Monthly Archives: November 2020

New paper in Journal of Applied Geophysics

Delforge, D., Watlet, A., Kaufmann, O., Van Camp, M., Vanclooster, M., “Time-series clustering approaches for subsurface zonation and hydrofacies detection using a real time-lapse electrical resistivity dataset”, Journal of Applied Geophysics (2020). 10.1016/j.jappgeo.2020.104203.

This article studies how to analyse automatically the numerous data series resulting from the measurements of the variations in the electrical resistivities of the soil on the site of the Lorette Cave (Rochefort). These variations, which inform us about the modifications of the water content of the subsoil, were described in their hydrogeological context by A. Watlet ( Watlet, A., Kaufmann, O., Triantafyllou, A., Poulain, A., Chambers, J., Meldrum, P., Wilkinson, P., Hallet, V., Quinif, Y., Van Ruymbeke, M., Van Camp, M., Imaging groundwater infiltration dynamics in the karst vadose zone with long-term ERT monitoring, Hydrology and Earth System Sciences (2018). 10.5194/hess-22-1563-2018).

Identification as a function of the depth Z and of the length X of the monitoring profile of zones with variable variations in electrical resistivity. These areas depend on the geological characteristics. For example, the brown area represents a faulted zone where water is quickly drained to the caves.