Validation of 3D basin model for earthquake ground motion simulation using seismic interferometry
| Project/Area Number |
22310108
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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 | 一般 |
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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 東京工業大学, 大学院・総合理工学研究科, 教授 (00212291)
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| Project Period (FY) |
2010 – 2012
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| Project Status |
Completed (Fiscal Year 2012)
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| Budget Amount *help |
¥17,030,000 (Direct Cost: ¥13,100,000、Indirect Cost: ¥3,930,000)
Fiscal Year 2012: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2011: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2010: ¥10,010,000 (Direct Cost: ¥7,700,000、Indirect Cost: ¥2,310,000)
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| Keywords | 地震動 / 地震波干渉法 / 表面波 / 長周期地震動 / Ｓ波速度 / 微動 / 関東平野 / 相互相関関数 / グリーン関数 / S波速度 |
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| Research Abstract |
Applicability of seismic interferometry in validating 3D S-wave velocity model of a large basin for estimation of long-period ground motion was investigated in this study. We conducted long-term microtremor observation in Tokyo Metropolitan area and Suruga bay area for estimation of cross correlations. Surface waves of Green’s function were extracted from the correlations. The 3D model was modified from group velocity tomographic analysis of the surface waves. We simulated earthquake ground motions observed during a moderate event and found that the observed ground motion features were reconstructed better with the revised model than the previous model.
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Report
(4 results)
Research Products
(68 results)
