Effects of local soil conditions on the topographic aggravation of seismic motion: Parametric investigation and recorded field evidence from the 1999 Athens earthquake

Assimaki, D; Gazetas, G; Kausel, E

dc.contributor.author	Assimaki, D	en
dc.contributor.author	Gazetas, G	en
dc.contributor.author	Kausel, E	en
dc.date.accessioned	2014-03-01T01:22:16Z
dc.date.available	2014-03-01T01:22:16Z
dc.date.issued	2005	en
dc.identifier.issn	0037-1106	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/16507
dc.subject.classification	Geochemistry & Geophysics	en
dc.subject.other	Earthquakes	en
dc.subject.other	Elastic waves	en
dc.subject.other	Geometry	en
dc.subject.other	Soils	en
dc.subject.other	Wave propagation	en
dc.subject.other	Ricker wavelets	en
dc.subject.other	Soil conditions	en
dc.subject.other	Topographic aggravation	en
dc.subject.other	Topography effects	en
dc.subject.other	Seismology	en
dc.subject.other	damage	en
dc.subject.other	earthquake	en
dc.subject.other	site effect	en
dc.subject.other	Eastern Hemisphere	en
dc.subject.other	Eurasia	en
dc.subject.other	Europe	en
dc.subject.other	Greece	en
dc.subject.other	Southern Europe	en
dc.subject.other	World	en
dc.title	Effects of local soil conditions on the topographic aggravation of seismic motion: Parametric investigation and recorded field evidence from the 1999 Athens earthquake	en
heal.type	journalArticle	en
heal.identifier.primary	10.1785/0120040055	en
heal.identifier.secondary	http://dx.doi.org/10.1785/0120040055	en
heal.language	English	en
heal.publicationDate	2005	en
heal.abstract	During the 1999 Athens earthquake, the town of Adàmes, located on the eastern side of the Kifissos river canyon, experienced unexpectedly heavy damage. Despite the particular geometry of the slope that caused significant motion amplification, topography effects alone cannot explain the uneven damage distribution within a 300-m zone parallel to the canyon's crest, which is characterized by a rather uniform structural quality. In this article, we illustrate the important role of soil stratigraphy and material heterogeneity on the topographic aggravation of surface ground motion. For this purpose, we first conduct an extensive time-domain parametric study using idealized stratified profiles and Gaussian stochastic fields to characterize the spatial distribution of soil properties, and using Ricker wavelets to describe the seismic input motion; the results show that both topography and local soil conditions significantly affect the spatial variability of seismic motion. We next perform elastic two-dimensional wave propagation analyses based on available local geotechnical and seismological data and validate our results by comparison with aftershock recordings.	en
heal.publisher	SEISMOLOGICAL SOC AMER	en
heal.journalName	Bulletin of the Seismological Society of America	en
dc.identifier.doi	10.1785/0120040055	en
dc.identifier.isi	ISI:000230016400020	en
dc.identifier.volume	95	en
dc.identifier.issue	3	en
dc.identifier.spage	1059	en
dc.identifier.epage	1089	en