A5088570036- Hydrology and Watershed Management Studies
- Soil erosion and sediment transport
- Plant Water Relations and Carbon Dynamics
- Hydrology and Sediment Transport Processes
- Soil and Water Nutrient Dynamics
- Soil and Unsaturated Flow
- Water Quality and Pollution Assessment
- Toxic Organic Pollutants Impact
- Geology and Paleoclimatology Research
- Integrated Water Resources Management
- Child Nutrition and Water Access
- Wastewater Treatment and Reuse
- Environmental Monitoring and Data Management
- Water-Energy-Food Nexus Studies
- Environmental Education and Sustainability
- Heavy metals in environment
- Landslides and related hazards
- Hydrological Forecasting Using AI
- Groundwater flow and contamination studies
- Cryospheric studies and observations
- Environmental Science and Technology
- Environmental Science and Water Management
- Hydrology and Drought Analysis
- Environmental Policies and Emissions
- Flood Risk Assessment and Management
Karlsruhe Institute of Technology
2011-2024
DVGW-Forschungsstelle am Engler-Bunte-Institut des Karlsruher Instituts für Technologie
2017-2024
Technical University of Munich
2009-2010
Abstract. Throughout its historical development, hydrology as an earth science, but especially a problem-centred engineering discipline has largely relied (quite successfully) on the assumption of stationarity. This includes assuming time invariance boundary conditions such climate, system configurations land use, topography and morphology, dynamics flow regimes flood recurrence at different spatio-temporal aggregation scales. The justification for this was often that when compared with...
Abstract. The organization of drainage basins shows some reproducible phenomena, as exemplified by self-similar fractal river network structures and typical scaling laws, these have been related to energetic optimization principles, such minimization stream power, minimum energy expenditure or maximum "access". Here we describe the dynamics systems using thermodynamics, focusing on generation, dissipation transfer free associated with flow sediment transport. We argue that reflects...
Abstract. According to Dooge (1986) intermediate-scale catchments are systems of organized complexity, being too and yet small be characterized on a statistical/conceptual basis, but large heterogeneous in deterministic manner. A key requirement for building structurally adequate models precisely this intermediate scale is better understanding how different forms spatial organization affect storage release water energy. Here, we propose that combination the concept hydrological response...
Abstract. This study investigates whether a thermodynamically optimal hillslope structure can, if existent, serve as first guess for uncalibrated predictions of rainfall–runoff. To this end we propose thermodynamic framework to link rainfall–runoff processes and dynamics potential energy, kinetic energy capillary binding in catchments hillslopes. The starting point is that hydraulic equilibrium soil corresponds local (LTE), characterized by maximum entropy/minimum free water. Deviations from...
Abstract In several European countries and at the level of Union, we can observe political societal attempts to promote use tap water. Most prominently, Commission proposed revisions for Drinking Water Directive, which includes strategies promoting consumption The comprise following: improving access water, upgrading quality standards enhancing transparency concerning benefits National initiatives in pursue similar that concentrate on water communicating its economic, environmental, social...
Abstract. Recent research explored an alternative energy-centred perspective on hydrological processes, extending beyond the classical analysis of catchment's water balance. Particularly, streamflow and structure river networks have been analysed in framework, which allows for incorporation two additional physical laws: (1) energy is conserved (2) entropy isolated system cannot decrease (first second law thermodynamics). This helpful understanding self-organized geometry open-catchment...
The contamination of riverine sediments and suspended matter with hydrophobic pollutants is typically associated urban land use. However, it rarely related to the sediment supply watershed, because yield data are often missing. We show for a suite watersheds in two regions Germany contrasting use geology that particles polycyclic aromatic hydrocarbons (PAH) can be explained by ratio inhabitants residing within watershed watershed's yield. modeling yields based on Revised Universal Soil Loss...
Abstract. Surface runoff over time shapes the morphology of landscape. The resulting forms and patterns have been shown to follow distinct rules, which hold throughout almost all terrestrial catchments. Given complexity variety Earth's processes, those findings inspired researchers for a century, they resulted in many principles sometimes proclaimed laws explain physics that govern evolution landforms river networks. Most point first second law thermodynamics, describe conservation...
Abstract. The organization of drainage basins shows some reproducible phenomena, as exemplified by self-similar fractal river network structures and typical scaling laws, these have been related to energetic optimization principles, such minimization stream power, minimum energy expenditure or maximum "access". Here we describe the dynamics systems using thermodynamics, focusing on generation, dissipation transfer free associated with flow sediment transport. We argue that reflects...
Abstract. Throughout its historical development, hydrology as an engineering discipline and earth science has relied strongly on the assumption of long-term stationary boundary conditions system configurations, which allowed for simplified sectoral descriptions dynamics hydrological systems. However, in face rapid extensive global changes (of climate, land use etc.) affect all parts cycle, general validity this appears doubtful. Likewise, so does application concepts based stationarity to...
Abstract. This study quantifies soil and land use controls on sediment mobilisation redistribution in cultivated loess landscapes, as these landscapes are frequently used for intensive cultivation highly susceptible to erosion. To this end we developed verified a process based model named CATFLOW-SED at the plot, hillslope catchment scales. The relies an explicit representation of hillslopes their dominant physiographical characteristics which control overland flow formation, particle...
The input of seven heavy metals (Cd, Cr, Cu, Hg, Ni, Pb and Zn) into the large river basins Germany via various point diffuse pathways were estimated for period 1985 through 2000. To quantify emissions sources a nationwide survey on metal data municipal wastewater treatment plants industrial direct discharges was carried out. calculated using an adapted version model MONERIS. This accounts significant transport processes, it includes Geographical Information System (GIS) that provides...
Abstract. This opinion paper proposes a novel framework for exploring how spatial organization alongside with heterogeneity controls functioning of intermediate scale catchments organized complexity. Key idea is that in landscapes implies controlled by hierarchy functional units: hillslope lead topologies and embedded elementary units (EFUs). We argue similar soils vegetation communities thus also soil structures "co-developed" within EFUs an adaptive, self-organizing manner as they have...
Ziel dieser Arbeit war die Entwicklung des prozessbasierten Modells CATFLOW-SED zur Simulation der Bodenerosion durch Wasser. Fur Lossboden wurden optimierte Prozessansatze erarbeitet und erforderlichen Zustandsgrosen parametrisiert. Die Validierung erfolgte auf Basis Datengrundlage eines kleinen, landwirtschaftlich genutzten Einzugsgebietes im Sudwesten Deutschlands. Anschliesend Szenarien zu Anderungen Landnutzung, Bodenbearbeitung Niederschlagsintensitat simuliert.
The concept of agenda-setting has resulted in vibrant research political science. aim this Special Issue is to advance the state on water governance by alluding possibilities for applying particular theoretical perspective issues. Agenda-setting concerns how and when issues enter public debate (discussion agenda) or are taken into account policymakers with a view proposing policies (decision agenda). Simply put, about process drawing paying attention certain Despite intuitiveness concept,...
Abstract. This study proposes a theoretical framework that links hydrological dynamics to thermodynamics, with emphasis on and dissipation of free energy production entropy in the critical zone. Based this theory we analyse simulations physically based model Weiherbach Malalcahuello catchments learn about these different hydro-climatic hydro-pedological settings. Results for catchment suggest existence thermodynamic optimal hillslope structure as result co-evolution biotic patterns soil...
European water policies aim to promote tap consumption among citizens. Our survey of 5815 German respondents investigates factors influencing in key out-of-home settings: workplace, recreational sports, hospitality and travel. Results show is consumed most frequently sports settings least hospitality, highlighting the importance situational over price. Strong correlations between at-home drinking choices suggest stable preferences habit effects. Policy interventions should focus on...
Im Rahmen einer Machbarkeitsstudie wurden bestehende Quantifizierungsansatze des Modellsystems MONERIS methodisch weiterentwickelt und hinsichtlich ihrer Eignung fur die Modellierung auf der Skala groser Flussgebiete getestet. Zudem raumlich zeitlich hoher aufgeloste Eingangsdatensatze implementiert. Auf Grund Bedeutung Schadstoffeintrage Ansatze Methoden Wasserbilanz, Kanalisationssysteme, Erosion Sedimenteintragsverhaltnis, gewasserinterne Retention von partikular transportierten...
Abstract. Recent developments in hydrology have led to a new perspective on runoff processes, extending beyond the classical mass dynamics of water catchment. For instance, stream flow has been analysed thermodynamic framework, which allows incorporation two additional physical laws and enhances our understanding catchments as open environmental systems. Related investigations suggested that energetic extremal principles might constrain hydrological because latter are associated with...