Displacement of Watershed between Two Karstic Rivers

Abstract : Groundwater flow circulating in a karstic hydrosystem is very difficult to grasp in space and time. In cases where the karstic aquifer is located between two rivers, the watershed is not easy to identify using a single analysis of a geological map. In this study, the understanding regarding the karstic hydrosystem between the Ardèche and Cèze Rivers, in the South of France, is advanced. This study especially highlights that the watershed of a karstic hydrosystem evolves depending on the hydric condition of the karstic aquifer. The results are obtained by artificial tracing analysis through the karstic network.
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Hervé Chapuis, Joël Jolivet, Jordan Ré-Bahuaud, Frédéric Paran, Didier Graillot, et al.. Displacement of Watershed between Two Karstic Rivers. 3rd World Multidisciplinary Earth Sciences Symposium (WMESS 2017), IAEG ( International Association for Engineering Geology and the Environnement), Sep 2017, Prague, Czech Republic. pp.022021, ⟨10.1088/1755-1315/95/2/022021⟩. ⟨hal-01763048⟩

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