Impacts des changements climatiques sur les eaux souterraines : réduction des émissions, analyse des processus, mesures ...
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Hydrologic nonstationarity and extrapolating models to predict the future
This paper investigates the uncertainties linked to climate change impacts on runoff in four mesoscale basins (900 to 1800 km(2)) in the Mediterranean region. Runoff simulations were based on a daily conceptual model including a snow module. The model was calibrated and validated according to a differential split-sample test over a 20-year period a...
Regional climate modeling : advances, constraints and use for adaptation planning
This work aims to evaluate the performance of a hydrological balance model in a watershed located in northern Tunisia (wadi Sejnane, 378 km(2)) in present climate conditions using input variables provided by four regional climate models. A modified version (MBBH) of the lumped and single layer surface model BBH (Bucket with Bottom Hole model, in wh...
Extreme hydrological events
During a flood event over a karst watershed, the connections between surface and ground waters appear to be complex ones. The karst may attenuate surface floods by absorbing water or contribute to the surface flood by direct contribution of karst waters in the rivers (perennial and overflowing springs) and by diffuse resurgence along the hillslopes...
Évolutions paradoxales des mares en Sahel non cultivé : diagnostic, causes et conséquences
International audience
Le ruissellement, comprendre pour diagnostiquer et agir
Ce dossier traite des inondations par ruissellement, du diagnostic aux moyens d'actions pour réduire les désordres provoqués. L'accent sera mis sur les points suivants : le ruissellement, oui mais lequel? selon l'échelle l'étude (parcelle, versant, tout le bassin versant), les problématiques sont différentes (érosion, coulées de boue, engorgement d...
Runoff evolution due to land-use change in a small Sahelian catchment
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Land-use changes have been significant these last decades in West Africa, particularly in the Sahel region; in this area, climatic and demographic factors have led to a rise in cropped areas in recent decades causing strong changes in the water cycle and in river regimes. This study compares the rainfall-runoff relationships for two periods (1991-1...
Impacts des changements climatiques sur les eaux souterraines : réduction des émissions, analyse des processus, mesures ...
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Influence of rainfall space-time variability over the Ouémé basin in Benin
Facteurs anthropiques et environnementaux de la recrudescence des inondations au Sahel / Les sociétés rurales face aux c...
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