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Abstract:
Glacial drainage network and karst environments: morphological comparisons and hydrological modelling. Comparisons between glacial and karst environments are used to propose a methodological transfer in the treatment of hydrological data. The technique employed is based on an analysis of recession curves, where a parameter characterizing the degree of development of the drainage system network is varied. This method has been applied to data from continuous hydro-meteorological monitoring of Baounet glacier (Savoie, France) since 2002. The results show an important increase of the glacial drainage network structure during the ablation season, thereby transferring more and more quickly melt water from the surface of the glacier to the proglacial river. Interannual evolution indicates modulations which correspond to an impact of climate forcing on the glacier.