Displacement of Watershed between Two Karstic Rivers

[摘要] 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 Ardeche and Ceze 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.

[发布机构] University of Lyon, UMR EVS 5600, Department Process for Environment and Georesources, Saint-Etienne School of Mines, 158 Cours Fauriel - CS 62362, F-42023, France^1;University of Nice-Sophia-Antipolis, CNRS, UMR 7300, ESPACE, France^2;University of Lyon, UMR EVS 5600, 18 rue Chevreul, Lyon; 69362, France^3

[关键词] Geological map;Hydric conditions;Hydro-system;Karstic;Karstic aquifer;Space and time