Silica/clay diagenesis and its effect on interplate seismicity in subduction zones
Project/Area Number |
24740339
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Research Category |
Grant-in-Aid for Young Scientists (B)
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Allocation Type | Multi-year Fund |
Research Field |
Geology
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Research Institution | Hokkaido University (2013-2014) The University of Tokyo (2012) |
Principal Investigator |
KAMEDA Jun 北海道大学, 理学(系)研究科(研究院), 准教授 (40568713)
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Project Period (FY) |
2012-04-01 – 2015-03-31
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Project Status |
Completed (Fiscal Year 2014)
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Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2013: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2012: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
|
Keywords | 東北地方太平洋沖地震 / スメクタイト / 続成作用 / 遠洋性粘土 / 日本海溝 / 海溝型地震 / 珪質堆積物 / Costa Rica |
Outline of Final Research Achievements |
The very large slip on the shallow portion of the subduction interface during the 2011 Tohoku-oki earthquake (Mw 9.0) caused a huge tsunami along the northeast coast of Honshu, Japan. In order to elucidate the mechanics of such tsunamigenic slip, mineralogical propery of the source fault rock was examined by using XRD. The analysis reveal that the fault zone that caused the earthquake is significantly enriched in smectite compared to the surrounding sediments, which may be intimately linked to the tsunamigenic shallow faulting. The smectite-rich deposits are broadly distributed in the northwestern Pacific Ocean, and may therefore potentially enhance conditions for large shallow slip during earthquakes that occur over a broad area of the Japan Trench plate boundary, which would result in large tsunamis for this region.
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Report
(4 results)
Research Products
(25 results)
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[Journal Article] Geochemical and mineralogical characteristics of fault gouge in the Median Tectonic Line, Japan: evidence for earthquake slip2014
Author(s)
Ishikawa, T., Hirono, T., Matsuta, N., Kawamoto, K., Fujimoto, K., Kameda, J., Nishio, Y., Maekawa, Y. and Honda, G.
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Journal Title
Earth, Planets and Space
Volume: 66:36
Issue: 1
Pages: 1-20
DOI
Related Report
Peer Reviewed / Open Access / Acknowledgement Compliant
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[Journal Article] The influence of organic–rich shear zones on pelagic sediment deformation and seismogenesis in a subduction zone2014
Author(s)
Kameda J., Kouketsu Y., Shimizu M., Yamaguchi A., Hamada Y., Hamahashi M., Koge H., Fukuchi R., Ikeda M., Kogure T. & Kimura G.
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Journal Title
Journal of Mineralogical and Petrological Sciences
Volume: 109
Issue: 5
Pages: 228-238
DOI
NAID
ISSN
1345-6296, 1349-3825
Related Report
Peer Reviewed
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[Journal Article] Changes in illite crystallinity within an ancient tectonic boundary thrust caused by thermal, mechanical, and hydrothermal effects: an example from the Nobeoka Thrust, southwest Japan2014
Author(s)
Fukuchi R, Fujimoto K, Kameda J, Hamahashi M, Yamaguchi A, Kimura G, Hamada Y, Hashimoto Y, Kitamura Y, Saito S
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Journal Title
Earth, Planets and Space
Volume: 66:116
Issue: 1
Pages: 1-12
DOI
Related Report
Peer Reviewed / Open Access / Acknowledgement Compliant
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[Journal Article] Friction properties of the plate boundary megathrust beneath the frontal wedge near the Japan Trench: an inference from topographic variation2014
Author(s)
Koge H, Fujiwara T, Kodaira S, Sasaki T, Kameda J, Kitamura Y, Hamahashi M, Fukuchi R, Yamaguchi A, Hamada Y, Ashi J, Kimura G
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Journal Title
Earth, Planets and Space
Volume: 66:153
Issue: 1
Pages: 153-153
DOI
Related Report
Peer Reviewed / Open Access / Acknowledgement Compliant
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[Journal Article] Hanging wall deformation of a seismogenic megasplay fault in an accretionary prism : The Nobeoka Thrust in southwestern Japan2013
Author(s)
Kimura, G., Hamahashi, M., Okamoto, S., Yamaguchi, A., Kameda, J., Raimbourg, H., Hamada, Y., Yamaguchi, H. and Shibata, T
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Journal Title
J. Structural Geology
Volume: 52
Pages: 136-147
DOI
Related Report
Peer Reviewed
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[Journal Article] Contrasts in physical properties between the hanging wall and footwall of an exhumed seismogenic megasplay fault in a subduction zone―An example from the Nobeoka Thrust Drilling Project2013
Author(s)
Hamahashi, M., Saito, S., Kimura, G., Yamaguchi, A., Fukuchi, R., Kameda, J., Hamada, Y., Kitamura, Y., Fujimoto, K., Hashimoto, Y., Hina, S., Eida, M
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Journal Title
Geochemistry, Geophysics, Geosystems
Volume: 14
Issue: 12
Pages: 5354-5370
DOI
Related Report
Peer Reviewed
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[Journal Article] and Expedition 343 and 343T Scientists (2013) Low coseismic shear stress on the Tohoku-Oki megathrust determined from laboratory experiments2013
Author(s)
Ujiie, K., Tanaka, H., Saito, T., Tsutsumi, A., Mori, J. J., Kameda, J., Brodsky, E. E., Chester, F. M., Eguchi, N., Toczko, S
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Journal Title
Science
Volume: 342
Issue: 6163
Pages: 1211-1214
DOI
Related Report
Peer Reviewed
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[Journal Article] Structure and composition of the plate-boundary slip zone for the 2011 Tohoku-oki earthquake2013
Author(s)
Chester, F. M., Rowe, C., Ujiie, K., Kirkpatrick, J., Regalla, C., Remitti, F., Moore, J. C., Toy, V., Wolfson-Schwehr, M., Bose, S., Kameda, J., Mori, J. J., Brodsky, E. E., Eguchi, E., Toczko, S. and Expedition 343 and 343T Scientists
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Journal Title
Science
Volume: 342
Issue: 6163
Pages: 1208-1211
DOI
Related Report
Peer Reviewed
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[Journal Article] Expedition 343 Scientists., Stress State in the Largest Displacement Area of the 2011 Tohoku-Oki Earthquake2013
Author(s)
Lin, W., Conin, M., Moore, J.C., Chester, F.M., Nakamura, Y., Mori, J.J., Anderson, L., Brodsky, E.E., Eguchi, H
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Journal Title
Science
Volume: 339
Issue: 6120
Pages: 687-690
DOI
Related Report
Peer Reviewed
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