Microtremor Measurements for the Microzonation of Dinar |
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| Authors: | A M Ansal R Iyisan H Güllü |
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| Institution: | (1) Department of Geophysical Engineering, Mustafa Kemal University, 31200 Antakya, Turkey;(2) Department of Geophysical Engineering, Canakkale Onsekiz Mart University, 17020 Canakkale, Turkey;(3) Department of Geophysical Engineering, Cumhuriyet University, 58140 Sivas, Turkey;(4) Department of Civil Engineering, Mustafa Kemal University, 31200 Antakya, Turkey; |
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| Abstract: | v--vThe geotechnical site conditions in Dinar town located in western Turkey were investigated after the 1995 Dinar earthquake based on borings, in situ penetration tests, seismic wave velocity measurements, and microtremor records. The variation of damage distribution within the town was evaluated with respect to 23 district damage ratios calculated, based on the detailed damage survey conducted by the General Directorate of Disaster Affairs. Site amplifications were estimated from microtremor spectral ratios and microzonation was performed using a GIS methodology. The results of in situ penetration tests and seismic wave velocity measurements as well as the damage distribution were compared with the amplification zonation obtained from microtremor records. The results indicate the applicability of microtremor spectral ratios for assessing the local site conditions and site amplifications. |
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