SEISMIC SOURCES AND MAIN SEISMIC FAULTS IN THE AEGEAN AND SURROUNDING AREA
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Scordilis, E.M.
Karakaisis, G.F.
Papazachos, C.B.
A seismic source is defined, in the present work, as the part of the seismogenic layer of theearth’s crust with a circular horizontal dimension (E, R), where E is the epicenter of the largestearthquake (mainshock) ever occurred in this seismic source and radius equal to the half faultlength of this largest earthquake (R=L/2). In addition to foreshocks and aftershocks othersmaller mainshocks occur in other smaller faults of this source or in parts of the main fault.All available historical and instrumental data concerning strong (M³6.0) shallow (h≤60 km) andintermediate depth (60km<h≤100km) shocks which occurred in the Aegean area between 464B.C. and 2008 are used in the present work in an attempt to identify the seismic sources in thisarea, as well as to determine the basic parameters of the largest fault in each source. A particularprocedure is followed to identify 155 seismic sources in this area and determine thebasic parameters of the largest fault in each source. Declustering has been also performed todefine mainshocks in the Aegean area and the completeness of this mainshock catalogue hasbeen determined. Results are summarized in table (1).
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