A study on modeling S-wave velocity structure of deep basin for estimation of long-period ground motion
| Project/Area Number |
19310115
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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 Tokyo Institute of Technology, 大学院・総合理工学研究科, 准教授 (00212291)
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| Co-Investigator(Kenkyū-buntansha) |
YAMADA Nobuyuki 福岡教育大学, 教育学部, 准教授 (80334522)
MOTOKI Kentaro 東京工業大学, 大学院・総合理工学研究科, 助教 (60334520)
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| Project Period (FY) |
2007 – 2009
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| Project Status |
Completed (Fiscal Year 2009)
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| Budget Amount *help |
¥18,850,000 (Direct Cost: ¥14,500,000、Indirect Cost: ¥4,350,000)
Fiscal Year 2009: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2008: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2007: ¥10,400,000 (Direct Cost: ¥8,000,000、Indirect Cost: ¥2,400,000)
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| Keywords | 地震動 / やや長周期 / S波速度構造 / 深部地盤 / 微動探査 / 逆解析 / 地震波干渉法 / 地震動シミュレーション / 地盤震動 / 関東平野 / やや長期的 |
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| Research Abstract |
This study investigates modeling of S-wave velocity structure of deep sedimentary layers for prediction of strong ground motion in seismic hazard estimation. We proposed a waveform inversion method to deduce an S-wave velocity profile using S-wave part of earthquake records. We also proposed a joint inversion method of the S-wave part, surface-wave phase velocity, receiver function, and coda H/V spectra to S-wave velocity with high accuracy. It is also effective in modeling S-wave velocity to use amplification factors estimated from earthquake records and group velocity from seismic interferometric processing of long-term continuous microtremor data. We finally validated an S-wave velocity model with comparison between calculated and observed earthquake motion.
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Report
(4 results)
Research Products
(50 results)
