The epicentral fingerprint of earthquakes marks the coseismically activated crustal volume

InSAR images allow to detect the coseismic deformation, delimiting epicentral area where larger displacement has been concentrated. By inspecting fringe patterns it is commonly recognized that, for dip-slip faults, most deformed elliptical, or quadrilobated strike-slip faults. This coincides with surface projection of volume coseismically mobilized in hanging wall thrusts and normal crustal walls adjacent In present work we analyzed a dataset 32 seismic events, aiming compare deformation fields terms shape, spatial extents, amount rock volumes, corresponding earthquake type magnitudes. The dimension detected by scales magnitude earthquake, found that M ≥ 6 always than 100 km2, increasing more 550 km2 ≈ 6.5. Moreover, comparison between Peak Ground Accelerations documents shaking within areas suffering higher vertical deformation. As well established, epicenter rarely shaking. Instead, macroseismic intensity often corresponds (either downward upward), apart local site amplification effects. Outside this area, drastically lower, determining strong attenuation waves decrease peak ground acceleration surrounding far-field area. Indeed, segment activated fault constrains oscillations are larger, allowing contemporaneous maximum freedom degree affected horizontal shaking, i.e., near-field area; therefore, active, they move contemporaneously crossed (active active domain) trapped constructive interference expected, whereas mainly fixed passively (passive passive domain). All these considerations point out earthquakes powerful tool representing fingerprint largest taken place during an earthquake. Seismic hazard assessments should primarily rely on expected future domains.