Effects of basin edge on the distribution of damage in 1995 Dinar, Turkey earthquake

An earthquake of magnitude M L=5.9 occurred in Dinar, a town located at the edge of an alluvial basin in Southeast Anatolia, Turkey. Inflicted structural damage throughout the town was highly concentrated in a region located on the alluvium and adjacent to the rock outcrop bounding the eastern side...

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Bibliographic Details
Published inSoil dynamics and earthquake engineering (1984) Vol. 22; no. 4; pp. 335 - 345
Main Authors Bakir, B S, Ozkan, M Y, Ciliz, S
Format Journal Article
LanguageEnglish
Published Oxford Elsevier Ltd 01.06.2002
Elsevier Science
Subjects
Basin effects
Earth sciences
Earth, ocean, space
Earthquakes, seismology
Engineering and environment geology. Geothermics
Exact sciences and technology
Internal geophysics
Natural hazards: prediction, damages, etc
Site effects
Site response studies
Middle East
Turkey
Anatolia
Site effects
Basin effects
Site response studies
sedimentary basins
damage
outcrops
geologic sections
neotectonics
earthquakes
spatial distribution
acceleration
seismic response
tectonic maps
wave amplification
Asia
buildings
alluvium
magnitude
site effects
statistics
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Summary:An earthquake of magnitude M L=5.9 occurred in Dinar, a town located at the edge of an alluvial basin in Southeast Anatolia, Turkey. Inflicted structural damage throughout the town was highly concentrated in a region located on the alluvium and adjacent to the rock outcrop bounding the eastern side of the town. As an attempt to explain this discrepancy, possible effects of the edge of basin on which the town is located were investigated through 1D and 2D response analyses. Response spectra, computed at distinct locations of the town were contrasted to the building damage statistics of the three zones identified in the town. It is found that the 1D analyses considerably underpredict the spectral response in the heavily damaged area. Differences between the spectral responses obtained from the two approaches diminish with increasing distance from the rock outcrop. These results, which indicate that the 2D amplification was significant over a distance from the edge of the basin, provide a meaningful explanation for the observed distribution of damage throughout the town.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0267-7261
1879-341X
DOI:10.1016/S0267-7261(02)00015-5