2010 Fiscal Year Annual Research Report
Project Area | New perspective of great subduction-zone earthquakes from the super deep drilling |
Project/Area Number |
21107004
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Research Institution | Chiba University |
Principal Investigator |
金川 久一 千葉大学, 大学院・理学研究科, 教授 (40185898)
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Co-Investigator(Kenkyū-buntansha) |
堤 昭人 京都大学, 大学院・理学研究科, 助教 (90324607)
高橋 美紀 産業技術総合研究所, 活断層・地震研究センター, 研究員 (40470033)
廣瀬 丈洋 海洋研究開発機構, 高知コア研究所, 研究員 (40470124)
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Keywords | 南海トラフ地震発生帯 / 掘削試料 / 破壊実験 / 摩擦実験 / 透水実験 |
Research Abstract |
今年度は南海トラフ付加体浅部から採取された泥岩試料の微細構造観察と破壊・摩擦・透水実験を行い、以下の成果を得た。 1)付加体の泥岩にはタービダイト起源の泥岩と半遠洋性泥岩の2種類あり、前者は石英や長石などの砕屑粒子に富み、淘汰が悪く孔隙が多く、一方後者は石英や長石などの砕屑粒子に乏しく、スメクタイトなどの粘土鉱物に富み、細粒均質で孔隙が少ない。 2)室温、試料原位置の圧力・間隙圧に相当する封圧36~38MPa、間隙圧28~29MPaでは、タービダイト起源の泥岩は破壊強度が約20MPaと比較的大きく急激な応力降下を伴って破壊したが、半遠洋性泥岩は破壊強度が14.5MPaと比較的小さくゆっくりとした応力降下が起こった。また、タービダイト起源の泥岩の浸透率は2.3×10^<-19>m^2と比較的大きく、一方半遠洋性泥岩の浸透率は2.9×10^<-20>m^2と比較的小さかった。 3)室温・大気圧・含水条件において、1cm/s以下の低~中変位速度ではタービダイト起源の泥岩は摩擦強度が比較的大きく(摩擦係数約0.4~0.5)速度弱化を示すのに対し、半遠洋性泥岩は摩擦強度が比較的小さく(摩擦係数約0.3~0.4)速度強化を示した。一方1cm/s以上の高変位速度では両者の摩擦強度に有意な差がなくなり、両者とも顕著な速度弱化を示した。 4)以上のようにタービダイト起源の泥岩と半遠洋性泥岩は、力学的性質、水理学的性質ともに大きく異なることが明らかとなった。従って、両者を母岩とする付加体内部の断層の挙動にも大きな相違が予想される。 また、京都大学の既存の回転剪断試験機に高温高圧容器を付加し、最高温度300℃、最大封圧150MPaの条件での回転剪断試験が可能になった。来年度に調整と試運転を行い、掘削試料の原位置条件における中~高速摩擦実験に使用する予定である。
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[Journal Article] Fault lubrication during earthquakes2011
Author(s)
Di Toro, G., Han, R., Hirose, T., De Paola, N., Nielsen, S., Mizoguchi, K., Ferri, F., Cocco, M. and Shimamoto, T
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Journal Title
Nature
Volume: 471
Pages: 494-498
DOI
Peer Reviewed
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[Journal Article] Internal structure of Longmenshan fault zone at Hongkou outcrop, Sichuan, China, that caused the 2008 Wenchuan earthquake2011
Author(s)
Togo, T., Shimamoto, T., Ma, S., Wen, X., He, H.
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Journal Title
Earthquake Science
Volume: 24
Pages: 249-265
DOI
Peer Reviewed
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[Journal Article] Fault lubrication and earthquake propagation in thermally unstable rocks2011
Author(s)
De Paola, N., Hirose, T., Mitchell, T., Di Toro, G., Viti, C., Shimamoto, T.
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Journal Title
Geology
Volume: 39
Pages: 35-38
Peer Reviewed
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[Journal Article] Seismic slip propagation to the updip end of plate boundary subduction interface faults : Vitrinite reflectance geothermometry on Integrated Ocean Drilling Program NanTro SEIZE cores2011
Author(s)
Sakaguchi, A., Chester, F., Curewitz, D., Fabbri, O., Goldsby, D., Kimura, G., Li, C-F., Masaki, Y., Screaton, E., Tsutsumi, A., Ujiie, K., Yamaguchi, A.
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Journal Title
Geology
Volume: 39
Pages: 395-398
Peer Reviewed
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[Journal Article] Frequency-magnitude characteristics down to magnitude -4.4 for induced seismicity recorded at Mponeng Gold Mine, South Africa2010
Author(s)
Kwiatek, G., Plenkers, K., Nakatani, M., Yabe, Y., Dresen, G., JAGUARS-Group
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Journal Title
Bulletin of the Seismological Society of America
Volume: 100
Pages: 1165-1173
Peer Reviewed
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[Journal Article] Stress-dependence of the permeability and porosity of sandstone and shale from TCDP Hole-A2010
Author(s)
Dong, J.-J., Hsu, J.-Y., Wu, W.-J., Shimamoto, T., Hung, J.-H., Yeh, E.-C., Wu, Y.-H., Sone, H.
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Journal Title
International Journal of Rock Mechanics & Mining Sciences
Volume: 47
Pages: 1141-1157
Peer Reviewed
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[Journal Article] Fluid transport properties and estimation of overpressure at the Lusi mud volcano, East Java Basin2010
Author(s)
Tanikawa, W., Sakaguchi, M., Wibowo, H.T., Shimamoto, T., Tadai, O.
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Journal Title
Engineering Geology
Volume: 116
Pages: 73-85
Peer Reviewed
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[Journal Article] Record of mega-earthquakes in subduction thrusts : the black fault rocks of Pasagshak Point (Kodiak Island, Alaska)2010
Author(s)
Meneghini, F., Di Toro, G., Rowe, D.C., Moore, J.C., Tsutsumi, A., Yamaguchi, A.
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Journal Title
Geological Society of America Bulletin
Volume: 122
Pages: 1280-1297
Peer Reviewed
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[Journal Article] Thickness and grain-size distribution of the 2004 Indian Ocean tsunami deposits in Periya Kalapuwa Lagoon, eastern Sri Lanka2010
Author(s)
Matsumoto, D., Shimamoto, T., Hirose, T., Gunatilake, J., Wickramasooriya, A., DeLile, J., Young, S., Rathnayake, C., Ranasooriya, J., Murayama, M.
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Journal Title
Sedimentary Geology
Volume: 230
Pages: 95-104
Peer Reviewed
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[Journal Article] P-wave velocity and anisotropy of lawsonite and epidote blueschists : Constraints on water transportation along subducting oceanic crust2010
Author(s)
Fujimoto, Y., Kono, Y., Hirajima, T., Kanagawa, K., Ishikawa, M., Arima, M.
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Journal Title
Physics of the Earth and Planetary Interiors
Volume: 183
Pages: 219-228
Peer Reviewed
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[Journal Article] On the transient behavior of frictional melt during seismic slip2010
Author(s)
Nielsen, S., Mosca, P., Giberti, G., Di Toro, G., Hirose, T., Shimamoto, T.
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Journal Title
Journal of Geophysical Research
Volume: 115
Pages: B10301(1-17)
Peer Reviewed
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[Presentation] The geochemical signature of carbonate-hosted seismogenic faults2011
Author(s)
De Paola, N., Chiodini, G., Hirose, T., Cardellini, C., Caliro, S., Shimamoto, T.
Organizer
Symposium on Mechanics in Geophysical and Material Sciences in Honor of Professor James R.Rice
Place of Presentation
California Institute of Technology
Year and Date
20110120-20110122
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[Presentation] Tsaoling and Jiefengerhan landslides : two catastrophic landslides triggered by 1999 Taiwan Chi-Chi earthquake as studied by high-velocity friction experiments2011
Author(s)
Shimamoto, T., Togo, T., Oohashi, K., Miyamoto, Y., Yano, K., Dong, J.-J., Lee, C-T.
Organizer
Tectonic Studies Group 2011 Annual Meeting
Place of Presentation
Durham University
Year and Date
2011-01-07
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[Presentation] The geochemical signature of carbonate-hosted seismogenic faults2011
Author(s)
De Paola, N., Chiodini, G., Hirose, T., Cardellini, C., Caliro, S., Shimamoto, T.
Organizer
Tectonic Studies Group 2011 Annual Meeting
Place of Presentation
Durham University
Year and Date
2011-01-07
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[Presentation] Effect of talc fraction on frictional strength of serpentine gouge at coseismic slip velocity2010
Author(s)
Doan, M.-L., Hirose, T., Boutareaud, S., Andreani, M., Boullier, A.-M., Calugaru, D.-G.
Organizer
Workshop on Physico-chemical Processes in Seismic Faults
Place of Presentation
Universita degli Studi di Padova
Year and Date
20101118-20101120
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[Presentation] Earthquake mechanism studies by active-fault drilling : Chi-Chi Taiwan to Wenchuan earthquakes2010
Author(s)
Togo, T., Shimamoto, T., Ma, S., Noda, H., Hirose, T., Tanikawa, W.
Organizer
American Geophysical Union 2010 Fall Meeting
Place of Presentation
Moscone Center, San Francisco
Year and Date
2010-12-17
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[Presentation] Effect of water on long-term weakening preceding rupture of crustal faults2010
Author(s)
Masuda, K., Arai, T., Fujimoto, K., Takahashi, M., Shigematsu, N.
Organizer
American Geophysical Union 2010 Fall Meeting
Place of Presentation
Moscone Center, San Francisco
Year and Date
2010-12-16
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[Presentation] Dynamics of pseudotachylytes in volcanic structures2010
Author(s)
Lavallee, Y., Mitchell, T.M., Heap, M.J., Hirose, T., Dingwell, D.B.
Organizer
American Geophysical Union 2010 Fall Meeting
Place of Presentation
Moscone Center, San Francisco
Year and Date
2010-12-15
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[Presentation] Frictional behaviour of subduction zone fault rocks at low to high sliding velocities2010
Author(s)
den Hartog, S.A., Peach, C.J., Spiers, C., Hirose, T., Tanikawa, W., Shimamoto, T.
Organizer
American Geophysical Union 2010 Fall Meeting
Place of Presentation
Moscone Center, San Francisco
Year and Date
2010-12-15
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[Presentation] Coseismic and aseismic deformations of the rock mass around deep level mining in South Africa-Joint South African and Japanese study2010
Author(s)
Milev, A.M., Yabe, Y., Naoi, M., Nakatani, M., Durrheim, R.J., Ogasawara, H., Scholz, C.H.
Organizer
American Geophysical Union 2010 Fall Meeting
Place of Presentation
Moscone Center, San Francisco
Year and Date
2010-12-15
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[Presentation] Frictional properties of megathrust fault gouges : experiments at sliding velocities between 1mm/s and 1.7m/s2010
Author(s)
den Hartog, S.A.M., Hirose, T., Peach, C.J., Shimamoto, T., Spiers, C.J., Tanikawa, W.
Organizer
Workshop on Physico-chemical Processes in Seismic Faults
Place of Presentation
Universita degli Studi di Padova
Year and Date
2010-11-20
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[Presentation] Talc lubrication of faults at seismic velocities2010
Author(s)
Boutareaud, S., Hirose, T., Doan, M.L., Andreani, M., Calugaru, D.G., Pec, M., Boullier, A.M., Cordonnier, B.
Organizer
Workshop on Physico-chemical Processes in Seismic Faults
Place of Presentation
Universita degli Studi di Padova
Year and Date
2010-11-19
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[Presentation] The geochemical signature of carbonate-hosted seismogenic faults2010
Author(s)
De Paola, N., Chiodini, G., Hirose, T., Cardellini, C., Caliro, S., Shimamoto, T.
Organizer
Workshop on Physico-chemical Processes in Seismic Faults
Place of Presentation
Universita degli Studi di Padova
Year and Date
2010-11-19
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[Presentation] Frictional melt generated from similar & dissimilar volcanic rocks2010
Author(s)
Mitchell, M., Heap, M., Lavallee, Y., Hirose, T., Dingwell, D., Vincigueraa, S., Renner, J.
Organizer
Workshop on Physico-chemical Processes in Seismic Faults
Place of Presentation
Universita degli Studi di Padova
Year and Date
2010-11-19
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[Presentation] If pseudotachylyte could talk2010
Author(s)
Nielsen, S., Griffith, A., Di Toro, G., Niemajier, A., Smith, S., Bistacchi, A., Spagnuolo, E., Pennacchioni, G., Di Felice, F., Romeo, G., Di Stefano, G., Cavallo, A., Hirose, T., Shimamoto, T., Scarlato, P.
Organizer
Workshop on Physico-chemical Processes in Seismic Faults
Place of Presentation
Universita degli Studi di Padova
Year and Date
2010-11-19
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[Presentation] Reconstructing features of earthquake dynamics from field and experimental observations2010
Author(s)
Nielsen, S., Griffith, A., Di Toro, G., Niemajier, A., Smith, S., Bistacchi, A., Spagnuolo, E., Pennacchioni, G., Di Felice, F., Romeo, G., Di Stefano, G., G., Cavallo, A., Hirose, T., Shimamoto, T.
Organizer
Geological Society of America 2010 Annual Meeting
Place of Presentation
Colorado Convention Center
Year and Date
2010-11-02
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[Presentation] Co-seismic chemical reactions in seismogenic subduction zones : field, geochemical and experimental approaches2010
Author(s)
Yamaguchi, A., Cox, S.F., Hirose, T., Nishio, Y., Kimura, G.
Organizer
Joint Meeting of Korean and Japanese Geological Societies
Place of Presentation
国立室戸青少年自然の家
Year and Date
2010-08-24
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[Presentation] Rotary shear test of colluvium and shale powder from Siaolin landslide area under low to high slip rates2010
Author(s)
Dong, J., Han, R., Wu, W., Yu, W., Yu, Y., Shimamoto, T.
Organizer
2010 Western Pacific Geophysics Meeting
Place of Presentation
台北国際会議場
Year and Date
2010-06-25
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[Presentation] Frictional high heat at shallow portion of the mega-splay fault and frontal thrust : Core analysis of IODP NanTroSEIZE stage 12010
Author(s)
Sakaguchi, A., Chester, F., Curewitz, D., Fabbri, O., Goldsby, D., Kimura, G., Li, C., Masaki, Y., Screaton, E., Tsutsumi, A., Ujiie, K., Yamaguchi, A.
Organizer
2010 Western Pacific Geophysics Meeting
Place of Presentation
台北国際会議場
Year and Date
2010-06-23
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[Presentation] Anelastic strain recovery in ocean floor sediments reveals extension across SW Japan subduction zone2010
Author(s)
Byrne, T.B., Lin, W., Tsutsumi, A., Yamamoto, Y., Lewis, J., Kanagawa, K., Kitamura, Y., Yamaguchi, A., Kimura, G.
Organizer
2010 Western Pacific Geophysics Meeting
Place of Presentation
台北国際会議場
Year and Date
2010-06-23
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[Presentation] Drilling into the source region of an Mw1.9 earthquake in a South African deep gold mine2010
Author(s)
Yabe, Y., Naoi, M., Nakatani, M., Philipp, J., Otsuki, K., Kawakata, H., Moriya, H., Yoshimitsu, N., Katsura, T., Stanchits, S., Morema, G., Milton, K., Mochizuki, H., Miyakawa, K., Dresen, G., Ogasawara, H.
Organizer
2010 Western Pacific Geophysics Meeting
Place of Presentation
台北国際会議場
Year and Date
2010-06-23
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[Presentation] 鉱山での地震被害低減のための観測研究-日本と南アフリカの共同研究2010
Author(s)
小笠原宏・Durrheim, R.・中谷正生・矢部康男・Milev, A.・Cichowicz, A.・川方裕則・森谷祐一・佐藤隆司・Murphy, S.・Ward, A.・Morema, G.・Kataka, M.・Vermeulen, R.・van Aswegen, G.・Research Group
Organizer
日本地球惑星科学連合2010年大会
Place of Presentation
幕張メッセ国際会議場
Year and Date
2010-05-26
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[Presentation] High-velocity frictional behavior of Longmenshan fault gouge during variable slip histories2010
Author(s)
Togo, T., Shimamoto, T., Ma, S., Wen, X., Hirose, T., Sone, H.
Organizer
日本地球惑星科学連合2010年大会
Place of Presentation
幕張メッセ国際会議場
Year and Date
2010-05-25
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[Presentation] Evidence for high frictional heat at a shallow portion of the faults, Tonankai earthquake rupture area2010
Author(s)
Sakaguchi, A., Chester, F., Curewitz, D., Fabbri, O., Goldsby, D., Kimura, G., Li, C.-F., Masaki, Y., Screnton, E., Tsutsumi, A., Ujiie, K., Yamaguchi, A.
Organizer
日本地球惑星科学連合2010年大会
Place of Presentation
幕張メッセ国際会議場
Year and Date
2010-05-24
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[Presentation] Anelastic strain recovery in ocean floor sediments reveals extension across SW Japan subduction zone2010
Author(s)
Byrne, T.B., Lin, W., Tsutsumi, A., Yamamoto, Y., Lewis, J.C., Kanagawa, K., Kitamura, Y., Yamaguchi, A., Kimura, G.
Organizer
日本地球惑星科学連合2010年大会
Place of Presentation
幕張メッセ国際会議場
Year and Date
2010-05-23
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[Presentation] Fault lubrication and earthquake propagation in thermally unstable rocks2010
Author(s)
De Paola, N., Hirose, T., Mitchell, T., Di Toro, G., Viti, C., Shimamoto, T.
Organizer
European Geosciences Union General Assembly 2010
Place of Presentation
Austria Center, Vienna
Year and Date
2010-05-03
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[Presentation] Variations in structural symmetry, damage distribution, and textural characteristics surrounding strike-slip faults2010
Author(s)
Mitchell, T., Weschler, N., Rockwell, T., Ben Zion, Y., Faulkner, D., Shimamoto, T.
Organizer
European Geosciences Union General Assembly 2010
Place of Presentation
Austria Center, Vienna
Year and Date
2010-05-03
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