Enhanced landslide investigations through advanced DInSAR techniques: The Ivancich case study, Assisi, Italy

摘要: Abstract We extensively exploit advanced Differential SAR Interferometry (DInSAR) techniques for enhanced landslide investigations. focus on the Ivancich area, Assisi, Central Italy, which is affected by a deep-seated investigated through in-situ surveys. For this large data sets of acquisitions were collected C-band ERS-1/2 and ENVISAT sensors (from April 1992 to November 2010), X-band radars COSMO-SkyMed (CSK) constellation December 2009 February 2012). concentrate DInSAR technique referred as Small BAseline Subset (SBAS) approach, benefiting its capability generate deformation time series at full spatial resolution from multi-sensor data. This allows us present one first examples area — exceeding 18 years. The results allowed characterizing long-term behaviour landslide, identifying sectors unstable slope different dynamics. Analysis CSK set, characterized reduced revisit improved resolution, resulted in 15-time larger point density with respect ERS-ENVISAT measurements, allowing investigate nearly all buildings (and, many cases, portions buildings) area. Lastly, we an innovative modelling approach based effective integration measurements traditional geological geotechnical information, providing deeper insights kinematical evolution landslide. consider our analysis prototype example that can be extended conditions, significant advances understanding ground deformations induced active landslides.