A5064566700- Hydrology and Watershed Management Studies
- Groundwater flow and contamination studies
- Flood Risk Assessment and Management
- Hydrological Forecasting Using AI
- Hydrology and Sediment Transport Processes
- Single-cell and spatial transcriptomics
- Reservoir Engineering and Simulation Methods
- Soil and Unsaturated Flow
- Geotechnical and construction materials studies
- Hydrology and Drought Analysis
University of Freiburg
2021-2023
Abstract A limited number of gauging stations, especially for nested catchments, hampers a process understanding the interaction between streamflow, groundwater and water usage during drought. Non‐commercial measurement devices can help overcome this lack monitoring, but they need to be thoroughly tested. The Dreisam River in South‐West Germany was affected by several hydrological drought events from 2015 2020 which parts main stream tributaries fell dry. Therefore it provided useful case...
Abstract Hard rock aquifers (HRAs) in West Africa (WA) are located within a thick regolith layer. The representation of tropical integrated hydrological models lacks consensus on aquifer geometries and parameter ranges. Our main objective was to determine the knowledge requirements saturated hydraulic conductivity ( K s ) model critical zone (CZ) HRAs WA. A parametric sensitivity analysis with focus heterogeneity conducted (Parflow‐CLM [Community Land Model]) Upper Ouémé catchment Benin...
Abstract. Human influences threaten environmental flows directly or indirectly through groundwater abstraction. In alluvial geological settings, these may affect the contributions from groundwater-sustaining streamflow during dry summer months. The Dreisam River valley in southwest Germany represents a typical case where recurrent hydrological drought events between 2015 and 2022 have led to interruptions of longitudinal connectivity stream network. When vertical changes streambed dries out...
<p>Currently 40 % of Africa's population still lacks access to clean water. Twice as many rural people live in hard rock areas compared sedimentary areas. In these a thick weathered regolith layer covers the crystalline basement, where groundwater (GW) circulates. Sudanian area West Africa (WA) ,groundwater levels are shallow enough interact directly with surface Therefore, constructing coupled surface-groundwater models helps estimate quantities both, GW and flows, their...
Abstract. Worldwide, human influences directly and indirectly threaten environmental flows through groundwater (GW) abstraction. This highlights the need to consider GW withdrawals together with climatic changes in future water management plans maintain availability river networks. In alluvial geological contexts, such as Dreisam River SouthGermany, contributions from often sustain streamflow summer months. specific case of however, several hydrological drought events between 2015 2022 lead...
Process understanding of the interaction between streamflow, groundwater and water usages under drought are hampered by a limited number gauging stations, especially in tributaries. Recent technological advances facilitate application non-commercial measurement devices for monitoring environmental systems. The Dreisam River South-West Germany was affected several hydrological events from 2015 to 2020, when parts main stream tributaries fell dry. A flexible longitudinal quality quantity...
<p>Even largely perennial rivers can fall dry during drought events. A resulting partial or full drying-up of streambeds is difficult to monitor with conventional gauging stations, but important as it heavily impacts water availability, quality and aquatic ecosystems. With a predicted tendency towards more extreme droughts, event-based intermittency likely increase requiring better longitudinal quantification level streamflow conditions. The Dreisam River in the south-west...