DInSAR techniques for monitoring slow-moving landslides

Remote sensing is being frequently applied in recent years to monitor slope instability phenomena. Since satellite images cover wide territories with frequent passages, their use seems to be extremely promising in terms of landslide monitoring. Among the different techniques proposed, the Permanent Scatterers (PS) technique is a multi-interferogram approach for processing SAR data that allows to overcome the limitations of the traditional DInSAR. In the present paper, some preliminary considerations are developed, deriving from the use of the PS technique in a small town of Campania region, Italy, where some slow-moving complex landslides affect the urban area. The SAR data have been relieved from the ERS-1 and ERS-2 sensors of the European Space Agency in the 1992–2001 time span. The SAR data are being compared with field evidence of structural damages to urban buildings and infrastructures, in view of further field-based observations, integrated with classical site monitoring data.