@article{ZeedenObrehtVeresetal.2020, author = {Zeeden, Christian and Obreht, Igor and Veres, Daniel and Kaboth-Bahr, Stefanie and Hošek, Jan and Marković, Slobodan B. and B{\"o}sken, Janina and Lehmkuhl, Frank and Rolf, Christian and Hambach, Ulrich}, title = {Smoothed millennial-scale palaeoclimatic reference data as unconventional comparison targets: Application to European loess records}, series = {Scientific Reports}, volume = {10}, journal = {Scientific Reports}, number = {1}, publisher = {Springer Nature}, address = {Berlin}, pages = {13}, year = {2020}, abstract = {Millennial-scale palaeoclimate variability has been documented in various terrestrial and marine palaeoclimate proxy records throughout the Northern Hemisphere for the last glacial cycle. Its clear expression and rapid shifts between different states of climate (Greenland Interstadials and Stadials) represents a correlation tool beyond the resolution of e.g. luminescence dating, especially relevant for terrestrial deposits. Usually, comparison of terrestrial proxy datasets and the Greenland ice cores indicates a complex expression of millennial-scale climate variability as recorded in terrestrial geoarchives including loess. Loess is the most widespread terrestrial geoarchive of the Quaternary and especially widespread over Eurasia. However, loess often records a smoothed representation of millennial-scale variability without all fidelity when compared to the Greenland data, this being a relevant limiting feature in integrating loess with other palaeoclimate records. To better understand the loess proxy-response to millennial-scale climate variability, we simulate a proxy signal smoothing by natural processes through application of low-pass filters of delta O-18 data from Greenland, a high-resolution palaeoclimate reference record, alongside speleothem isotope records from the Black Sea-Mediterranean region. We show that low-pass filters represent rather simple models for better constraining the expression of millennial-scale climate variability in low sedimentation environments, and in sediments where proxy-response signals are most likely affected by natural smoothing (by e.g. bioturbation). Interestingly, smoothed datasets from Greenland and the Black Sea-Mediterranean region are most similar in the last similar to 15 ka and between similar to 50-30 ka. Between similar to 30-15 ka, roughly corresponding to the Last Glacial Maximum and the deglaciation, the records show dissimilarities, challenging the construction of robust correlative time-scales in this age range. From our analysis it becomes apparent that patterns of palaeoclimate signals in loess-palaeosol sequences often might be better explained by smoothed Greenland reference data than the original high-resolution Greenland dataset, or other reference data. This opens the possibility to better assess the temporal resolution and palaeoclimate potential of loess-palaeosol sequences in recording supra-regional climate patterns, as well as to securely integrate loess with other chronologically better-resolved palaeoclimate records.}, language = {en} } @book{AndraeEbertGarbevonKuczkowskietal.2009, author = {Andrae, Marianne and Ebert, Johannes and Garbe-von Kuczkowski, Angela and Garbe, Roland and Grabow, Christian and Klees-Wambach, Marie-Luise and Kofler, Rolf and Mittmann, Michael and Nickel, Michael and N{\"o}then, Thomas and Schrader-Kroschewski, Karen and Schramm, Barbara and Ulrich, Christoph}, title = {Verfahren in Familiensachen : FamFG ; ZPO ; BGB}, series = {Nomos ProzessHandbuch}, journal = {Nomos ProzessHandbuch}, editor = {Garbe, Roland}, publisher = {Nomos; Beck-Online}, address = {Baden-Baden; M{\"u}nchen}, isbn = {978-3-8329-3973-1}, pages = {1200 S.}, year = {2009}, language = {de} } @misc{ZeedenObrehtVeresetal.2020, author = {Zeeden, Christian and Obreht, Igor and Veres, Daniel and Kaboth-Bahr, Stefanie and Hošek, Jan and Marković, Slobodan B. and B{\"o}sken, Janina and Lehmkuhl, Frank and Rolf, Christian and Hambach, Ulrich}, title = {Smoothed millennial-scale palaeoclimatic reference data as unconventional comparison targets: Application to European loess records}, series = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe}, journal = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe}, number = {1}, issn = {1866-8372}, doi = {10.25932/publishup-52427}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-524271}, pages = {15}, year = {2020}, abstract = {Millennial-scale palaeoclimate variability has been documented in various terrestrial and marine palaeoclimate proxy records throughout the Northern Hemisphere for the last glacial cycle. Its clear expression and rapid shifts between different states of climate (Greenland Interstadials and Stadials) represents a correlation tool beyond the resolution of e.g. luminescence dating, especially relevant for terrestrial deposits. Usually, comparison of terrestrial proxy datasets and the Greenland ice cores indicates a complex expression of millennial-scale climate variability as recorded in terrestrial geoarchives including loess. Loess is the most widespread terrestrial geoarchive of the Quaternary and especially widespread over Eurasia. However, loess often records a smoothed representation of millennial-scale variability without all fidelity when compared to the Greenland data, this being a relevant limiting feature in integrating loess with other palaeoclimate records. To better understand the loess proxy-response to millennial-scale climate variability, we simulate a proxy signal smoothing by natural processes through application of low-pass filters of delta O-18 data from Greenland, a high-resolution palaeoclimate reference record, alongside speleothem isotope records from the Black Sea-Mediterranean region. We show that low-pass filters represent rather simple models for better constraining the expression of millennial-scale climate variability in low sedimentation environments, and in sediments where proxy-response signals are most likely affected by natural smoothing (by e.g. bioturbation). Interestingly, smoothed datasets from Greenland and the Black Sea-Mediterranean region are most similar in the last similar to 15 ka and between similar to 50-30 ka. Between similar to 30-15 ka, roughly corresponding to the Last Glacial Maximum and the deglaciation, the records show dissimilarities, challenging the construction of robust correlative time-scales in this age range. From our analysis it becomes apparent that patterns of palaeoclimate signals in loess-palaeosol sequences often might be better explained by smoothed Greenland reference data than the original high-resolution Greenland dataset, or other reference data. This opens the possibility to better assess the temporal resolution and palaeoclimate potential of loess-palaeosol sequences in recording supra-regional climate patterns, as well as to securely integrate loess with other chronologically better-resolved palaeoclimate records.}, language = {en} } @article{MeinckeRaumSchroederetal.1995, author = {Meincke, Rolf and Raum, Bernd and Schr{\"o}der, Ulrich and Uhlenwinkel, Anke}, title = {Terra Erdkunde : Arbeitsheft f{\"u}r Baden-W{\"u}rttemberg 5 / 6}, publisher = {Perthes}, address = {Gotha}, pages = {34 S.}, year = {1995}, language = {de} } @article{MillerUlrichSchwarz2009, author = {Miller, Jeff and Ulrich, Rolf and Schwarz, Wolfgang}, title = {Why jackknifing yields good latency estimates}, issn = {0048-5772}, doi = {10.1111/j.1469-8986.2008.00761.x}, year = {2009}, abstract = {We compared individual-participant and jackknife-based methods for scoring the onset latencies of event-related potential (ERP) components using a diffusion process as a model for an ERP. We studied "ramp-like" components in which the true ERP increases or decreases monotonically, except for noise. If the growth rates of such components vary across participants, the jackknife-based measure can easily have only 10\%-20\% as much error variance as the traditional method, and this advantage is magnified with more participants. We also studied boolean AND-shaped or "bump-like" components. Jackknifing generally yielded smaller error variances with these components too, especially when the component's peak amplitude varied across participants, but less so if the component's peak latency varied. These results help illuminate the reasons for the superiority of jackknife-based onset latency measures over traditional measures in recent simulations.}, language = {en} } @article{EhrlichmannKrumreinKugleretal.1996, author = {Ehrlichmann, Frank and Krumrein, Frieder and Kugler, Brigitte and Meincke, Rolf and Raum, Bernd and Schr{\"o}der, Ulrich and Uhlenwinkel, Anke and Zimmermann, Bernd and Zoska, Marianne}, title = {Terra Erdkunde : Arbeitsheft f{\"u}r Berlin 5 / 6 ; Lehrerheft}, publisher = {Perthes}, address = {Gotha}, pages = {32 S.}, year = {1996}, language = {de} } @article{EhrlichmannKrumreinKugleretal.1995, author = {Ehrlichmann, Frank and Krumrein, Frieder and Kugler, Brigitte and Meincke, Rolf and Raum, Bernd and Schr{\"o}der, Ulrich and Uhlenwinkel, Anke and Zimmermann, Bernd}, title = {Terra Erdkunde : Arbeitsheft f{\"u}r Berlin 5 / 6}, publisher = {Perthes}, address = {Gotha}, pages = {34 S.}, year = {1995}, language = {de} } @article{EhrlichmannKrumreinMeinckeetal.1995, author = {Ehrlichmann, Frank and Krumrein, Frieder and Meincke, Rolf and Raum, Bernd and Schr{\"o}der, Ulrich and Uhlenwinkel, Anke}, title = {Terra Erdkunde : Arbeitsheft f{\"u}r Brandenburg ; Lehrerheft}, publisher = {Perthes}, address = {Gotha}, pages = {36 S.}, year = {1995}, language = {de} } @article{SirockoDietrichVeresetal.2013, author = {Sirocko, Frank and Dietrich, Stephan and Veres, Daniel and Grootes, Pieter M. and Schaber-Mohr, Katja and Seelos, Klemens and Nadeau, Marie-Josee and Kromer, Bernd and Rothacker, Leo and Roehner, Marieke and Krbetschek, Matthias and Appleby, Peter G. and Hambach, Ulrich and Rolf, Christian and Sudo, Masafumi and Grim, Stephanie}, title = {Multi-proxy dating of Holocene maar lakes and Pleistocene dry maar sediments in the Eifel, Germany}, series = {Quaternary science reviews : the international multidisciplinary research and review journal}, volume = {62}, journal = {Quaternary science reviews : the international multidisciplinary research and review journal}, publisher = {Elsevier}, address = {Oxford}, issn = {0277-3791}, doi = {10.1016/j.quascirev.2012.09.011}, pages = {56 -- 76}, year = {2013}, abstract = {During the last twelve years the ELSA Project (Eifel Laminated Sediment Archive) at Mainz University has drilled a total of about 52 cores from 27 maar lakes and filled-in maar basins in the Eifel/Germany. Dating has been completed for the Holocene cores using 6 different methods (Pb-210 and Cs-137 activities, palynostratigraphy, event markers, varve counting, C-14) In general, the different methods consistently complement one another within error margins. Event correlation was used for relating typical lithological changes with historically known events such as the two major Holocene flood events at 1342 AD and ca 800 BC. Dating of MIS2-MIS3 core sections is based on greyscale tuning, radiocarbon and OSL dating, magnetostratigraphy and tephrochronology. The lithological changes in the sediment cores demonstrate a sequence of events similar to the North Atlantic rapid climate variability of the Last Glacial Cycle. The warmest of the MIS3 interstadials was GI14, when a forest with abundant spruce covered the Eifel area from 55 to 48 ka BP, i.e. during a time when also other climate archives in Europe suggested very warm conditions. The forest of this "Early Stage 3 warm phase" developed subsequently into a steppe with scattered birch and pine, and finally into a glacial desert at around 25 ka BP. Evidence for Mono Lake and Laschamp geomagnetic excursions is found in two long cores. Several large eruptions during Middle and Late Pleistocene (Ulmener Maar - 11,000 varve years BP, Laacher See - 12,900 varve years BP, Mosenberg volcanoes/Meerfelder Maar 41-45 cal ka BP, Dumpel Maar 116 ka BP, Glees Maar - 151 ka BP) produced distinct ash-layers crucial for inter-core and inter-site correlations. The oldest investigated maar of the Eifel is Ar-40/Ar-39 dated to the time older than 520 ka BP.}, language = {en} }