PARAN , Frédéric

Le présent document propose différents outils et méthodes d'approche pour caractériser les échanges entre rivières et écoulements karstiques dans la traversée des plateaux calcaires. Ce document est destiné aux acteurs de l'eau qui souhaitent étudier ces échanges. Les méthodes présentées ont été testées, développées et appliquées au cours d'un...

National audience

The purpose of this article is to present the results of hydrological monitoring of the Cèze river basin in its limestone zone with a protocol based on synchronizing flow measurements in the river with those of the springs. The aim is to understand the functioning of the river and karst springs and to determine their contribution to the flow of...

Several artificial tracing campaigns were carried out in 2014 and 2015 to assess underground circulations on both sides of the Cèze river (France, Gard) and specially to identify the role of the Cèze-Ardèche interfluve in a complicated geological context. Previous tracing operations had collected important data on groundwater flows on the...

In the interest of creating a point of reference allowing to know the hydrological conditions of the karst system and for the purpose of using it as a parameter in a modeling procedure, a Hydric Indicator of the Karst (HIK) was established from the knowledge acquired on the functioning of the karstic hydrosystem of the Cèze. This indicator...

Since a few years, the recurrence of floods causing important material and human damages in Europe and in other parts of the world, led to the development of operational procedures and research in order to reduce its impact This paper presents a flood risk prevention approach successfully combining geomatic tools, multi-criteria analyses to...

International audience

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...

International audience

Groundwater in karst aquifers is a valuable resource in Mediterranean region which is particularly threatened by climate change. Climate change induces an increase in evapotranspiration and a decrease in rainfall available for groundwater resource. This impacts directly karst aquifer recharge and thus indirectly karst-river interactions. The...