2013 Fiscal Year Final Research Report
High precision topographical/geological surveys for elucidating the activity history of seismogenic faults
| Project Area | New perspective of great subduction-zone earthquakes from the super deep drilling |
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| Project/Area Number |
21107003
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| Research Category |
Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)
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| Allocation Type | Single-year Grants |
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| Review Section |
Science and Engineering
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| Research Institution | The University of Tokyo |
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Principal Investigator |
ASHI JUICHIRO 東京大学, 新領域創成科学研究科, 准教授 (40251409)
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| Co-Investigator(Kenkyū-buntansha) |
IKEHARA Ken 独立行政法人産業技術総合研究所, 地質情報研究部門, 副部門長 (40356423)
KAWAMURA Kiichiro 山口大学, 大学院理工学研究科, 准教授 (50321675)
YAMANO Makoto 東京大学, 地震研究所, 准教授 (60191368)
TSUJI Takeshi 九州大学, カーボンニュートラル・エネルギー国際研究所, 准教授 (60455491)
IKEDA Yasutaka 東京大学, 大学院理学系研究科, 准教授 (70134442)
SAKAGUCHI Arito 山口大学, 大学院理工学研究科, 准教授 (80304666)
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| Co-Investigator(Renkei-kenkyūsha) |
TSUNOGAI Urumu 名古屋大学, 大学院環境学研究科, 教授 (50313367)
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| Project Period (FY) |
2009-07-23 – 2014-03-31
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| Keywords | 活断層 / 変動地形 / 地すべり / 地震 / 海底調査 |
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| Research Abstract |
We revealed seafloor disturbances, detailed fault structures, and sediment transport-and-accumulation by earthquake shaking and/or tsunami by high precision surveys and seafloor observations before and after earthquakes. This provided the effectual methods to understand the activity histories of earthquakes or faultings based on sediment samples. Moreover, we estimated fluid migrations and expulsions along faults or in oceanic crust from thermal structure and origin-and-conduit from fluid chemistry, consequently delivering fundamental information for understanding of pre- and co-seismic processes of great subduction zone earthquakes.
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