A multi-sensor approach for monitoring an active volcanic area: The 2011–2014 eruptive phase of Mount Etna

A multi-sensor approach has been adopted to investigate the summit area of Mount Etna that from January 2011 has significantly changed due to the intense volcanic activity from the New South East Crater. WorldView and Pleiades stereopairs were processed to obtain high resolution Digital Elevation Models and orthophotos used to update the topography of the volcano at over 3000 m of elevation. COSMO-SkyMed interferometric pairs provided additional data to attempt a reconstruction of the evolution of the New South East Crater between June 2011 and October 2014. The information retrieved from the optical and Synthetic Aperture Radar datasets were integrated with in-situ measurements and volcanological and geotechnical information thus contributing to the assessment of hazard scenarios.