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Palaeoseismological investigations of the Aigion Fault (Gulf of Corinth, Greece)

Francis Lemeille(a), Fanis Chatoupis(b), Michaili Foumelis(b), Detlev Rettenmaier(c), Ingmar Unkel(d), Luca Micarelli(e), Isabelle Moretti(e), Chantal Bourdillon(f), Claude Guernet(g) and Carla Müller(h)

Comptes Rendus Geosciences
Volume 336, Issues 4-5 , March 2004, Pages 425-434

Document type > *Article de revue

Keywords > earthquakes, paleoseism

Research Unit > IRSN/DEI/SARG/BERSSIN

Authors > LEMEILLE Francis

Publication Date > 01/03/2004

Summary

We performed palaeoseismological investigations along the Aigion Fault, one of the main faults that bound the southern side of the Corinth Gulf. The mapped trace of the Aigion Fault onland is about 8 km long and may extend as much as 14 km if one includes its offshore trace. We made detailed studies at two sites adjacent to the Meganitas River. Although dating of faulted sediments was a bit problematic, we present a preliminary estimate of the faults short-term slip rate and recurrence interval. Slip rates range from 1.6 to 4.3 mm yr−1, with a maximum up to 6.3 mm yr−1. Three surface faulting events occurred in the seven centuries prior to 1888 AD, yielding an average (maximum) recurrence interval of 360 yr.

a Istituto Nazionale di Geofisica e Vulcanologia, Via di Vigna Murata 605, 00143, Roma, Italy
b University of, Patras, Greece
c IRSN, CEA, 60–68, av. du Général-Leclerc, BP 6, 92265, Fontenay-aux-Roses cedex, France
d Aristotle University of, Thessaloniki, Greece


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