Subsurface structure and slip-locking pattern of the Median Tectonic Line: A key to understand crustal activities in southwest Japan
| Project/Area Number |
23540497
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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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 |
TABEI Takao 高知大学, 教育研究部自然科学系, 教授 (40207220)
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| Co-Investigator(Kenkyū-buntansha) |
KUBO Atsuki 高知大学, 教育研究部自然科学系, 准教授 (60403870)
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| Research Collaborator |
ICHITANI Shozui 高知大学, 大学院・総合人間自然科学研究科, 応用自然科学専攻
TANAKA Mikito 高知大学, 大学院・総合人間自然科学研究科, 理学専攻
NAKAMURA Yasuhiko 高知大学, 大学院・総合人間自然科学研究科, 理学専攻
HASEGAWA Yuichi 高知大学, 大学院・総合人間自然科学研究科, 理学専攻
EDAGAWA Nobuko 高知大学, 理学部, 応用理学科災害科学コース
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| Project Period (FY) |
2011 – 2013
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2013: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2012: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2011: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Keywords | 中央構造線 / 地震 / 地殻変動 / GPS / 燧灘 |
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| Research Abstract |
Key factors which characterize crustal activities in southwest Japan are (1) plate locking distribution on the upper interface of the subducting Philippine Sea plate and (2) subsurface structure and slip-locking pattern of the Median Tectonic Line (MTL) inland. Since the MTL fault plane is inclined northward and characteristic seismic activity and anomalous deformation pattern had been recognized in the northern side of the MTL, we deployed high-sensitivity seismometers and GPS receivers there to supplement nation-wide monitoring network. The forearc block south of the MTL moves westward relative to the northern one and shear zone is formed north of the MTL by the locking on the shallower part of the MTL fault plane and the stationary slip on the deeper part.
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Report
(4 results)
Research Products
(15 results)
