Details zur Publikation

Kategorie Textpublikation
Referenztyp Zeitschriften
DOI 10.5194/hess-21-549-2017
Titel (primär) Spatially distributed characterization of soil-moisture dynamics using travel-time distributions
Autor Heße, F.; Zink, M.; Kumar, R. ORCID logo ; Samaniego, L. ORCID logo ; Attinger, S.
Quelle Hydrology and Earth System Sciences
Erscheinungsjahr 2017
Department CHS
Band/Volume 21
Heft 1
Seite von 549
Seite bis 570
Sprache englisch
UFZ Querschnittsthemen RU5;
Abstract Travel-time distributions are a comprehensive tool for the characterization of hydrological system dynamics. Unlike the streamflow hydrograph, they describe the movement and storage of water within and throughout the hydrological system. Until recently, studies using such travel-time distributions have generally either been applied to lumped models or to real-world catchments using available time series, e.g., stable isotopes. Whereas the former are limited in their realism and lack information on the spatial arrangements of the relevant quantities, the latter are limited in their use of available data sets. In our study, we employ the spatially distributed mesoscale Hydrological Model (mHM) and apply it to a catchment in central Germany. Being able to draw on multiple large data sets for calibration and verification, we generate a large array of spatially distributed states and fluxes. These hydrological outputs are then used to compute the travel-time distributions for every grid cell in the modeling domain. A statistical analysis indicates the general soundness of the upscaling scheme employed in mHM and reveals precipitation, saturated soil moisture and potential evapotranspiration as important predictors for explaining the spatial heterogeneity of mean travel times. In addition, we demonstrate and discuss the high information content of mean travel times for characterization of internal hydrological processes.
dauerhafte UFZ-Verlinkung
Heße, F., Zink, M., Kumar, R., Samaniego, L., Attinger, S. (2017):
Spatially distributed characterization of soil-moisture dynamics using travel-time distributions
Hydrol. Earth Syst. Sci. 21 (1), 549 - 570 10.5194/hess-21-549-2017