Attenuation characteristics of peak ground acceleration from fault trace of the 1999 Kocaeli (Turkey) earthquake and comparison of spectral acceleration with seismic design code |
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| Authors: | Yoshimitsu Fukushima Onur Köse Tekin Yürür Philippe Volant Edward Cushing Richard Guillande |
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| Institution: | (1) Izumi Research Institute, Shimizu Corporation, Japan;(2) Department of Geological Engineering, Remote Sensing Laboratory, Hacettepe University, 06532 Ankara, Turkey;(3) Institute de Protection et de Surete Nucleaire, France;(4) Geosciences Consultants, France |
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| Abstract: | The 17 August 1999 Kocaeli earthquake in Turkey produced a majorsurface rupture. We traced this surface rupture from Gölcük toDüzce and located it accurately by using GPS. The closest distancefrom the surface rupture to the strong motion observation sites weredetermined. Then the attenuation characteristics of the observed peakground acceleration were compared with the attenuation relation given byFukushima and Tanaka (1992), which is suitable for the near-fault zone inJapan and gives results that closely match data recorded during the 1995Hyogo-ken Nanbu earthquake in Japan. Although this attenuation relationwas developed for Japan, we found that it agreed well with the KOCAELIearthquake. Furthermore, the observed spectral acceleration of 5%damping was compared with the building design code of Turkey and theobserved level was lower than the code. |
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| Keywords: | attenuation design code ground acceleration Kocaeli earthquake spectral acceleration |
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