TY  - JOUR
A1  - Clubb, Fiona J.
A1  - Bookhagen, Bodo
A1  - Rheinwalt, Aljoscha
T1  - Clustering river profiles to classify geomorphic domains
JF  - Journal of geophysical research : Earth surface
N2  - The structure and organization of river networks has been used for decades to investigate the influence of climate and tectonics on landscapes. The majority of these studies either analyze rivers in profile view by extracting channel steepness or calculate planform metrics such as drainage density. However, these techniques rely on the assumption of homogeneity: that intrinsic and external factors are spatially or temporally invariant over the measured profile. This assumption is violated for the majority of Earth's landscapes, where variations in uplift rate, rock strength, climate, and geomorphic process are almost ubiquitous. We propose a method for classifying river profiles to identify landscape regions with similar characteristics by adapting hierarchical clustering algorithms developed for time series data. We first test our clustering on two landscape evolution scenarios and find that we can successfully cluster regions with different erodibility and detect the transient response to sudden base level fall. We then test our method in two real landscapes: first in Bitterroot National Forest, Idaho, where we demonstrate that our method can detect transient incision waves and the topographic signature of fluvial and debris flow process regimes; and second, on Santa Cruz Island, California, where our technique identifies spatial patterns in lithology not detectable through normalized channel steepness analysis. By calculating channel steepness separately for each cluster, our method allows the extraction of more reliable steepness metrics than if calculated for the landscape as a whole. These examples demonstrate the method's ability to disentangle fluvial morphology in complex lithological and tectonic settings.
KW  - clustering
KW  - river networks
KW  - topographic analysis
KW  - landscape evolution modeling
Y1  - 2019
U6  - https://doi.org/10.1029/2019JF005025
SN  - 2169-9003
SN  - 2169-9011
VL  - 124
IS  - 6
SP  - 1417
EP  - 1439
PB  - American Geophysical Union
CY  - Hoboken
ER  - 
TY  - JOUR
A1  - Müller, Eva Nora
A1  - van Schaik, Loes
A1  - Blume, Theresa
A1  - Bronstert, Axel
A1  - Carus, Jana
A1  - Fleckenstein, Jan H.
A1  - Fohrer, Nicola
A1  - Geissler, Katja
A1  - Gerke, Horst H.
A1  - Gräff, Thomas
A1  - Hesse, Cornelia
A1  - Hildebrandt, Anke
A1  - Hölker, Franz
A1  - Hunke, Philip
A1  - Körner, Katrin
A1  - Lewandowski, Jörg
A1  - Lohmann, Dirk
A1  - Meinikmann, Karin
A1  - Schibalski, Anett
A1  - Schmalz, Britta
A1  - Schröder-Esselbach, Boris
A1  - Tietjen, Britta
T1  - Scales, key aspects, feedbacks and challenges of ecohydrological research in Germany
JF  - Hydrologie und Wasserbewirtschaftung
N2  - Ecohydrology analyses the interactions of biotic and abiotic aspects of our ecosystems and landscapes. It is a highly diverse discipline in terms of its thematic and methodical research foci. This article gives an overview of current German ecohydrological research approaches within plant-animal-soil-systems, meso-scale catchments and their river networks, lake systems, coastal areas and tidal rivers. It discusses their relevant spatial and temporal process scales and different types of interactions and feedback dynamics between hydrological and biotic processes and patterns. The following topics are considered key challenges: innovative analysis of the interdisciplinary scale continuum, development of dynamically coupled model systems, integrated monitoring of coupled processes at the interface and transition from basic to applied ecohydrological science to develop sustainable water and land resource management strategies under regional and global change.
KW  - Coastal regions
KW  - drylands
KW  - ecohydrological modelling
KW  - feedback
KW  - hyporheic zone
KW  - meso-scale ecosystems
KW  - plant-animal-soil-system
KW  - river networks
Y1  - 2014
U6  - https://doi.org/10.5675/HyWa_2014,4_2
SN  - 1439-1783
VL  - 58
IS  - 4
SP  - 221
EP  - 240
PB  - Bundesanst. für Gewässerkunde
CY  - Koblenz
ER  -