Testing Sentinel-1A Data in Landslide Monitoring: A Case Study from North-Eastern Italian Pre-Alps

摘要: Open image in new window The main aim of this study is to test the effectiveness Sentinel-1A Synthetic Aperture Radar (SAR) data monitoring scarcely urbanized slopes affected by slow-moving instabilities. To end, geological and geomorphological surveys were carried out, satellite SAR processed a GPS network system was installed. area, named Rovegliana, located North-Eastern sector Italian pre-Alps. Rovegliana are covered eluvial, colluvial landslide debris deposits which mainly superficial phenomena such as creep soil slips. In situ Advanced Differential Interferometry (A-DInSAR) processing ERS, ENVISAT COSMO Sky-MED pointed out that instabilities active with constant velocities up 10 mm/year. Only central eastern sectors area subjected an acceleration after exceptional rainfall event occurred November 2010. started October 2015 has been implemented through four campaigns made high precision geodetic measures possible deformations 22 vertices Global Navigation Satellite System (GNSS) static network. These have connected obtain robust system. Comparing results from historical interferometric data, measurements interferometry Sentinel acquired period 2015–2016, make it verify if characterized short revisiting time, can be used useful tool define spatio-temporal evolution recorded instabilities, overcoming limits applying techniques caused temporal decorrelation due presence vegetation cover, increasing possibility significant information about dynamics data. Moreover, we expect number planned acquisitions will improve accuracy deformation measurements.