SAR interferometry time series analysis of ground displacement for Piton de la Fournaise volcano, Reunion Island

We performed a detailed time series Interferometric Synthetic Aperture Radar (InSAR) analysis using an enhanced Small Baseline Subset (SBAS) approach on COSMO-SkyMed data acquired between 2011 and 2014 over Piton de la Fournaise volcano in the Réunion Island. 2-Dimensional components of mean velocities were calculated from ascending and descending orbits. Clear time-dependent displacement was observed both at the Central Cone and on the Eastern Flank. Our results show the persistence of large-scale downslope displacement of the Eastern Flank triggered by the March-April 2007 eruption.