurden Ende der 90er Jahre ein zentrales und umk{\"a}mpftes Motiv. Publizistische und politische Programme und Pers{\"o}nlichkeiten legitimierten und profilierten sich rund um diese Begriffe, die sich so zu einem stabilen Deutungssystem der Stadt, in diesem Fall zu einer Folge von Bedrohungsszenarien entwickelten. In diesem Kontext, der uns in Berlin fast jeden Tag in der Zeitung begegnete, entdeckten wir unabh{\"a}ngig voneinander ein Forschungsfeld f{\"u}r unsere Diplomarbeiten, in dem wir unser Interesse an theoretischen und konzeptionellen Ans{\"a}tzen in der Geographie mit politischen Fragen zusammenbringen und -denken konnten. Obwohl Diskurse, Bilderwelten und Identit{\"a}ten im Rahmen der Stadtgeographie, der Sozialgeographie und der Politischen Geographie mittlerweile zu wichtigen Themen geworden sind, gab es auf den ersten Blick innerhalb der deutschsprachigen Geographie nur wenige Ankn{\"u}pfungspunkte f{\"u}r unsere Untersuchungen. Wir fanden meist erst jenseits der Sprach- und Disziplingrenzen eine reichhaltige, theoriegeleitete Debatte vor, die unsere Fragestellungen inspirierte. Zentrale Konzepte - Diskurse, Macht, die {\"u}ber diese Diskurse wirkt, {\"u}ber Denkfiguren und Bilder Identit{\"a}ten erzeugt und Menschen einordnet - passierten wir auf einer Art Forschungsreise, die zu vielen nichtgeographischen Autoren, nicht zuletzt zu MICHEL FOUCAULT f{\"u}hrte. Die Rolle von "Raum" in diesen wissenschaftlichen Konzepten, der Hinweis auf die Erschaf-fung von "uns" und "anderen", außen und innen, und die Rolle von diesen Konzepten "im Raum" als komplexes Geflecht von materiellen, sozialen und symbolischen Elementen war f{\"u}r uns faszinierend. Sie warf Fragen auf, die in unseren Diplomarbeiten bei weitem nicht zu Gen{\"u}ge angesprochen, geschweige denn beantwortet werden konnten. Das Thema ist f{\"u}r uns also noch lange nicht abgehakt. Wir versuchten in unseren Arbeiten einen kritischen Standpunkt einzunehmen, der nicht nach einer politisch vorgegebenen Agenda Probleml{\"o}sungen sucht, sondern den Prozeß der Definition von Problemen selbst und die daran ankn{\"u}pfenden Ordnungen und L{\"o}sungen in Frage stellt. Viele Akteure aus der Politik, den Medien, der Wissenschaft und aus Institutionen wie der Polizei oder Wohnungsbaugesellschaften und schließlich auch die unterschiedlichen Bewohner der Stadt selbst sind an diesem Prozess in ihren sehr unterschiedlichen Rollen und Positionen beteiligt. Die Geographien der Stigmatisierung sind die Resultate der Stigmatisierungsprozesse in Presse und Politik und der verschiedenen Positionen innerhalb dieser Prozesse und Machtstrukturen. Sie werden aber auch Teil der Handlungen der Stigmatisierten, ihrer Geographien von der Stadt, von sich selbst, von den Anderen. Unser Ziel war es zu zeigen, wie in den Diskursen der Stadtentwicklung Bilder die Wirklichkeit machen, indem die Akteure mittels dieser Diskurse harte Grenzen in der Stadt ziehen, Zuschreibungen von gesund und pathologisch, legitim und illegitim vornehmen. So wird schließlich auch die Wirklichkeit nicht nur in den K{\"o}pfen und in der Stadtlandschaft herbeigedacht/-geschrieben/-geredet, sondern in der Folge auch durch politische oder administrative Maßnahmen geschaffen. Von diesen Grundlagen ausgehend, nahmen wir zwei unterschiedliche Wege, die in diesem Band zusammenfinden - nicht als Synthese, sondern als verschiedenartiges Ausloten dieser Prozesse. DIRK GEBHARDT untersucht diese Prozesse der Raumordnung in einem deutsch-franz{\"o}sischen Vergleich. Er vergleicht die Bilder und Diskurse {\"u}ber Viertel wie dasjenige der Soldiner-/Koloniestraße in Berlin-Wedding, den Hermannplatz in Neuk{\"o}lln und den "Sozialpalast" in Sch{\"o}neberg mit den Diskursen {\"u}ber innerst{\"a}dtische Viertel und Großwohn-siedlungen ("cit{\´e}s") mit hohem Zuwandereranteil in Marseille. Dieser Teil des Bandes erzeugt somit eine gewisse Breite und ergr{\"u}ndet die Tiefe der Bilder, ihrer Logiken und Zusammenh{\"a}nge. ULRICH BEST konzentriert sich auf Berlin-Kreuzberg. Er stellt die aktuelle Rolle Kreuzbergs in Diskussionen der Stadtpolitik in Berlin dar und betrachtet sie in der Geschichte der Rollen Kreuzbergs als eines "anderen Bezirks" - also die historischen Geographien der Stigmatisierung. Zum zweiten verbindet er diese Ebene der stadtpolitischen Zuschreibungen mit den Selbstzuschreibungen der Bewohner Kreuzbergs, fragt nach Parallelen und nach den Bewohner-Strategien im Umgang mit dem Stigma. Wie wir bereits oben andeuteten, sind die Arbeiten von unserer Seite jeweils die Ergebnisse eines Entdeckens neuer Ans{\"a}tze und des Versuchs einer Positionierung in der Verworrenheit und scheinbaren Gewichtslosigkeit der Diskurse. Von unserer heutigen Perspektive aus m{\"u}ssen wir sagen, daß allein der Begriff "Diskurs" sich in der deutschsprachigen Geographie inzwischen einer gewissen Beliebtheit erfreut. Wir m{\"o}chten in unseren Arbeiten aber, um das hier noch einmal klar zu sagen, immer auf das Geflecht von Macht, Definition und Politik verweisen und, indem wir dies tun, eine kritische Position einnehmen. Wir sind nicht stehen geblieben. Manches, was wir geschrieben haben, w{\"u}rden wir heute anders schreiben. Es handelte sich um Diplomarbeiten, und zu Diplomarbeiten geh{\"o}rt unserer Meinung nach dieses Entdecken unbedingt dazu. Daher fanden wir es sinnvoll, die Arbeiten in dieser Form zu ver{\"o}ffentlichen, als zwei m{\"o}gliche, teilweise parallele und teilweise voneinander abweichende Strecken in einem Feld voller faszinierender Ideen. Wir freuen uns sehr, daß wir zum einen die M{\"o}glichkeit hatten, sie {\"u}berhaupt zu schreiben und bedanken uns daf{\"u}r bei unseren Betreuern Prof. Dr. Fred Scholz (Ulrich Best) und Prof. Dr. Franz-Josef Kemper (Dirk Gebhardt), sowie bei vielen Freundinnen und Freunden, mit denen wir diskutieren konnten. Wir freuen uns genauso sehr, daß wir nun die M{\"o}glichkeit haben, sie in leicht {\"u}berarbeiteter Form in dieser Reihe zu ver{\"o}ffentlichen. Daf{\"u}r und f{\"u}r viele Ratschl{\"a}ge danken wir den Herausgebern.},
  language  = {de}
}
@book{OPUS4-2756,
  title     = {Wasser, Gesellschaft und st{\"a}dtischer Raum in Mexiko = Agua, sociedad y espacio urbano en M{\´e}xico},
  editor    = {Budke, Alexandra and B{\"u}rkner, Hans-Joachim},
  publisher = {Universit{\"a}tsverlag Potsdam},
  address   = {Potsdam},
  isbn      = {978-3-940793-78-2},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-28978},
  publisher      = {Universit{\"a}t Potsdam},
  pages     = {162},
  year      = {2009},
  abstract  = {{\"A}hnlich wie andere Metropolen in Entwicklungs- und Schwellenl{\"a}ndern hat auch die zweitgr{\"o}ßte Stadt Mexikos, Guadalajara, enorme Schwierigkeiten seine Bev{\"o}lkerung mit sauberem Trinkwasser zu versorgen und das Abwasser sozial- und umweltvertr{\"a}glich zu entsorgen. Gr{\"u}nde f{\"u}r die wachsenden Probleme h{\"a}ngen einerseits mit der Dynamik fortschreitender Urbanisierungsprozesse und andererseits mit der Zunahme sozialer und sozialr{\"a}umlicher Disparit{\"a}ten zusammen. Es werden empirische Arbeiten vorgestellt, die im Rahmen einer studentischen Exkursion entstanden sind und die sich mit dem Zusammenhang zwischen sozialr{\"a}umlichen Disparit{\"a}ten und der Wasserversorgung bzw. Abwasserentsorgung am innerst{\"a}dtischen Flusslauf "Atemajac" besch{\"a}ftigen. Dabei werden vor allem die unterschiedlichen Problemwahrnehmungen der Anwohner des Flusses und die von ihnen gesehenen L{\"o}sungsm{\"o}glichkeiten untersucht.},
  language  = {mul}
}
@book{OPUS4-3332,
  title     = {Am {\"o}stlichen Rand der Europ{\"a}ischen Union},
  series = {Potsdamer Geographische Forschungen},
  journal   = {Potsdamer Geographische Forschungen},
  number    = {28},
  editor    = {Heller, Wilfried and Niemczik-Aramba{\c{s}}a, Mihaela Narcisa},
  publisher = {Universit{\"a}tsverlag Potsdam},
  address   = {Potsdam},
  isbn      = {978-3-940793-97-3},
  issn      = {0940-9688},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-31647},
  publisher      = {Universit{\"a}t Potsdam},
  pages     = {190},
  year      = {2009},
  abstract  = {Die Artikel dieses Bandes wollen anhand ausgew{\"a}hlter Grenzr{\"a}ume und Themen einen Beitrag zur Darstellung der Situation an der neuen {\"o}stlichen Außengrenze der EU leisten. Im Zentrum steht dabei der Grenzraum zwischen der Republik Moldau und Rum{\"a}nien. Analysen der geopolitischen, ethnischen und nationalen sowie {\"o}konomischen und sozialen Probleme dieser L{\"a}nder sollen die Rahmenbedingungen f{\"u}r das Leben der Bev{\"o}lkerung in diesem Grenzraum verdeutlichen. Diese Probleme wirken sich auf den Alltag der Grenzraumbev{\"o}lkerung, besonders auf ihre grenz{\"u}berschreitenden Aktivit{\"a}ten aus. Politik und Wissenschaft m{\"u}ssen sich gerade auch der Probleme der Grenzr{\"a}ume annehmen, weil in Europa das Bem{\"u}hen um eine friedliche "Einheit in der Vielfalt" nicht an den Außengrenzen der EU enden kann.},
  language  = {de}
}
@book{OPUS4-4102,
  title     = {Raumplanung in der Naturgefahren- und Risikoforschung},
  editor    = {Felgentreff, Carsten and Glade, Thomas},
  isbn      = {978-3-935024-80-8},
  issn      = {1868-2499},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-43094},
  publisher      = {Universit{\"a}t Potsdam},
  year      = {2003},
  abstract  = {In sechs Beitr{\"a}gen werden M{\"o}glichkeiten und Schwierigkeiten erl{\"a}utert, mit Instrumenten der Raumordnung zur Vorbeugung von Großschadensereignisse im Zusammenhang mit {\"U}berschwemmungen, Hangrutschungen, Erdbeben u.{\"a}. beizutragen.},
  language  = {de}
}
@misc{FritzOpelTanskietal.2015,
  author    = {Fritz, Michael and Opel, Thomas and Tanski, George and Herzschuh, Ulrike and Meyer, Hanno and Eulenburg, A. and Lantuit, Hugues},
  title     = {Dissolved organic carbon (DOC) in Arctic ground ice},
  series = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  journal   = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  number    = {493},
  issn      = {1866-8372},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-408155},
  pages     = {16},
  year      = {2015},
  abstract  = {Thermal permafrost degradation and coastal erosion in the Arctic remobilize substantial amounts of organic carbon (OC) and nutrients which have accumulated in late Pleistocene and Holocene unconsolidated deposits. Permafrost vulnerability to thaw subsidence, collapsing coastlines and irreversible landscape change are largely due to the presence of large amounts of massive ground ice such as ice wedges. However, ground ice has not, until now, been considered to be a source of dissolved organic carbon (DOC), dissolved inorganic carbon (DIC) and other elements which are important for ecosystems and carbon cycling. Here we show, using biogeochemical data from a large number of different ice bodies throughout the Arctic, that ice wedges have the greatest potential for DOC storage, with a maximum of 28.6 mg L-1 (mean: 9.6 mg L-1). Variation in DOC concentration is positively correlated with and explained by the concentrations and relative amounts of typically terrestrial cations such as Mg2+ and K+. DOC sequestration into ground ice was more effective during the late Pleistocene than during the Holocene, which can be explained by rapid sediment and OC accumulation, the prevalence of more easily degradable vegetation and immediate incorporation into permafrost. We assume that pristine snowmelt is able to leach considerable amounts of well-preserved and highly bioavailable DOC as well as other elements from surface sediments, which are rapidly frozen and stored in ground ice, especially in ice wedges, even before further degradation. We found that ice wedges in the Yedoma region represent a significant DOC (45.2 Tg) and DIC (33.6 Tg) pool in permafrost areas and a freshwater reservoir of 4200 km(2). This study underlines the need to discriminate between particulate OC and DOC to assess the availability and vulnerability of the permafrost car-bon pool for ecosystems and climate feedback upon mobilization.},
  language  = {en}
}
@article{KellermannSchroeterThiekenetal.2020,
  author    = {Kellermann, Patric and Schr{\"o}ter, Kai and Thieken, Annegret Henriette and Haubrock, S{\"o}ren-Nils and Kreibich, Heidi},
  title     = {The object-specific flood damage database HOWAS 21},
  series = {Natural hazards and earth system sciences},
  volume    = {20},
  journal   = {Natural hazards and earth system sciences},
  number    = {9},
  publisher = {Copernicus},
  address   = {G{\"o}ttingen},
  issn      = {1561-8633},
  doi       = {10.5194/nhess-20-2503-2020},
  pages     = {2503 -- 2519},
  year      = {2020},
  abstract  = {The Flood Damage Database HOWAS 21 contains object-specific flood damage data resulting from fluvial, pluvial and groundwater flooding. The datasets incorporate various variables of flood hazard, exposure, vulnerability and direct tangible damage at properties from several economic sectors. The main purpose of development of HOWAS 21 was to support forensic flood analysis and the derivation of flood damage models. HOWAS 21 was first developed for Germany and currently almost exclusively contains datasets from Germany. However, its scope has recently been enlarged with the aim to serve as an international flood damage database; e.g. its web application is now available in German and English. This paper presents the recent advancements of HOWAS 21 and highlights exemplary analyses to demonstrate the use of HOWAS 21 flood damage data. The data applications indicate a large potential of the database for fostering a better understanding and estimation of the consequences of flooding.},
  language  = {en}
}
@book{OPUS4-4100,
  title     = {Neuseeland 1998 : Reader zur Exkursion des Instituts f{\"u}r Geographie der Universit{\"a}t Potsdam mit den Schwerpunkten Migration und Restrukturierung / Deregulierung},
  editor    = {Felgentreff, Carsten and Heller, Wilfried},
  issn      = {1868-2499},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-43084},
  publisher      = {Universit{\"a}t Potsdam},
  year      = {1999},
  abstract  = {Inhalt: Teil A - Exkursionsberichte 1 Auckland 2 Hamilton 3 Rotorua 4 Tongariro 5 Wellington 6 Abel Tasman National Park 7 Punakaiki 8 Franz Josef Glacier 9 Wanaka 10 Christchurch Teil B - Referate 11 Neuseelands Bev{\"o}lkerung (KK) 12 Die Maori (AF) 13 Einwanderung in Neuseeland (MB, AS, BW) 14 Die fr{\"u}he europ{\"a}ische Besiedlung (LE) 15 Das politische System und die Auslandspolitik (TM) 16 Das Sozialsystem in Neuseeland (CH) 17 Die Wohnungspolitik Neuseelands (CL) 18 Infrastruktur und Bildung in Neuseeland (AH) 19 Die Landwirtschaft (TH) 20 Nachhaltigkeit und der Resource Management Act (MK, MG) 21 Die Restrukturierung des Energiesektors (MW) 22 Restructuring - ein lokales Beispiel (JP) 23 Die Perspektiven der sozialen Marktwirtschaft am Beispiel Neuseelands (TG) 24 Literaturverzeichnis},
  language  = {de}
}
@book{Xhindi2013,
  author    = {Xhindi, Nevila},
  title     = {Albania towards a sustainable regional development},
  series = {Praxis Kultur- und Sozialgeographie | PKS},
  journal   = {Praxis Kultur- und Sozialgeographie | PKS},
  number    = {56},
  publisher = {Universit{\"a}tsverlag Potsdam},
  address   = {Potsdam},
  isbn      = {978-3-86956-223-0},
  issn      = {0934-716X},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-62691},
  publisher      = {Universit{\"a}t Potsdam},
  year      = {2013},
  abstract  = {As Albania is accelerating its preparations towards the European Union candidate status, numerous areas of public policy and practices undergo intensive development processes. Regional development policy is a very new area of public policy in Albania, and needs research and development. This study focuses on the process of sustainable development in Albania, by analyzing and comparing the regional development of regions of Tirana, Shkodra and Kukes. The methodology used consists of a literature/desk review; analytical and comparative approach; qualitative interviews; quantitative data collection; analysis. The research is organized in five chapters. First chapter provides an overview of the study framework. The second outlines the theory and scientific framework for sustainable and regional development in relation with geography. The third chapter presents the picture of the regional development in Albania, analyzing the disparities and regional development in the light of EU requirements and NUTS division. Chapter 4 continues by analyzing and comparing the regional development of the regions: Tirana - driver for change, Shkodra - the North in Development and Kukes - the "shrinking" region. Chapter 5 presents the conclusions and recommendations. This research comes to the conclusions that if growth in Albania is to be increased and sustained, a regional development policy needs to be established.},
  language  = {en}
}
@phdthesis{Kox2018,
  author    = {Kox, Thomas},
  title     = {Perception and use of uncertainty in severe weather warnings},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-411541},
  school      = {Universit{\"a}t Potsdam},
  pages     = {154},
  year      = {2018},
  abstract  = {Uncertainty is an essential part of atmospheric processes and thus inherent to weather forecasts. Nevertheless, weather forecasts and warnings are still predominately issued as deterministic (yes or no) forecasts, although research suggests that providing weather forecast users with additional information about the forecast uncertainty can enhance the preparation of mitigation measures. Communicating forecast uncertainty would allow for a provision of information on possible future events at an earlier time. The desired benefit is to enable the users to start with preparatory protective action at an earlier stage of time based on the their own risk assessment and decision threshold. But not all users have the same threshold for taking action. In the course of the project WEXICOM ('Wetterwarnungen: Von der Extremereignis-Information zu Kommunikation und Handlung') funded by the Deutscher Wetterdienst (DWD), three studies were conducted between the years 2012 and 2016 to reveal how weather forecasts and warnings are reflected in weather-related decision-making. The studies asked which factors influence the perception of forecasts and the decision to take protective action and how forecast users make sense of probabilistic information and the additional lead time. In a first exploratory study conducted in 2012, members of emergency services in Germany were asked questions about how weather warnings are communicated to professional endusers in the emergency community and how the warnings are converted into mitigation measures. A large number of open questions were selected to identify new topics of interest. The questions covered topics like users' confidence in forecasts, their understanding of probabilistic information as well as their lead time and decision thresholds to start with preparatory mitigation measures. Results show that emergency service personnel generally have a good sense of uncertainty inherent in weather forecasts. Although no single probability threshold could be identified for organisations to start with preparatory mitigation measures, it became clear that emergency services tend to avoid forecasts based on low probabilities as a basis for their decisions. Based on this findings, a second study conducted with residents of Berlin in 2014 further investigated the question of decision thresholds. The survey questions related to the topics of the perception of and prior experience with severe weather, trustworthiness of forecasters and confidence in weather forecasts, and socio-demographic and social-economic characteristics. Within the questionnaire a scenario was created to determine individual decision thresholds and see whether subgroups of the sample lead to different thresholds. The results show that people's willingness to act tends to be higher and decision thresholds tend to be lower if the expected weather event is more severe or the property at risk is of higher value. Several influencing factors of risk perception have significant effects such as education, housing status and ability to act, whereas socio-demographic determinants alone are often not sufficient to fully grasp risk perception and protection behaviour. Parallel to the quantitative studies, an interview study was conducted with 27 members of German civil protection between 2012 and 2016. The results show that the latest developments in (numerical) weather forecasting do not necessarily fit the current practice of German emergency services. These practices are mostly carried out on alarms and ground truth in a reactive manner rather than on anticipation based on prognosis or forecasts. As the potential consequences rather than the event characteristics determine protective action, the findings support the call and need for impact-based warnings. Forecasters will rely on impact data and need to learn the users' understanding of impact. Therefore, it is recommended to enhance weather communication not only by improving computer models and observation tools, but also by focusing on the aspects of communication and collaboration. Using information about uncertainty demands awareness about and acceptance of the limits of knowledge, hence, the capabilities of the forecaster to anticipate future developments of the atmosphere and the capabilities of the user to make sense of this information.},
  language  = {en}
}
@book{Kreitsch2011,
  author    = {Kreitsch, Thomas},
  title     = {Nachwuchsschw{\"a}che und Nachwuchssicherung in Deutschland : Staat in der Verantwortung f{\"u}r eine aktive Bev{\"o}lkerungspolitik? ; Ein Handbuch zur Bev{\"o}lkerungspolitik},
  publisher = {Universit{\"a}tsverlag Potsdam},
  address   = {Potsdam},
  isbn      = {978-3-86956-006-9},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-49313},
  publisher      = {Universit{\"a}t Potsdam},
  pages     = {398},
  year      = {2011},
  abstract  = {Die Ursache der Nachwuchsschw{\"a}che ist der Geburtenr{\"u}ckgang. Quantitative demografische Determinanten sind auf ideelle Merkmalsauspr{\"a}gungen der Bev{\"o}lkerung und strukturelle Eigenschaften der Gesellschaft zur{\"u}ckzuf{\"u}hren. Die niedrige Fertilit{\"a}t f{\"u}hrt als einflussreiche Kenngr{\"o}ße zu einem Bev{\"o}lkerungsr{\"u}ckgang und zu altersstrukturellen Ver{\"a}nderungen in der Zusammensetzung der Bev{\"o}lkerung, die mit weitreichenden und umfassenden gesellschaftlichen Konsequenzen einhergehen. Indem die Konsequenzen k{\"u}nftig insbesondere auf junge Generationen zur{\"u}ckwirken werden und somit zugleich die Ursachen der niedrigen Geburtenrate verst{\"a}rken, entfaltet die demografische Entwicklung eine Eigendynamik. Maßnahmen zur Nachwuchssicherung treffen jedoch auf ung{\"u}nstige Handlungsvoraussetzungen. Monet{\"a}re und materielle Fertilit{\"a}tsanreize sind von unterschiedlicher demografischer Wirksamkeit und haben an Bedeutung verloren. Gesellschaft und Staat haben den Fokus von einer reaktion{\"a}ren Symptomkurierung, die eine passive Gestaltung der Konsequenzen verfolgt, auf eine aktive Ursachenbek{\"a}mpfung zu richten. Es zeigt sich, dass auf der nationalen Ebene die gr{\"o}ßten Handlungspotentiale erschlossen werden k{\"o}nnen.},
  subject      = {Bev{\"o}lkerungspolitik},
  language  = {de}
}
@book{BarschSaupeBierwagenetal.1994,
  author    = {Barsch, Heiner and Saupe, Gabriele and Bierwagen, Charlotte and Ebert, Beatrix and Goltz, Elke and Halfmann, Jochen and Itzerott, Sibylle and Kaden, Klaus and Knothe, Dieter and Kr{\"u}ger, Wolfgang and Syrbe, Ralf-Uwe and Steinhardt, Uta and Thieme, Siegfried and Ziener, Karen},
  title     = {Bewertung und Gestaltung der naturnahen Landschaft in Schutzgebieten, Erholungs- und Freizeitgebieten. Teil 2},
  editor    = {Barsch, Heiner and Saupe, Gabriele},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-52911},
  publisher      = {Universit{\"a}t Potsdam},
  year      = {1994},
  language  = {de}
}
@article{SmithBookhagenRheinwalt2017,
  author    = {Smith, Taylor and Bookhagen, Bodo and Rheinwalt, Aljoscha},
  title     = {Spatiotemporal patterns of High Mountain Asia's snowmelt season identified with an automated snowmelt detection algorithm, 1987-2016},
  series = {The Cryosphere : TC ; an interactive open access journal of the European Geosciences Union},
  volume    = {11},
  journal   = {The Cryosphere : TC ; an interactive open access journal of the European Geosciences Union},
  issn      = {1994-0416},
  doi       = {10.5194/tc-11-2329-2017},
  pages     = {2329 -- 2343},
  year      = {2017},
  abstract  = {High Mountain Asia (HMA) - encompassing the Tibetan Plateau and surrounding mountain ranges - is the primary water source for much of Asia, serving more than a billion downstream users. Many catchments receive the majority of their yearly water budget in the form of snow, which is poorly monitored by sparse in situ weather networks. Both the timing and volume of snowmelt play critical roles in downstream water provision, as many applications - such as agriculture, drinking-water generation, and hydropower - rely on consistent and predictable snowmelt runoff. Here, we examine passive microwave data across HMA with five sensors (SSMI, SSMIS, AMSR-E, AMSR2, and GPM) from 1987 to 2016 to track the timing of the snowmelt season - defined here as the time between maximum passive microwave signal separation and snow clearance. We validated our method against climate model surface temperatures, optical remote-sensing snow-cover data, and a manual control dataset (n = 2100, 3 variables at 25 locations over 28 years); our algorithm is generally accurate within 3-5 days. Using the algorithm-generated snowmelt dates, we examine the spatiotemporal patterns of the snowmelt season across HMA. The climatically short (29-year) time series, along with complex interannual snowfall variations, makes determining trends in snowmelt dates at a single point difficult. We instead identify trends in snowmelt timing by using hierarchical clustering of the passive microwave data to determine trends in self-similar regions. We make the following four key observations. (1) The end of the snowmelt season is trending almost universally earlier in HMA (negative trends). Changes in the end of the snowmelt season are generally between 2 and 8 days decade 1 over the 29-year study period (5-25 days total). The length of the snowmelt season is thus shrinking in many, though not all, regions of HMA. Some areas exhibit later peak signal separation (positive trends), but with generally smaller magnitudes than trends in snowmelt end. (2) Areas with long snowmelt periods, such as the Tibetan Plateau, show the strongest compression of the snowmelt season (negative trends). These trends are apparent regardless of the time period over which the regression is performed. (3) While trends averaged over 3 decades indicate generally earlier snowmelt seasons, data from the last 14 years (2002-2016) exhibit positive trends in many regions, such as parts of the Pamir and Kunlun Shan. Due to the short nature of the time series, it is not clear whether this change is a reversal of a long-term trend or simply interannual variability. (4) Some regions with stable or growing glaciers - such as the Karakoram and Kunlun Shan - see slightly later snowmelt seasons and longer snowmelt periods. It is likely that changes in the snowmelt regime of HMA account for some of the observed heterogeneity in glacier response to climate change. While the decadal increases in regional temperature have in general led to earlier and shortened melt seasons, changes in HMA's cryosphere have been spatially and temporally heterogeneous.},
  language  = {en}
}
@misc{SmithBookhagenRheinwalt2017,
  author    = {Smith, Taylor and Bookhagen, Bodo and Rheinwalt, Aljoscha},
  title     = {Spatiotemporal patterns of High Mountain Asia's snowmelt season identified with an automated snowmelt detection algorithm, 1987-2016},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-403911},
  pages     = {15},
  year      = {2017},
  abstract  = {High Mountain Asia (HMA) - encompassing the Tibetan Plateau and surrounding mountain ranges - is the primary water source for much of Asia, serving more than a billion downstream users. Many catchments receive the majority of their yearly water budget in the form of snow, which is poorly monitored by sparse in situ weather networks. Both the timing and volume of snowmelt play critical roles in downstream water provision, as many applications - such as agriculture, drinking-water generation, and hydropower - rely on consistent and predictable snowmelt runoff. Here, we examine passive microwave data across HMA with five sensors (SSMI, SSMIS, AMSR-E, AMSR2, and GPM) from 1987 to 2016 to track the timing of the snowmelt season - defined here as the time between maximum passive microwave signal separation and snow clearance. We validated our method against climate model surface temperatures, optical remote-sensing snow-cover data, and a manual control dataset (n = 2100, 3 variables at 25 locations over 28 years); our algorithm is generally accurate within 3-5 days. Using the algorithm-generated snowmelt dates, we examine the spatiotemporal patterns of the snowmelt season across HMA. The climatically short (29-year) time series, along with complex interannual snowfall variations, makes determining trends in snowmelt dates at a single point difficult. We instead identify trends in snowmelt timing by using hierarchical clustering of the passive microwave data to determine trends in self-similar regions. We make the following four key observations. (1) The end of the snowmelt season is trending almost universally earlier in HMA (negative trends). Changes in the end of the snowmelt season are generally between 2 and 8 days decade 1 over the 29-year study period (5-25 days total). The length of the snowmelt season is thus shrinking in many, though not all, regions of HMA. Some areas exhibit later peak signal separation (positive trends), but with generally smaller magnitudes than trends in snowmelt end. (2) Areas with long snowmelt periods, such as the Tibetan Plateau, show the strongest compression of the snowmelt season (negative trends). These trends are apparent regardless of the time period over which the regression is performed. (3) While trends averaged over 3 decades indicate generally earlier snowmelt seasons, data from the last 14 years (2002-2016) exhibit positive trends in many regions, such as parts of the Pamir and Kunlun Shan. Due to the short nature of the time series, it is not clear whether this change is a reversal of a long-term trend or simply interannual variability. (4) Some regions with stable or growing glaciers - such as the Karakoram and Kunlun Shan - see slightly later snowmelt seasons and longer snowmelt periods. It is likely that changes in the snowmelt regime of HMA account for some of the observed heterogeneity in glacier response to climate change. While the decadal increases in regional temperature have in general led to earlier and shortened melt seasons, changes in HMA's cryosphere have been spatially and temporally heterogeneous.},
  language  = {en}
}
@article{MarUngerWalderdorffetal.2022,
  author    = {Mar, Kathleen A. and Unger, Charlotte and Walderdorff, Ludmila and Butler, Tim},
  title     = {Beyond CO2 equivalence},
  series = {Environmental science \& policy},
  volume    = {134},
  journal   = {Environmental science \& policy},
  publisher = {Elsevier},
  address   = {Oxford},
  issn      = {1462-9011},
  doi       = {10.1016/j.envsci.2022.03.027},
  pages     = {127 -- 136},
  year      = {2022},
  abstract  = {In this article we review the physical and chemical properties of methane (CH4) relevant to impacts on climate, ecosystems, and air pollution, and examine the extent to which this is reflected in climate and air pollution governance. Although CH4 is governed under the UNFCCC climate regime, its treatment there is limited to the ways in which it acts as a "CO2 equivalent" climate forcer on a 100-year time frame. The UNFCCC framework neglects the impacts that CH4 has on near-term climate, as well its impacts on human health and ecosystems, which are primarily mediated by methane's role as a precursor to tropospheric ozone. Frameworks for air quality governance generally address tropospheric ozone as a pollutant, but do not regulate CH4 itself. Methane's climate and air quality impacts, together with its alarming rise in atmospheric concentrations in recent years, make it clear that mitigation of CH4 emissions needs to be accelerated globally. We examine challenges and opportunities for further progress on CH4 mitigation within the international governance landscapes for climate change and air pollution.},
  language  = {en}
}
@article{PuppeLeueSommeretal.2022,
  author    = {Puppe, Daniel and Leue, Martin and Sommer, Michael and Schaller, J{\"o}rg and Kaczorek, Danuta},
  title     = {Auto-fluorescence in phytoliths},
  series = {Frontiers in Environmental Science},
  volume    = {10},
  journal   = {Frontiers in Environmental Science},
  publisher = {Frontiers Media},
  address   = {Lausanne},
  issn      = {2296-665X},
  doi       = {10.3389/fenvs.2022.915947},
  pages     = {14},
  year      = {2022},
  abstract  = {The detection of auto-fluorescence in phytogenic, hydrated amorphous silica depositions (phytoliths) has been found to be a promising approach to verify if phytoliths were burnt or not, especially in archaeological contexts. However, it is unknown so far at what temperature and how auto-fluorescence is induced in phytoliths. We used fluorescence microscopy, scanning electron microscope-energy dispersive X-ray spectroscopy (SEM-EDX), and Fourier transform infrared spectroscopy to analyze auto-fluorescence in modern phytoliths extracted from plant samples or in intact leaves of winter wheat. Leaves and extracted phytoliths were heated at different temperatures up to 600 degrees C. The aims of our experiments were i) to find out what temperature is needed to induce auto-fluorescence in phytoliths, ii) to detect temperature-dependent changes in the molecular structure of phytoliths related to auto-fluorescence, and iii) to derive a mechanistic understanding of auto-fluorescence in phytoliths. We found organic compounds associated with phytoliths to cause auto-fluorescence in phytoliths treated at temperatures below approx. 400 degrees C. In phytoliths treated at higher temperatures, i.e., 450 and 600 degrees C, phytolith auto-fluorescence was mainly caused by molecular changes of phytolith silica. Based on our results we propose that auto-fluorescence in phytoliths is caused by clusterization-triggered emissions, which are caused by overlapping electron clouds forming non-conventional chromophores. In phytoliths heated at temperatures above about 400 degrees C dihydroxylation and the formation of siloxanes result in oxygen clusters that serve as non-conventional chromophores in fluorescence events. Furthermore, SEM-EDX analyses revealed that extractable phytoliths were dominated by lumen phytoliths (62\%) compared to cell wall phytoliths (38\%). Our findings might be not only relevant in archaeological phytolith-based examinations, but also for studies on the temperature-dependent release of silicon from phytoliths and the potential of long-term carbon sequestration in phytoliths.},
  language  = {en}
}
@misc{MetinDungSchroeteretal.2018,
  author    = {Metin, Ayse Duha and Dung, Nguyen Viet and Schr{\"o}ter, Kai and Guse, Bj{\"o}rn and Apel, Heiko and Kreibich, Heidi and Vorogushyn, Sergiy and Merz, Bruno},
  title     = {How do changes along the risk chain affect flood risk?},
  series = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  journal   = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  number    = {1067},
  issn      = {1866-8372},
  doi       = {10.25932/publishup-46879},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-468790},
  pages     = {22},
  year      = {2018},
  abstract  = {Flood risk is impacted by a range of physical and socio-economic processes. Hence, the quantification of flood risk ideally considers the complete flood risk chain, from atmospheric processes through catchment and river system processes to damage mechanisms in the affected areas. Although it is generally accepted that a multitude of changes along the risk chain can occur and impact flood risk, there is a lack of knowledge of how and to what extent changes in influencing factors propagate through the chain and finally affect flood risk. To fill this gap, we present a comprehensive sensitivity analysis which considers changes in all risk components, i.e. changes in climate, catchment, river system, land use, assets, and vulnerability. The application of this framework to the mesoscale Mulde catchment in Germany shows that flood risk can vary dramatically as a consequence of plausible change scenarios. It further reveals that components that have not received much attention, such as changes in dike systems or in vulnerability, may outweigh changes in often investigated components, such as climate. Although the specific results are conditional on the case study area and the selected assumptions, they emphasize the need for a broader consideration of potential drivers of change in a comprehensive way. Hence, our approach contributes to a better understanding of how the different risk components influence the overall flood risk.},
  language  = {en}
}
@article{TrietDungMerzetal.2018,
  author    = {Triet, Nguyen Van Khanh and Dung, Nguyen Viet and Merz, Bruno and Apel, Heiko},
  title     = {Towards risk-based flood management in highly productive paddy rice cultivation},
  series = {Natural hazards and earth system sciences},
  volume    = {18},
  journal   = {Natural hazards and earth system sciences},
  number    = {11},
  publisher = {Copernicus},
  address   = {G{\"o}ttingen},
  issn      = {1561-8633},
  doi       = {10.5194/nhess-18-2859-2018},
  pages     = {2859 -- 2876},
  year      = {2018},
  abstract  = {Flooding is an imminent natural hazard threatening most river deltas, e.g. the Mekong Delta. An appropriate flood management is thus required for a sustainable development of the often densely populated regions. Recently, the traditional event-based hazard control shifted towards a risk management approach in many regions, driven by intensive research leading to new legal regulation on flood management. However, a large-scale flood risk assessment does not exist for the Mekong Delta. Particularly, flood risk to paddy rice cultivation, the most important economic activity in the delta, has not been performed yet. Therefore, the present study was developed to provide the very first insight into delta-scale flood damages and risks to rice cultivation. The flood hazard was quantified by probabilistic flood hazard maps of the whole delta using a bivariate extreme value statistics, synthetic flood hydrographs, and a large-scale hydraulic model. The flood risk to paddy rice was then quantified considering cropping calendars, rice phenology, and harvest times based on a time series of enhanced vegetation index (EVI) derived from MODIS satellite data, and a published rice flood damage function. The proposed concept provided flood risk maps to paddy rice for the Mekong Delta in terms of expected annual damage. The presented concept can be used as a blueprint for regions facing similar problems due to its generic approach. Furthermore, the changes in flood risk to paddy rice caused by changes in land use currently under discussion in the Mekong Delta were estimated. Two land-use scenarios either intensifying or reducing rice cropping were considered, and the changes in risk were presented in spatially explicit flood risk maps. The basic risk maps could serve as guidance for the authorities to develop spatially explicit flood management and mitigation plans for the delta. The land-use change risk maps could further be used for adaptive risk management plans and as a basis for a cost-benefit of the discussed land-use change scenarios. Additionally, the damage and risks maps may support the recently initiated agricultural insurance programme in Vietnam.},
  language  = {en}
}
@article{BlumeSchneiderGuentner2021,
  author    = {Blume, Theresa and Schneider, Lisa and G{\"u}ntner, Andreas},
  title     = {Comparative analysis of throughfall observations in six different forest stands},
  series = {Hydrological processes},
  volume    = {36},
  journal   = {Hydrological processes},
  number    = {3},
  publisher = {Wiley},
  address   = {Hoboken},
  issn      = {0885-6087},
  doi       = {10.1002/hyp.14461},
  pages     = {21},
  year      = {2021},
  abstract  = {Throughfall, that is, the fraction of rainfall that passes through the forest canopy, is strongly influenced by rainfall and forest stand characteristics which are in turn both subject to seasonal dynamics. Disentangling the complex interplay of these controls is challenging, and only possible with long-term monitoring and a large number of throughfall events measured in parallel at different forest stands. We therefore based our analysis on 346 rainfall events across six different forest stands at the long-term terrestrial environmental observatory TERENO Northeast Germany. These forest stands included pure stands of beech, pine and young pine, and mixed stands of oak-beech, pine-beech and pine-oak-beech. Throughfall was overall relatively low, with 54-68\% of incident rainfall in summer. Based on the large number of events it was possible to not only investigate mean or cumulative throughfall but also its statistical distribution. The distributions of throughfall fractions show distinct differences between the three types of forest stands (deciduous, mixed and pine). The distributions of the deciduous stands have a pronounced peak at low throughfall fractions and a secondary peak at high fractions in summer, as well as a pronounced peak at higher throughfall fractions in winter. Interestingly, the mixed stands behave like deciduous stands in summer and like pine stands in winter: their summer distributions are similar to the deciduous stands but the winter peak at high throughfall fractions is much less pronounced. The seasonal comparison further revealed that the wooden components and the leaves behaved differently in their throughfall response to incident rainfall, especially at higher rainfall intensities. These results are of interest for estimating forest water budgets and in the context of hydrological and land surface modelling where poor simulation of throughfall would adversely impact estimates of evaporative recycling and water availability for vegetation and runoff.},
  language  = {en}
}
@article{SteidlLischeidEngelkeetal.2021,
  author    = {Steidl, J{\"o}rg and Lischeid, Gunnar and Engelke, Clemens and Koch, Franka},
  title     = {The curse of the past},
  series = {Agriculture, Ecosystems \& Environment},
  volume    = {326},
  journal   = {Agriculture, Ecosystems \& Environment},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {0167-8809},
  doi       = {10.1016/j.agee.2021.107787},
  pages     = {14},
  year      = {2021},
  abstract  = {One challenge for modern agricultural management schemes is the reduction of harmful effects on the envi-ronment, e.g. in terms of the emission of nutrients. Sampling the effluent of tile drains is a very efficient way to sample seepage water from larger areas directly underneath the main rooting zone. Time series of solute con-centration in tile drains can be linked to agricultural management data and thus indicate the efficacy of individual management measures. To that end, the weekly runoff and solute concentration were determined in long-term measurement campaigns at 25 outlets of artificial tile drains at 19 various arable fields in the German federal state of Mecklenburg-Vorpommern. The study sites were distributed within a 23,000 km(2) region and were deemed representative of intense arable land use. In addition, comprehensive meteorological and man-agement data were provided. To disentangle the different effects, monitoring data were subjected to a principal component analysis. Loadings on the prevailing principal components and spatial and temporal patterns of the component scores were considered indicative of different processes. Principal component scores were then related to meteorological and management data via random forest modelling. Hydrological conditions and weather were identified as primary driving forces for the nutrient discharge behaviour of the drain plots, as well as the nitrogen balance. In contrast, direct effects of recent agricultural management could hardly be identified. Instead, we found clear evidence of the long-term and indirect effects of agriculture on nearly all solutes. We conclude that tile drain effluent quality primarily reflected the soil-internal mobilisation or de-mobilisation of nutrients and related solutes rather than allowing inferences to be drawn about recent individual agricultural management measures. On the other hand, principal component analysis revealed a variety of indirect and long-term effects of fertilisation on solutes other than nitrogen or phosphorus that are still widely overlooked in nutrient turnover studies.},
  language  = {en}
}
@misc{SmithBookhagenCannon2015,
  author    = {Smith, Taylor and Bookhagen, Bodo and Cannon, Forest},
  title     = {Improving semi-automated glacier mapping with a multi-method approach},
  series = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  journal   = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  number    = {510},
  issn      = {1866-8372},
  doi       = {10.25932/publishup-40847},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-408471},
  pages     = {13},
  year      = {2015},
  abstract  = {Studies of glaciers generally require precise glacier outlines. Where these are not available, extensive manual digitization in a geographic information system (GIS) must be performed, as current algorithms struggle to delineate glacier areas with debris cover or other irregular spectral profiles. Although several approaches have improved upon spectral band ratio delineation of glacier areas, none have entered wide use due to complexity or computational intensity. In this study, we present and apply a glacier mapping algorithm in Central Asia which delineates both clean glacier ice and debris-covered glacier tongues. The algorithm is built around the unique velocity and topographic characteristics of glaciers and further leverages spectral and spatial relationship data. We found that the algorithm misclassifies between 2 and 10\% of glacier areas, as compared to a similar to 750 glacier control data set, and can reliably classify a given Landsat scene in 3-5 min. The algorithm does not completely solve the difficulties inherent in classifying glacier areas from remotely sensed imagery but does represent a significant improvement over purely spectral-based classification schemes, such as the band ratio of Landsat 7 bands three and five or the normalized difference snow index. The main caveats of the algorithm are (1) classification errors at an individual glacier level, (2) reliance on manual intervention to separate connected glacier areas, and (3) dependence on fidelity of the input Landsat data.},
  language  = {en}
}
@article{LangeBuerkner2021,
  author    = {Lange, Bastian and B{\"u}rkner, Hans-Joachim},
  title     = {Ambiguous avant-gardes and their geographies},
  series = {Die Erde : journal of the Geographical Society of Berlin ; Zeitschrift der Gesellschaft f{\"u}r Erdkunde zu Berlin},
  volume    = {152},
  journal   = {Die Erde : journal of the Geographical Society of Berlin ; Zeitschrift der Gesellschaft f{\"u}r Erdkunde zu Berlin},
  number    = {4},
  publisher = {Gesellschaft f{\"u}r Erdkunde},
  address   = {Berlin},
  issn      = {0013-9998},
  doi       = {10.12854/erde-2021-566},
  pages     = {273 -- 287},
  year      = {2021},
  abstract  = {In the following article, the focus is on the transformative potentials created by so-called persistence avant-gardes and prevention innovators. The text extends Bluhdorn's guiding concept of narratives of hope (Bluhdorn 2017; Bluhdorn and Butzlaff 2019) by considering those groups that are marginalized within debates on socio-ecological transformation. With a closer look at the narratives of prevention and blockade that these actors engage, the ambiguous nature of postgrowth avant-gardes is carved out. Their discursive, argumentative, and effective inhibition of transitory policies is interpreted as a pro-active potential, rather than a mere obstacle to socio-ecological transformation. Adding a geographical perspective, the paper pleads for a more precise theoretical penetration of the ambivalent figure of avantgardes when analyzing processes of local and regional postgrowth.},
  language  = {en}
}
@incollection{CarlaUhink2023,
  author    = {Carl{\`a}-Uhink, Filippo},
  title     = {Prima del Novecento},
  series = {Antichisti ebrei a Rodi e nel Dodecaneso italiano},
  booktitle = {Antichisti ebrei a Rodi e nel Dodecaneso italiano},
  publisher = {Editoriale Scientifica},
  address   = {Napoli},
  isbn      = {979-12-5976-605-2},
  pages     = {119 -- 167},
  year      = {2023},
  language  = {it}
}
@misc{TrietDungMerzetal.2018,
  author    = {Triet, Nguyen Van Khanh and Dung, Nguyen Viet and Merz, Bruno and Apel, Heiko},
  title     = {Towards risk-based flood management in highly productive paddy rice cultivation},
  series = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  journal   = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  number    = {931},
  issn      = {1866-8372},
  doi       = {10.25932/publishup-44603},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-446032},
  pages     = {2859 -- 2876},
  year      = {2018},
  abstract  = {Flooding is an imminent natural hazard threatening most river deltas, e.g. the Mekong Delta. An appropriate flood management is thus required for a sustainable development of the often densely populated regions. Recently, the traditional event-based hazard control shifted towards a risk management approach in many regions, driven by intensive research leading to new legal regulation on flood management. However, a large-scale flood risk assessment does not exist for the Mekong Delta. Particularly, flood risk to paddy rice cultivation, the most important economic activity in the delta, has not been performed yet. Therefore, the present study was developed to provide the very first insight into delta-scale flood damages and risks to rice cultivation. The flood hazard was quantified by probabilistic flood hazard maps of the whole delta using a bivariate extreme value statistics, synthetic flood hydrographs, and a large-scale hydraulic model. The flood risk to paddy rice was then quantified considering cropping calendars, rice phenology, and harvest times based on a time series of enhanced vegetation index (EVI) derived from MODIS satellite data, and a published rice flood damage function. The proposed concept provided flood risk maps to paddy rice for the Mekong Delta in terms of expected annual damage. The presented concept can be used as a blueprint for regions facing similar problems due to its generic approach. Furthermore, the changes in flood risk to paddy rice caused by changes in land use currently under discussion in the Mekong Delta were estimated. Two land-use scenarios either intensifying or reducing rice cropping were considered, and the changes in risk were presented in spatially explicit flood risk maps. The basic risk maps could serve as guidance for the authorities to develop spatially explicit flood management and mitigation plans for the delta. The land-use change risk maps could further be used for adaptive risk management plans and as a basis for a cost-benefit of the discussed land-use change scenarios. Additionally, the damage and risks maps may support the recently initiated agricultural insurance programme in Vietnam.},
  language  = {en}
}
@misc{FeldmannLevermann2016,
  author    = {Feldmann, Johannes and Levermann, Anders},
  title     = {Similitude of ice dynamics against scaling of geometry and physical parameters},
  series = {Postprints der Universit{\"a}t Potsdam : Mathematisch Naturwissenschaftliche Reihe},
  journal   = {Postprints der Universit{\"a}t Potsdam : Mathematisch Naturwissenschaftliche Reihe},
  number    = {564},
  issn      = {1866-8372},
  doi       = {10.25932/publishup-41244},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-412441},
  pages     = {1753 -- 1769},
  year      = {2016},
  abstract  = {The concept of similitude is commonly employed in the fields of fluid dynamics and engineering but rarely used in cryospheric research. Here we apply this method to the problem of ice flow to examine the dynamic similitude of isothermal ice sheets in shallow-shelf approximation against the scaling of their geometry and physical parameters. Carrying out a dimensional analysis of the stress balance we obtain dimensionless numbers that characterize the flow. Requiring that these numbers remain the same under scaling we obtain conditions that relate the geometric scaling factors, the parameters for the ice softness, surface mass balance and basal friction as well as the ice-sheet intrinsic response time to each other. We demonstrate that these scaling laws are the same for both the (two-dimensional) flow-line case and the three-dimensional case. The theoretically predicted ice-sheet scaling behavior agrees with results from numerical simulations that we conduct in flow-line and three-dimensional conceptual setups. We further investigate analytically the implications of geometric scaling of ice sheets for their response time. With this study we provide a framework which, under several assumptions, allows for a fundamental comparison of the ice-dynamic behavior across different scales. It proves to be useful in the design of conceptual numerical model setups and could also be helpful for designing laboratory glacier experiments. The concept might also be applied to real-world systems, e.g., to examine the response times of glaciers, ice streams or ice sheets to climatic perturbations.},
  language  = {en}
}
@misc{FeldmannLevermann2015,
  author    = {Feldmann, Johannes and Levermann, Anders},
  title     = {Interaction of marine ice-sheet instabilities in two drainage basins},
  series = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Universit{\"a}t},
  journal   = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Universit{\"a}t},
  number    = {511},
  issn      = {1866-8372},
  doi       = {10.25932/publishup-40890},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-408903},
  pages     = {15},
  year      = {2015},
  abstract  = {The initiation of a marine ice-sheet instability (MISI) is generally discussed from the ocean side of the ice sheet. It has been shown that the reduction in ice-shelf buttressing and softening of the coastal ice can destabilize a marine ice sheet if the bedrock is sloping upward towards the ocean. Using a conceptional flow-line geometry, we investigate the possibility of whether a MISI can be triggered from the direction of the ice divide as opposed to coastal forcing and explore the interaction between connected basins. We find that the initiation of a MISI in one basin can induce a destabilization in the other. The underlying mechanism of basin interaction is based on dynamic thinning and a consecutive motion of the ice divide which induces a thinning in the adjacent basin and a successive initiation of the instability. Our simplified and symmetric topographic setup allows scaling both the geometry and the transition time between both instabilities. We find that the ice profile follows a universal shape that is scaled with the horizontal extent of the ice sheet and that the same exponent of 1/2 applies for the scaling relation between central surface elevation and horizontal extent as in the pure shallow ice approximation (Vialov profile). Altering the central bed elevation, we find that the extent of grounding-line retreat in one basin determines the degree of interaction with the other. Different scenarios of basin interaction are discussed based on our modeling results as well as on a conceptual flux-balance analysis. We conclude that for the three-dimensional case, the possibility of drainage basin interaction on timescales on the order of 1 kyr or larger cannot be excluded and hence needs further investigation.},
  language  = {en}
}
@misc{LevermannWinkelmann2016,
  author    = {Levermann, Anders and Winkelmann, Hilke Ricarda},
  title     = {A simple equation for the melt elevation feedback of ice sheets},
  series = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  journal   = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  number    = {529},
  issn      = {1866-8372},
  doi       = {10.25932/publishup-40983},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-409834},
  pages     = {9},
  year      = {2016},
  abstract  = {In recent decades, the Greenland Ice Sheet has been losing mass and has thereby contributed to global sea-level rise. The rate of ice loss is highly relevant for coastal protection worldwide. The ice loss is likely to increase under future warming. Beyond a critical temperature threshold, a meltdown of the Greenland Ice Sheet is induced by the self-enforcing feedback between its lowering surface elevation and its increasing surface mass loss: the more ice that is lost, the lower the ice surface and the warmer the surface air temperature, which fosters further melting and ice loss. The computation of this rate so far relies on complex numerical models which are the appropriate tools for capturing the complexity of the problem. By contrast we aim here at gaining a conceptual understanding by deriving a purposefully simple equation for the self-enforcing feedback which is then used to estimate the melt time for different levels of warming using three observable characteristics of the ice sheet itself and its surroundings. The analysis is purely conceptual in nature. It is missing important processes like ice dynamics for it to be useful for applications to sea-level rise on centennial timescales, but if the volume loss is dominated by the feedback, the resulting logarithmic equation unifies existing numerical simulations and shows that the melt time depends strongly on the level of warming with a critical slow-down near the threshold: the median time to lose 10\% of the present-day ice volume varies between about 3500 years for a temperature level of 0.5 degrees C above the threshold and 500 years for 5 degrees C. Unless future observations show a significantly higher melting sensitivity than currently observed, a complete meltdown is unlikely within the next 2000 years without significant ice-dynamical contributions.},
  language  = {en}
}
@article{SchlemmLevermann2021,
  author    = {Schlemm, Tanja and Levermann, Anders},
  title     = {A simple parametrization of m{\´e}lange buttressing for calving glaciers},
  series = {The Cryosphere : TC ; an interactive open access journal of the European Geosciences Union},
  volume    = {15},
  journal   = {The Cryosphere : TC ; an interactive open access journal of the European Geosciences Union},
  number    = {2},
  publisher = {Copernicus},
  address   = {G{\"o}ttingen},
  issn      = {1994-0416},
  doi       = {10.5194/tc-15-531-2021},
  pages     = {531 -- 545},
  year      = {2021},
  abstract  = {Both ice sheets in Greenland and Antarctica are discharging ice into the ocean. In many regions along the coast of the ice sheets, the icebergs calve into a bay. If the addition of icebergs through calving is faster than their transport out of the embayment, the icebergs will be frozen into a melange with surrounding sea ice in winter. In this case, the buttressing effect of the ice melange can be considerably stronger than any buttressing by mere sea ice would be. This in turn stabilizes the glacier terminus and leads to a reduction in calving rates. Here we propose a simple parametrization of ice melange buttressing which leads to an upper bound on calving rates and can be used in numerical and analytical modelling.},
  language  = {en}
}
@article{PuppeKaczorekSchalleretal.2021,
  author    = {Puppe, Daniel and Kaczorek, Danuta and Schaller, J{\"o}rg and Barkusky, Dietmar and Sommer, Michael},
  title     = {Crop straw recycling prevents anthropogenic desilication of agricultural soil-plant systems in the temperate zone},
  series = {Geoderma : an international journal of soil science},
  volume    = {403},
  journal   = {Geoderma : an international journal of soil science},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {0016-7061},
  doi       = {10.1016/j.geoderma.2021.115187},
  pages     = {13},
  year      = {2021},
  abstract  = {Due to the fact that silicon (Si) increases the resistance of plants against diverse abiotic and biotic stresses, Si nowadays is categorized as beneficial substance for plants. However, humans directly influence Si cycling on a global scale. Intensified agriculture and corresponding harvest-related Si exports lead to Si losses in agricultural soils. This anthropogenic desilication might be a big challenge for modern agriculture. However, there is still only little knowledge about Si cycling in agricultural systems of the temperate zone, because most studies focus on rice and sugarcane production in (sub)tropical areas. Furthermore, many studies are performed for a short term only, and thus do not provide the opportunity to analyze slow changes in soil-plant systems (e.g., desilication) over long periods. We analyzed soil and plant samples from an ongoing long-term field experiment (established 1963) in the temperate zone (NE Germany) to evaluate the effects of different nitrogen-phosphoruspotassium (NPK) fertilization rates and crop straw recycling (i.e., straw incorporation) on anthropogenic desilication in the long term. Our results clearly show that crop straw recycling not only prevents anthropogenic desilication (about 43-60\% of Si exports can be saved by crop straw recycling in the long term), but also replenishes plant available Si stocks of agricultural soil-plant systems. Furthermore, we found that a reduction of N fertilization rates of about 69\% is possible without considerable biomass losses. This economy of the need for N fertilizers potentially can be combined with the benefits of crop straw recycling, i.e., enhancement of carbon sequestration via straw inputs and prevention of anthropogenic desilication of agricultural soil-plant systems. Thus crop straw recycling might have the potential to act as key management practice in sustainable, low fertilization agriculture in the temperate zone in the future.},
  language  = {en}
}
@article{SinghSinhaMishraetal.2022,
  author    = {Singh, Manudeo and Sinha, Rajiv and Mishra, Arjit and Babu, Suresh},
  title     = {Wetlandscape (dis)connectivity and fragmentation in a large wetland (Haiderpur) in west Ganga plains, India},
  series = {Earth surface processes and landforms : the journal of the British Geomorphological Research Group},
  volume    = {47},
  journal   = {Earth surface processes and landforms : the journal of the British Geomorphological Research Group},
  number    = {7},
  publisher = {Wiley},
  address   = {New York, NY [u.a.]},
  issn      = {0197-9337},
  doi       = {10.1002/esp.5352},
  pages     = {1872 -- 1887},
  year      = {2022},
  abstract  = {Wetlands are dynamic ecosystems that require continuous monitoring and assessment of degradation status to design strategies for their sustainable management. While hydrology provides the primary functional control for the wetland ecosystem, the loss of landscape connectivity influences wetland degradation in a major way as it leads to fragmentation. This article aims to integrate hydrogeomorphic and ecological concepts for the assessment of degradation status and its causal factors for a large wetland in the western Ganga plains, India, the Haiderpur, using a wetlandscape approach. We have used a remote-sensing-based approach, which offers a powerful tool for assessing and linking cross-scale structures, functions, and controls in a wetlandscape. The Haiderpur, a Ramsar site since December 2021, is an artificial wetland located on the right bank of the Ganga River wherein the inflows are controlled by a barrage constructed on the Ganga River apart from smaller tributaries flowing in from the north. A novel aspect of this work is the integration of river dynamics and its connectivity to the wetlandscape to understand the spatiotemporal variability in the waterspread area in the wetland. In this work, we have developed an integrated wetlandscape assessment approach by evaluating wetland's geomorphic and hydrological connectivity status for the period 1993-2019 (25 years) across three different spatial scales - regional, catchment, and wetland. We have highlighted the ecological implications of connectivity and patch dynamics for developing sustainable wetland management plans.},
  language  = {en}
}
@article{SaviComitiStrecker2021,
  author    = {Savi, Sara and Comiti, Francesco and Strecker, Manfred},
  title     = {Pronounced increase in slope instability linked to global warming},
  series = {Earth surface processes and landforms : the journal of the British Geomorphological Research Group},
  volume    = {46},
  journal   = {Earth surface processes and landforms : the journal of the British Geomorphological Research Group},
  number    = {7},
  publisher = {Wiley},
  address   = {New York},
  issn      = {0197-9337},
  doi       = {10.1002/esp.5100},
  pages     = {1328 -- 1347},
  year      = {2021},
  abstract  = {In recent decades, slope instability in high-mountain regions has often been linked to increase in temperature and the associated permafrost degradation and/or the increase in frequency/intensity of rainstorm events. In this context we analyzed the spatiotemporal evolution and potential controlling mechanisms of small- to medium-sized mass movements in a high-elevation catchment of the Italian Alps (Sulden/Solda basin). We found that slope-failure events (mostly in the form of rockfalls) have increased since the 2000s, whereas the occurrence of debris flows has increased only since 2010. The current climate-warming trend registered in the study area apparently increases the elevation of rockfall-detachment areas by approximately 300 m, mostly controlled by the combined effects of frost-cracking and permafrost thawing. In contrast, the occurrence of debris flows does not exhibit such an altitudinal shift, as it is primarily driven by extreme precipitation events exceeding the 75th percentile of the intensity-duration rainfall distribution. Potential debris-flow events in this environment may additionally be influenced by the accumulation of unconsolidated debris over time, which is then released during extreme rainfall events. Overall, there is evidence that the upper Sulden/Solda basin (above ca. 2500 m above sea level [a.s.l.]), and especially the areas in the proximity of glaciers, have experienced a significant decrease in slope stability since the 2000s, and that an increase in rockfalls and debris flows during spring and summer can be inferred. Our study thus confirms that "forward-looking" hazard mapping should be undertaken in these increasingly frequented, high-elevation areas of the Alps, as environmental change has elevated the overall hazard level in these regions.},
  language  = {en}
}