The Faculty of Mathematics and Natural Sciences: Browsing Mathematisch-Naturwissenschaftliche Fakultät by Author "Vereecken, Harry"
Now showing items 1-11 of 11
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3D hydrological simulation of a forested headwater catchment: Spatio-temporal validation and scale dependent parameterization
Fang, Zhufeng (2016-09-30)Soil moisture plays a key role in the water and energy balance in soil, vegetation and atmosphere systems. There is a grand need to increase global-scale hyper-resolution water-energy-biogeochemistry land surface modelling ... -
Analysis of veterinary pharmaceuticals in soil and their impact on microbial populations
Zielezny, Yvonne (2008)<p>Veterinary medicines may enter agricultural soils by the use of animal excrements as fertilizers. In this study the impact of veterinary pharmaceuticals sulfadiazine (SDZ) and chlortetracycline (CTC) on soil bacterial ... -
Characterization of soil water content variability at the catchment scale using sensor network and stochastic modelling
Qu, Wei (2015-07-24)Wireless sensor network technology has recently been used for high spatial and temporal resolution soil water content measurements to facilitate better understanding of hydrological processes in catchment scale. Its ... -
Experimental and numerical studies on solute transport in unsaturated heterogeneous porous media under evaporation conditions
Bechtold, Michel (2012-08-31)Groundwater level rise, root water uptake, or evaporation induces local upward water and solute fluxes in soils, causing soil salinization and rise of contaminants to the soil surface, and influencing the migration of ... -
Model-based Source Partitioning of Eddy Covariance Flux Measurements
Klosterhalfen, Anne (2019-05-03)Terrestrial ecosystems constantly exchange momentum, energy, and mass (e.g., water vapor, CO<sub>2</sub>) with the atmosphere above. This exchange is commonly measured with a micrometeorological technique, the eddy covariance ... -
Partitioning of carbon dioxide exchange in rapidly and slowly changing ecosystems
Ney, Patrizia (2019-11-07)Im Hinblick auf den aktuellen Klimawandel besteht die Frage, wie die Biosphäre auf den Globalen Wandel und die daraus hervorgehende lokale Landnutzungsänderung bezüglich ihres Kohlenstoffkreislaufes reagiert. Die Landoberfläche ... -
Performance Analysis and Characterisation of a new Magneto-Electrical Measurement System for Electrical Conductivity Imaging
Verweerd, Arre Job (2007)An often used proxy in hydrogeology is the electrical condutctivity distributioni to study flow and transport of groundwater in soil. In order to map the electrical conductivity distribution of soil columns (length 0.5 m ... -
The role of soil heterogeneity on field scale evapotranspiration: 3D integrative modelling and upscaling of root water uptake
Huber, Katrin (2015-09-24)<em>Background and Motivation</em>: Hydrological models mainly rely on empirical functions to describe root water uptake. However, in case of water limitation due to either scarce or heterogeneously distributed soil water, ... -
Sequential and coupled inversion of time-lapse borehole GPR measurements for vadose zone model parameterization
Yu, Yi (2022-01-31)A profound understanding of the infiltration dynamics into the vadose zone is crucial to our capacity to link surface and subsurface processes for the description of the hydrologic cycle. A key to establish reliable models ... -
Spatio-Temporal Estimation and Validation of Remotely Sensed Vegetation and Hydrological Fluxes in the Rur Catchment, Germany
Ali, Muhammad (2018-03-07)Operational availability of spatio-temporal vegetation and hydrological estimates are becoming increasingly attractive for hydrologic studies from local through regional and global scales, especially in remote areas and ... -
Statistical analysis and combination of active and passive microwave remote sensing methods for soil moisture retrieval
Rötzer, Kathrina (2016-08-15)Knowledge about soil moisture and its spatio-temporal dynamics is essential for the improvement of climate and hydrological modeling, including drought and flood monitoring and forecasting, as well as weather forecasting ...