Permanent geoelectrical monitoring, using the GEOMON 4D instrumentation in combination with high resolution displacement monitoring by means of the D.M.S. system, was performed at two active landslide areas: Ampflwang/Hausruck in Austria, and Bagnaschino in Italy. These sites are part of the Austrian geoelectrical monitoring network, which currently comprises six permanently monitored landslides in Europe. Within the observation intervals, several displacement events, triggered by intense precipitation, were monitored and analysed. All of these events were preceded by a decrease of electric resistivity. The application of an innovative 4D inversion algorithm made it possible to investigate the potential processes which led to the triggering of these events. We conclude that resistivity monitoring can significantly help in the investigation of the causes of landslide reactivation. Since the results also contribute to the extrapolation of local displacement monitoring data to a larger scale, resistivity monitoring can definitely support decision-finding in emergencies.techniques, long-term continuous monitoring of deformation and triggering factors and by establishing early-warning systems/centres. The most commonly used early-warning parameters are pore pressure and displacement. However, recent research has shown that other parameters exist, which might give indications of impending triggering before an actual displacement is measurable.The geoelectrical method (direct current DC) has recently been established as a routine geophysical method to investigate subsurface geometry and structural pattern of landslides in Europe (Mauritsch et al.