The 30 October 2020, MW = 7.0, Samos earthquake: aftershock relocation, slip model, Coulomb stress evolution and estimation of shaking

We study the major MW = 7.0, 30 October 2020, Samos earthquake and its aftershocks, by calculating improved locations using differential travel times waveform cross-correlations. image rupture of mainshock local strong motion data, we examine Coulomb stress evolution prior to mainshock, as well coseismic changes. Lastly, estimate produced shaking all available information from data testimonies. Earthquake relocations reveal activation E-W oriented Kaystrios fault, in North basin with a possible extension West. The kinematic inversion suggests non-uniform bilateral on ∼60 km × ∼20 fault area, main propagating towards West maximum slip up approximately 2.5 m. Improved aftershock sequence are anti-correlated areas surface. Similarly, change calculations show that only off-fault clusters located within lobes increasing positive static This observation is consistent assuming area either uniform slip, or variable according obtained model. Both scenarios indicate typical patterns for normal orientation, ∆CFF increments expanding orientation. In case model, both negative changes slightly larger values compared Finally, Modified Mercalli Intensities based model this intensity (VII +) along northern coast Ιsland. Spectral acceleration at 0.3 s period also demonstrate damaging situation Izmir.