Hydrogeophysics typically consists in the combination of hydrological and geophysical methods for the understanding of a hydrogeological system. Landslides are typical water catchments which benefit from such a combined approach. Among key parameters that can provide time-lapse sections of the underground and help the modeling, we consider the electric conductivity for its sensitivity to soil water content. In the present work, we consider a new electrical monitoring experiment on the Super-Sauze landslide, running over a longer period for the observation of natural rainfall effect. We present experimental set up: the GEOMON4D device developed by the Austrian Geological Survey, and several sensors that measure continuously the parameters affecting apparent electrical resistivity. Then we show the first results in terms of electric resistivity but also streaming-potential (SP) and discuss about perspectives. The first results indicate that apparent and inverted resistivities show low variations correlated with rainfall and large variations correlated with the groundwater table level. The SP data could be used to provide information on the infiltration processes and top soil saturation. We plan to use the SP data to understand the complex relation between rainfall and soil water content in the top soil.


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