| Project/Area Number |
21340129
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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 |
Solid earth and planetary physics
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| Research Institution | Kochi University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
SAKAGUCHI Arito 独立行政法人海洋研究開発機構, 地球内部変動研究センター, 技術研究主任 (80304666)
TSUJI Takeshi 京都大学, 工学研究科, 助教 (60455491)
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| Project Period (FY) |
2009 – 2011
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| Project Status |
Completed (Fiscal Year 2011)
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| Budget Amount *help |
¥18,070,000 (Direct Cost: ¥13,900,000、Indirect Cost: ¥4,170,000)
Fiscal Year 2011: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2010: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2009: ¥12,220,000 (Direct Cost: ¥9,400,000、Indirect Cost: ¥2,820,000)
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| Keywords | 内部変動 / 物性 / 沈み込みプレート境界地震発生帯 / 付加体 / 弾性波速度物性 / 四万十帯 / 南海トラフ / 続成過程 |
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| Research Abstract |
In this study, we examined distribution of elastic properties of sediments and the processes of the change in physical properties in ancient seismogenic plate interface exposed on-land. The study area is the Cretaceous Shimanto Belt, Shikoku. Methods are making equipment for velocity measurements, fieldwork and sampling, and velocity measurements of the sediments. In the results, existence of high fluid pressure along seismogenic fault in Nankai plate interface, differences in lithification processes between lithologies, and fluid concentration in the seismogenic depth due to clay mineral dehydration are revealed.
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