Stiff soil amplification effects in the 7 September 1999 Athens (Greece) earthquake

Bouckovalas, GD; Kouretzis, GP

dc.contributor.author	Bouckovalas, GD	en
dc.contributor.author	Kouretzis, GP	en
dc.date.accessioned	2014-03-01T01:17:08Z
dc.date.available	2014-03-01T01:17:08Z
dc.date.issued	2001	en
dc.identifier.issn	0267-7261	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/14371
dc.subject	Athens earthquake	en
dc.subject	Seismic codes	en
dc.subject	Site characterization	en
dc.subject	Soil amplication	en
dc.subject.classification	Engineering, Geological	en
dc.subject.classification	Geosciences, Multidisciplinary	en
dc.subject.other	Earthquakes	en
dc.subject.other	Geology	en
dc.subject.other	Seismology	en
dc.subject.other	Geotechnical conditions	en
dc.subject.other	Soils	en
dc.subject.other	amplification	en
dc.subject.other	earthquake	en
dc.subject.other	seismic response	en
dc.subject.other	soil dynamics	en
dc.subject.other	strong motion	en
dc.subject.other	Greece	en
dc.title	Stiff soil amplification effects in the 7 September 1999 Athens (Greece) earthquake	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/S0267-7261(01)00045-8	en
heal.identifier.secondary	http://dx.doi.org/10.1016/S0267-7261(01)00045-8	en
heal.language	English	en
heal.publicationDate	2001	en
heal.abstract	The Athens, Greece, earthquake of 7 September 1999 provided a number of reliable strong motion recordings and well-defined patterns of damage at sites with known geological and geotechnical conditions. Joint evaluation of this evidence shows that the very stiff soils of the Athens basin, compared to the nearby outcropping soft rocks, have amplified the peak horizontal acceleration by an average of 40% or more and have shifted elastic response spectra to higher periods. US and the European seismic code provisions (NEHRP-97 and EC-8), place stiff soils and soft rocks at the same site category and consequently fail to predict these adverse effects. A larger number of site categories and new site coefficients that depend on the seismic excitation frequency appear necessary in order to overcome this deficit of the codes. (C) 2001 Elsevier Science Ltd. All rights reserved.	en
heal.publisher	ELSEVIER SCI LTD	en
heal.journalName	Soil Dynamics and Earthquake Engineering	en
dc.identifier.doi	10.1016/S0267-7261(01)00045-8	en
dc.identifier.isi	ISI:000171838000003	en
dc.identifier.volume	21	en
dc.identifier.issue	8	en
dc.identifier.spage	671	en
dc.identifier.epage	687	en