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We analyse SAR and GPS data to constrain the land subsidence induced by natural and anthropogenic activity along the northern Adriatic coasts (Northern Italy). We develop a procedure in order to cross-validate our results by comparing the retrieved independent InSAR measurements with GPS ground displacements. The results show a good agreement between the different geodetic techniques both in terms of deformation rate and time series. We detected several localized subsidence phenomena with rates of about 2–4 mm/yr along the investigated area likely due to aquifer overexploitation, hydrocarbon extraction activities and natural compaction of the sedimentary basin.

The use of SAR data for imaging hazardous events is nowadays a well-consolidated approach. Thanks to the synoptic capabilities of satellite data, their high spatial resolution and high revisit time, fast and accurate analysis can be performed at both regional and local scale. This work presents the results of SAR Interferometry applied to a multi-hazard event induced by the eruption of Etna volcano, occurred in late December 2018. We analyse both the syn-eruptive deformation of volcano edifice and the effects of an induced M w 4.9 earthquake and a small-scale landslide by exploiting ESA Sentinel-1 data. The data highlight a main horizontal displacement of the Etna summit of more than 40 cm and 65 cm along west and east directions, respectively. The earthquake caused about 15 cm displacement toward east and 20 cm toward west. Finally, approximately 5 cm displacement along satellite Line of Sight was observed associated to the landslide.

In this study, multi-frequency Synthetic Aperture Radar Interferometry (InSAR) data are used to constrain the ground deformation due to the August 21st, 2017, Ischia earthquake. InSAR results are the input data to infer the source model of the seismic event. C-band Sentinel-l and X-band COSMO-SkyMed© InSAR results show a displacement pattern in the epicentral area, with a maximum value of ~3.5 cm and a dominant vertical component. Preliminary analytical and numerical models suggest that the retrieved InSAR ground displacements are due to the combination of two phenomena: the tectonic dislocation caused by the slip on the fault plane and the surficial disnlacernent caused by the triggering of shallow landslides.

We exploit C-band Sentinel-1 and L-band ALOS-2 Synthetic Aperture Radar Interferometry (InSAR) data to constrain the seismic source of the $\mathrm{M}_{\mathrm{w}}$ 6.0 intraplate earthquake occurred on May 20, 2016 in the central Australia. It is an uncommon seismic event since it occurred in a region characterized by low seismic activity. The retrieved source modeling revealed that the earthquake nucleated along a NW-SE-oriented reverse fault with a significant strike-slip component.