Monitoring seismicity with local on/offshore seismic networks is an important tool for seismic hazard estimation and preparation of microzonation maps for engineering feasibility studies.

The distribution of hypocenters allows the identification of active faults and their mechanism, and helps to understand active tectonic processes.

The shallow recorded seismicity is associated with the deformation and opening of the Corintiakos Gulf, one of the most rapidly deformating areas of Greece. The deep seismicity, extending to a minimum of 100km depth is linked to the interaction of the subducted oceanic, Ionian Sea lithosphere with the mantle below Corinthia, Saronikos Gulf and western Attica.

All the rest of the seismicity is crustal to the east controlled by transtension in the central and south Aegean Sea and to the west by normal faulting along the Corinthia rift due to rearrangement of crustal blocks, escaping the compression along the western Hellenides.