Co-seismic and post-seismic deformation, field observations and fault model of the 30 October 2020 Mw = 7.0 Samos earthquake, Aegean Sea

On 30 October 2020, a large Mw = 7.0 earthquake occurred north of the island Samos, Greece. Here we present characteristics seismic fault (location, geometry, geodetic moment) as inferred from processing data (InSAR and GNSS). We use InSAR displacement Sentinel-1 interferograms (ascending orbit 29 descending 36) GNSS offsets fourteen (14) stations in Greece Turkey to invert for parameters. Our inversion modelling indicates activation normal offshore Samos with length 40 km, width 15 average slip 1.7 m, moderate dip-angle (37°) dip-direction towards North. The is located immediately of, adjacent top ~ 0.6 km below surface, 1 at its closest island. Near fault, caused permanent uplift up 10 cm exception coastal strip along part northern shore that subsided 2–6 cm. co-seismic horizontal motion station SAMO was 35.6 south 3 west. A post-seismic signal (22–33% on vertical component) observed SAMU, time constant days. effects included liquefaction, rock falls, slides, road cracks deep-seated landslides, all due strong ground associated down-slope mobilization soil cover loose sediments.