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The Corinth Gulf Soft Soil Array (CORSSA) to study site effects

Kyriazis Pitilakis (a), Konstantinos Makropoulos(b), Pascal Bernard(c), Francis Lemeille(d), Hélène Lyon-Caen(e), Catherine Berge-Thierry(d), Theodora Tika(a), Maria Manakou(a), Dimitios Diagourtas(b), Dimitrios Raptakis(a), Polyxeni Kallioglou(a), Konstantia Makra(a), Dimitrios Pitilakis(a) and Fabian Bonilla(d)

Comptes Rendus Geosciences
Volume 336, Issues 4-5 , March 2004, Pages 353-365

Document type > *Article de revue

Keywords > earthquakes, rift/fault, site effect

Research Unit > IRSN/DEI/SARG/BERSSIN

Authors > BERGE-THIERRY Catherine, BONILLA Fabian, LEMEILLE Francis

Publication Date > 01/11/2004

Summary

This paper describes the development of the CORSSA array (CORinth Soft Soil Array) in the framework of the European project CORSEIS, which takes place in the highly seismic region of Aegion, in the Gulf of Corinth, Greece. An array of surface and down-hole accelerometers and pore pressure transducers is deployed in the hanging wall of the Aegion Fault, an active normal tectonic feature that crosses Aegion city. The scope of this array is to study the physics of wave propagation, the non-linear soil behaviour, liquefaction phenomena and the effects of surface geology on strong ground motion. The surface geology is well constrained by a detailed geotechnical and geophysical survey including dynamic soil tests. Typical recordings and preliminary 1D SH ground response analyses are presented herein, illustrating the importance of the experimental array to study complex site effects including non-linear phenomena in the vicinity of faults and topographic relief.

a Laboratory of Soil Mechanics and Foundation Engineering, Civil Engineering Dept., Aristotle University of Thessaloniki (LSMFE–AUTH), 54124, Thessaloniki, Greece
b Seismological Laboratory, National Kapodistrian University of Athens (NKUA), Panepistimioupolis, 15784, Zografou, Greece
c Department of Seismology, Institut de physique du Globe de Paris (IPGP), 4, place Jussieu, 75252, Paris cedex 05, France
d Bureau d'évaluation des risques pour la sûreté des installations nucléaires (BERSSIN–IRSN), Institut de radioprotection et de sûreté nucléaire, BP 17, 92262, Fontenay-aux-Roses, France
e Department of Geology, École normale supérieure (ENS), 24, rue Lhomond, 75231, Paris cedex 05, France


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