Determination of overland sheet flow depths, velocities and celerities across the hillslope in watershed modeling is important towards estimation of surface storage, travel times to streams and soil detachment rates. It requires careful characterization of the flow processes. Similarly, determination of the temporal variation of hillslope-riparian-stream hydrologic connectivity requires estimat...

Le ruissellement sur les terres agricoles peut avoir des effets indésirables tels que l'érosion des sols, les inondations et le transport de polluants. Afin de mieux comprendre ce phénomène et d'en limiter les conséquences, nous avons développé un code à l'aide de méthodes numériques récentes : FullSWOF (Full Shallow Water equations for Overland Flow) un code orienté objet écrit en C++. Il est ...

14 15 Rare earth element oxides (REOs) have excellent potential for use as tracers in 16 erosion studies. Using laboratory and field experiments we aimed to develop and test 17 a simple application method for spreading REOs and to use REOs to determine the 18 source of sediment to concentrated overland flow paths. 19 Tracks left by farm machinery (tramlines) in fields act as concentrated flow 2...

Experiments were conducted to evaluate the influence of sediment concentration, slope and discharge on sediment deposition rates and patterns associated with a reduction in bed slope. Analysis of the data shows that up to a certain unit discharge a simple settling equation without a transport term gives a good prediction of the sediment delivery ratio and the grain-size distribution of the depo...

Olaf Kolditz (corresponding author) Jens-Olaf Delfs Geohydrology and Hydroinformatics, Center for Applied Geoscience, University of Tübingen, Tübingen D-72076, Germany and Environmental Informatics, Helmholtz Center for Environmental Research UFZ, 04318 Leipzig, Germany E-mail: [email protected] Claudius Bürger Martin Beinhorn Geohydrology and Hydroinformatics, Center for Applied Geoscience, ...

A path sampling method is proposed for solving the continuity equations describing mass flows over complex landscape surfaces. The modeled quantities are represented by an ensemble of sampling points which are evolved according to the corresponding Green function. The method enables incorporation of multi-scale/multi-process treatments. It has been used to develop simulation tools for overland ...

The probability of landscape-scale disturbances such as fire are expected to increase in the future due to anticipated climate changes and past land management practices. These disturbances can produce dramatic changes in hydrologic responses (e.g. overland flow) that can pose risks to human life, infrastructure, and the environment. Assessing these risks and associated remediation strategies r...