Concept

Cycle de l'eau

Publications associées (186)

Tide-induced surface water and groundwater interactions in coastal wetlands

Intertidal wetlands such as salt marshes are complex hydrological systems characterized by strong, dynamic interactions between coastal surface water and groundwater, driven particularly by tides. We simulated such interactions with a focus on 3D, variably ...

2011

Modeling the Onset of Shallow Landslides in Partially Saturated Slopes Subjected to Rain Infiltration

Lyesse Laloui, Mathieu Nuth, John Eichenberger

Heavy rainfall can lead to shallow slips on slopes which are often initially in a state of partial water saturation. A multiphysics approach and advanced constitutive modeling are necessary to take into account the physical key processes in partially satur ...

ASCE2011

Automated Model-driven Simulation and Visualization of Field Sensor Data

Karl Aberer, Michael Lehning, Sofiane Sarni, Marc Parlange, Mathias Thierry Pierre Bavay, Silvia Simoni

In the EU project Hydrosys (http://www.hydrosysonline.eu), we have defined and implemented a data processing pipeline that makes simulation process completely automated, fast and transparent to the scientist. Furthermore, our automated simulation tool is f ...

2011

Flow measurements in sewer systems based on image analysis: automatic flow velocity algorithm

David Andrew Barry, Luca Rossi, Daniel Sage, Laurent Son Nguyen, Salim Kayal, David Jeanbourquin

Discharges of combined sewer overflows (CSOs) and stormwater are recognized as an important source of environmental contamination. However, the harsh sewer environment and particular hydraulic conditions during rain events reduce the reliability of traditi ...

IWA Publishing2011

Hyporheic flow under periodic bed forms influenced by low-density gradients

David Andrew Barry

Small density variations due to low solute concentrations in the stream water commonly exist in streams and rivers. Using laboratory experiments and numerical modeling, we demonstrated that even such small density variations could influence the hyporheic f ...

American Geophysical Union2011

Seasonal trends and temperature dependence of the snowfall/precipitation-day ratio in Switzerland

Martine Rebetez, Gaëlle Serquet

This paper analyzes the proportion of snowfall days relative to precipitation days, in order to assess the impact of changing temperatures on snowfall, while minimizing the impact of variations in precipitation frequency and intensity. We analyzed the rati ...

2011

Ecohydrology of Terrestrial Ecosystems

Andrea Rinaldo, Paolo d'Odorico

Water controls the dynamics of terrestrial ecosystems directly, as a resource for the biota, and indirectly, as a driver for abiotic processes on the Earth's surface, in the atmosphere, and belowground The biota, in turn, modulate several hydrological proc ...

American Institute of Biological Sciences2010

Transport of nonsorbing solutes in a streambed with periodic bedforms

David Andrew Barry

Previous studies of hyporheic zone focused largely on the net mass transfer of solutes between stream and streambed. Solute transport within the bed has attracted less attention. In this study, we combined flume experiments and numerical simulations to exa ...

Elsevier2010

Spatial and temporal variability of snow depth and SWE in a small mountain catchment

Michael Lehning, Thomas Grünewald

The spatio-temporal variability of the mountain snow cover determines the avalanche danger, snow water storage, permafrost distribution and the local distribution of fauna and flora. Using a new type of terrestrial laser scanner (TLS), which is particularl ...

2010

Effect of stone coverage on soil erosion

David Andrew Barry, Alessandro Brovelli, Seifeddine Jomaa

Soil surface coverage has a significant impact on water infiltration, runoff and soil erosion yields. In particular, surface stones protect the soils from raindrop detachment, they retard the overland flow therefore decreasing its sediment transport capaci ...

2010

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