As part of the monitoring activities of Etna activity carried out by the Catania Section - Etna Observatory of INGV (National Institute of Geophysics and Volcanology) the SAR (Synthetic Aperture Radar) images of the following two passages of the Sentinel satellite were analyzed 1 of ESA (European Space Agency), part of the Copernicus system:
The view geometry of the sensor is descending (resuming point east-south-east of Etna, with an inclination of about 40°).
The result of the in-phase interferometric processing of the SAR data attached here (1 fringe = 28 mm of displacement along the line of sight) highlights a complex deformation field that affects the entire volcano. In detail, the following structures are noted:
The Fiandaca-Pennisi, Pernicanca and Ragalna faults were activated during the seismic swarm still recorded by the Etna networks.
Further analyzes will be conducted in the coming days, also with data acquired in ascending geometry, in order to integrate the interferometric analysis with the GPS measurements and refine the preliminary result to provide a more accurate interpretation of the volcano's deformation field.
#ingv #observatoryetneo #sentinel1 #sar #etna
Image - Result of in-phase interferometric processing of SAR data