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DTSTAMP:20190311T155306
UID:6130ea56-440d-11e9-a578-000e0c3db68b
SUMMARY:The role of snow-melt events on runoff generation and groundwaterrecharge -- how isotopes reveal scale effects and climate impacts
DESCRIPTION:Abstract:Time series analysis of environmental tracers combined with hydrologicalobservations and models provides insight into processes of runoffgenerationand groundwater recharge. The natural integration of temporal andspatialvariability of stable isotope data (oxygen-18, deuterium) at differentscales of hydrological systems can be used as a basis for the study ofcatchment response to climate variability and change. This approach isdemonstrated using monitoring data of runoff, groundwater levels, stableisotope and chemical composition at the meso-scale Dreisam catchment(BlackForrest, Germany). The observations reveal that the serious hydrologicdrought in summer 2003 was preceded by deviations from the hydrologicandisotopic regime. The departure from a regular seasonal variation startedalready during winter and spring 2002/2003 - half a year before thehydrological drought became obvious. Isotope data suggest that the lackofintense groundwater recharge from snow-melt due to a warmer than averagewinter season aggravated the drought of 2003. Further investigationsshoweda scale-dependent and event-dependent percentage of snow-meltcontributionsto runoff and groundwater recharge. As a result the role of snow-meltforgroundwater regimes needs to be reviewed. Climate changes resulting indifferent snow-melt conditions might have non-linear impacts on thewaterbalance of catchments and aquifers. Environmental tracers providemethodsfor the integrated study of these processes at different scales.
DTSTART;TZID=Europe/Berlin:20061114T160000
DTEND;TZID=Europe/Berlin:20061114T173000
LOCATION:Pfaffenwaldring 61, Raum U1.003 (MML), Universität Stuttgart, , , , 
URL;VALUE=URI:https://www.iws.uni-stuttgart.de/en/institute/events/The-role-of-snow-melt-events-on-runoff-generation-and-groundwaterrecharge-how-isotopes-reveal-scale-effects-and-climate-impacts/
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