The use of radar interferometry in landslide monitoring

This paper presents some specific considerations on the use of SAR interferometry to landslide studies. Both space‐borne and ground‐based methods are briefly reviewed and main issues in the application of them discussed on the basis of real examples. The large literature on the subject seems to suggest that PSI techniques have a large field of possible applications ranging from landslide mapping to monitoring. Limitations are mainly linked to revising time, thus time resolution and can be overcome, for selected priority unstable slope, by the implementation of GB‐InSAR early warning systems, where SAR methods must always be complemented by traditional (or new technology) in‐situ direct measurements, including underground tools such as inclinometers.