Using complementarity framework to couple subsurface flow and seepage processes: a physically based basis to integrate hotspots reactivity at the hillslope scale

Jean-Raynald De Dreuzy, CNRS, Paris Cedex 16, France, Jean Marçais, Géosciences Rennes, UMR CNRS 6118 - Université Rennes 1, Rennes Cedex, France; Agroparistech, Paris, France and Jocelyne Erhel, INRIA, Rennes, France