| Project/Area Number |
12574017
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 海外学術 |
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| Research Field |
Natural disaster science
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| Research Institution | Tokyo Institute of Technology |
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Principal Investigator |
YAMANAKA Hiroaki Tokyo Institute of Technology, Dept.of Environmental Science and Tech., Assoc.Prof., 大学院・総合理工学研究科, 助教授 (00212291)
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| Co-Investigator(Kenkyū-buntansha) |
SEO Kazuoh Tokyo Institute of Technology, Dept.of Built Environ., Prof, 大学院・総合理工学研究科, 教授 (30089825)
KURITA Katsumi Tokyo Institute of Technology, Dept.of Environ.Sci.and Tech., Research Associate, 大学院・総合理工学研究科, 助手 (90282871)
TAKEMURA Masayuki Kajima, 小堀研究室, 次長
KUDOH Kazuyoshi The University of Tokyo, Assoc.Prof., 地震研究所, 助教授 (50012935)
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| Project Period (FY) |
2000 – 2002
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| Project Status |
Completed (Fiscal Year 2002)
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| Budget Amount *help |
¥9,100,000 (Direct Cost: ¥9,100,000)
Fiscal Year 2002: ¥2,400,000 (Direct Cost: ¥2,400,000)
Fiscal Year 2001: ¥2,300,000 (Direct Cost: ¥2,300,000)
Fiscal Year 2000: ¥4,400,000 (Direct Cost: ¥4,400,000)
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| Keywords | Kocaeli earthquake / Turkey / Adapazari / Duzce / earthquake observation / strong ground motion / site effects / microtremors |
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| Research Abstract |
Heavy damage was experienced in many cities in the north-western part of Turkey during the Kocaeli earthquake and the Duzce earthquake in 1999. Although several strong ground motion records were obtained in the area, there are not enough records in the heavy damage area to understand causes of the damage. Furthermore, subsurface structural data that are very important in assessment of ground motion characteristics are not well defined in the heavy damage area.
In this study, we conducted single-point measurements and array measurements of microtremors in Adapazari and Duzce areas for estimation of site amplification factors. First, we estimated subsurface structure using microtremor data from the array and single-point measurements. We also conducted earthquake observation for small earthquakes in Adapazari. The models in Adapazari were examined in travel time analysis of initial P- and S-waves using earthquake data from small events. Then, we discussed ground motion amplification characteristics calculated from the estimated models.
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