THE GALAXIDI EARTHQUAKE OF 18 NOVEMBER 1992 - A POSSIBLE ASPERITY WITHIN THE NORMAL-FAULT SYSTEM OF THE GULF OF CORINTH (GREECE)

The Galaxidi earthquake that occurred in the Gulf of Corinth on 18 Nov ember 1992 was not followed by a noticeable aftershock sequence, a fac t that was also observed for the 1965 Eratini event in the same area. The temporary network of 35 stations that we installed 5 days after th e mainshock did not help to identify a cluster of activity related to the mainshock. In a section across the epicentral zone, the focal mech anism of the mainshock and the distribution of a few aftershocks defin e a plane dipping north, consistent with the nearby Helike fault. We p ropose that the Galaxidi earthquake was related to an asperity located between the Helike and Xilokastro faults.