| Project/Area Number |
23740329
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Solid earth and planetary physics
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| Research Institution | Tohoku University |
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Principal Investigator |
KITA Saeko 東北大学, 大学院・理学研究科, COE フェロー (10543449)
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| Project Period (FY) |
2011 – 2012
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| Project Status |
Completed (Fiscal Year 2012)
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| Budget Amount *help |
¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2012: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2011: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
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| Keywords | 地震現象 / 地震波速度構造トモグラフィー / 国際情報交換 / 北海道 / 島弧－島弧衝突帯 / 地震波速度構造 / 内陸大地震 / 地震波減衰構造 / 造山運動 / 日高衝突帯 / 国際情報交流 / 北海道・日高地方 / 島弧―島弧衝突帯 |
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| Research Abstract |
Using travel time data from both a nationwide dense seismic network and a dense temporary seismic network, we obtain a high-resolution three-dimensional seismic velocity structure beneath the Hokkaido corner. Our results suggest that these two large and anomalously deep inland earthquakes occurred at sharp material boundaries under a northeast-southwest compressional stress field caused by ongoing arc-arc collision process.
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