Geophysical Monitoring of Landslides: State-of-the Art and Recent Advances

Geophysical monitoring of landslides has developed strongly in recent years with the use of electrical resistivity imaging on the one hand, and the application of techniques based on continuous seismic recordings on the other hand. The paper resituates these developments within the general framework of the application of geophysical methods to landslides and focus on the definition of relevant geophysical parameters that can be precursors to activation or reactivation phases. Four recent case studies from the literature illustrate the potential and limitations of geophysics for landslide monitoring. Development prospects, especially for integration into early warning systems, are discussed.