In July 1991, a strong motion network consisting of 8 SSA-1 accelerometric stations, was installed around the western part of gulf of Corinth, (C. Greece), in order to provide the basis for strong ground motion attenuation and site effect studies. Until now almost 550 3-component accelerograms from 130 events with epicentral distances ranging from 1 to 100 km having local Richter magnitudes ranging from 2.5 to 5.3 R, with maximum horizontal peak-to-peak acceleration values ranging from 2 to 360 milli-g, were recorded. Three of the stations were installed in the southern part of gulf of Corinth on Plio-quaternary sediments while the other five were installed on the northern part on alpine formations. The eighteen events which provided satisfactory record quality at most of the stations since 1991, have been analysed in order to define the importance of the site effects in a very geologically complex area like the gulf of Corinth.The examination of the corrected accelerograms and corresponding response spectra at different stations shows relatively large variations in peak acceleration values as well as in frequency content at sites with different geological formations with comparable epicentral distances, underlining the importance of considering the role of site conditions in aseismic design studies.
Weitere Kapitel dieses Buchs durch Wischen aufrufen
- A Study of Site Effects on Strong Motion Records Obtained from Local Network Around Gulf of Corinth, (Central Greece)
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