Landlside back monitoring and forecasting by using PSInSAR: technique: the case of Naso (Sicily, southern Italy)

Landlside back monitoring and forecasting by using PSInSAR: technique: the case of Naso (Sicily, southern Italy). The village of Naso (Sicily, southern Italy), for its peculiar geological setting, was affected by several landslide phenomena (rockfalls, complex landslides) during the first months of the 2010. The village is located on top of hard-brittle Quaternary deposits (calcareous sandstones), lying on a soft-plastic substratum. These phenomena represent a serious risk for the buildings stability and people safety. In order to study the slope instability evolution of this area, satellite Synthetic Aperture Radar (SAR) images, acquired during the last 20 years, have been processed and analyzed. These data have been acquired by using C-band and X-band sensors. Results highlighted that the 2010 events was preceded by several acceleration periods and that the slope is still affected by ground deformation.