Call for communications :
From the hydrogeologist’s point of view, karst is a real challenge, because it is a very heterogeneous medium, which is more difficult to model than porous media. This is the reason why speleologists’ observations are so valuable: they access underground channels that make up the originality of karst hydrogeology (wells, waterfalls, underground rivers, siphons).
The objective of this symposium is to highlight the specificities of karst hydrology highlighted by speleologists (flashfloods, groundwater pollution) and issues for which their in situ observations shed new light. For this reason, the organizers of Symposium 5 are particularly looking forward to proposals for papers on the following themes:
• the hydrological regime of underground rivers (monitoring, flood rise, mineralization, water balance, etc.)
• the structure of active networks and preferential pathways (dye-tracing tests, delineation of catchment, faulting and geometry of active networks)
• Lessons learned from underground dives to the knowledge of the drowned karst (channel morphology, sedimentation, speleothems)
• in situ (underground) observation of flows through the epikarst
• deep karst (hypogenic), hydrothermalism and its imprint in ancient caves
• coastal karst and undersea springs
• highlighting of past climate change events
• modeling hydrogeology of these non-linear and non stationary systems
• building water intakes inside caves: underground dams or boreholes
This list is not exhaustive. If other topics are the subject of several communications, they will also be incorporated into a dedicated session.