New fault model based on friction experiments across the deformation mechanism transitions

• Project/Area Number: 16H04061
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Geology
• Research Institution: Chiba University
• Principal Investigator: Kanagawa Kyuichi 千葉大学, 大学院理学研究院, 教授 (40185898)
• Project Period (FY): 2016-04-01 – 2021-03-31
• Project Status: Completed (Fiscal Year 2020)
• Budget Amount: ¥17,810,000 (Direct Cost: ¥13,700,000、Indirect Cost: ¥4,110,000); Fiscal Year 2020: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000); Fiscal Year 2019: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000); Fiscal Year 2018: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000); Fiscal Year 2017: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000); Fiscal Year 2016: ¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
• Keywords: 摩擦実験 / 圧力溶解 / 地震性断層運動 / 変形機構 / 断層モデル

Outline of Final Research Achievements

Triaxial friction experiments on opal gouge at a confining pressure of 150 MPa, a pore-water pressure of 50 MPa, temperatures of 25-200℃, and axial displacement rates of 0.1-10 μm/s revealed that frictional strength increases while frictional stability decreases with increasing temperature or decreasing displacement rate. In addition, stick-slips corresponding to seismic faulting occurred at temperatures ≧150℃. Microstructural observations also revealed coalescence of gouge particles by pressure solution in samples after experiments at temperatures ≧100℃.
These results suggest that increasing temperature or decreasing displacement rate promotes cohesion of fault zone materials to increase frictional strength, and thereby the transition from velocity strengthening to velocity weakening, i.e., the transition from stable aseismic faulting to unstable seismic faulting.

Academic Significance and Societal Importance of the Research Achievements

圧力溶解による断層帯構成粒子の固結が地震性断層運動を促すという理論的仮説を実験的に検証し、沈み込み帯や内陸の非地震性から地震性への断層運動の遷移機構を明らかにしたことに、本研究の大きな学術的意義がある。また、地震に備える社会にとっても有益な情報を提供できたと考える。

Research Products

• [Journal Article] Weakening of quartz rocks at subseismic slip rates due to frictional heating, but not to lubrication by wear materials of hydrated amorphous silica or silica gel (2020)
  • Author(s): Kanagawa, K., Murayama, H., Sugita, A., Takahashi, M., Sawai, M., Furukawa, N. and Hirose, T.
  • Journal Title: Tectonophysics Volume: - Pages: 228429-228429
  • DOI: 10.1016/j.tecto.2020.228429
  • Peer Reviewed / Open Access
• [Journal Article] A new perspective of the subduction zone derived from the Ocean Drilling Program for the Nankai Trough Seismogenic Zone Experiment (NanTroSEIZE) (2018)
  • Author(s): 木村 学・木下正高・金川久一・金松敏也・芦 寿一郎・斎藤実篤・廣瀬丈洋・山田泰広・荒木英一郎・江口暢久・Sean Toczko
  • Journal Title: The Journal of the Geological Society of Japan Volume: 124 Issue: 1 Pages: 47-65
  • DOI: 10.5575/geosoc.2017.0069
  • NAID: 130007377688
  • ISSN: 0016-7630, 1349-9963
  • Year and Date: 2018-01-15
  • Peer Reviewed / Open Access
• [Journal Article] Continuous depth profile of the rock strength in the Nankai accretionary prism based on drilling performance parameters (2018)
  • Author(s): Hamada Yohei、Kitamura Manami、Yamada Yasuhiro、Sanada Yoshinori、Sugihara Takamitsu、Saito Saneatsu、Moe Kyaw、Hirose Takehiro
  • Journal Title: Scientific Reports Volume: 8 Issue: 1 Pages: 1-9
  • DOI: 10.1038/s41598-018-20870-8
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] NanTroSEIZE Stage 3: Shallow megasplay long-term borehole monitoring system (2017)
  • Author(s): Saffer, D., Kopf, A., Toczko, S. and the Expedition 365 Scientists
  • Journal Title: Proceedings of the International Ocean Discovery Program Volume: 365 Pages: 1-89
  • DOI: 10.14379/iodp.proc.365.2017
  • Open Access / Int'l Joint Research
• [Journal Article] Earthquake sequence simulations with measured properties for JFAST core samples (2017)
  • Author(s): Hiroyuki Noda, Michiyo Sawai, Bunichiro Shibazaki
  • Journal Title: Philosophical Transactions of the Royal Society A Volume: 375 Issue: 2103 Pages: 1-17
  • DOI: 10.1098/rsta.2016.0003
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Frictional properties of JFAST core samples and implications for slow earthquakes at the Tohoku subduction zone (2017)
  • Author(s): Michiyo Sawai, Andre R. Niemeijer, Takehiro Hirose, Christopher J. Spiers
  • Journal Title: Geophysical Research Letters Volume: 44 Issue: 17 Pages: 8822-8831
  • DOI: 10.1002/2017gl073460
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] In Situ Stress and Pore Pressure in the Deep Interior of the Nankai Accretionary Prism, Integrated Ocean Drilling Program Site C0002 (2017)
  • Author(s): Kitajima Hiroko、Saffer Demian、Sone Hiroki、Tobin Harold、Hirose Takehiro
  • Journal Title: Geophysical Research Letters Volume: 44 Issue: 19 Pages: 9644-9652
  • DOI: 10.1002/2017gl075127
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Metamorphism and mylonitization in sinistral shear zones found in the Poroshiri ophiolite (2016)
  • Author(s): Kato, A., K. Kanagawa, and Y. Hiroi
  • Journal Title: The Journal of the Geological Society of Japan Volume: 122 Issue: 9 Pages: 461-475
  • DOI: 10.5575/geosoc.2016.0017
  • NAID: 130005250149
  • ISSN: 0016-7630, 1349-9963
  • Year and Date: 2016-09-15
  • Peer Reviewed / Open Access
• [Journal Article] Nucleation of frictional instabilitycaused by fluid pressurization insubducted blueschist (2016)
  • Author(s): Sawai, M., A. R. Niemeijer, O. Plumper, T. Hirose, and C. J. Spiers
  • Journal Title: Geophysical Research Letters Volume: 43 Issue: 6 Pages: 2543-2551
  • DOI: 10.1002/2015gl067569
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Frictional strength of ground dolerite gouge at a wide range of slip rates (2016)
  • Author(s): Wada, J., Kanagawa, K., Kitajima, H., Takahashi, M., Inoue, A., Hirose, T., Ando, J. and Noda, H.
  • Journal Title: Journal of Geophysical Research Volume: 121 Issue: 4 Pages: 2961-2979
  • DOI: 10.1002/2015jb012013
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Transient water adsorption on newly formed fault gouge and its relation to frictional heating (2016)
  • Author(s): Mizoguchi, K., and T. Hirose
  • Journal Title: Geophysical Research Letters Volume: 43 Issue: 15 Pages: 7921-7927
  • DOI: 10.1002/2016gl069776
  • Peer Reviewed / Open Access
• [Presentation] Frictional properties of incoming sediments and rocks at shallow conditions of the Japan Trench subduction zone (2020)
  • Author(s): Kanagawa, K., Sagano, S., Nakanishi, T., Fujimori, J., and Sawai, M.
  • Organizer: JpGU-AGU Joint Meeting 2020: Virtual
  • Int'l Joint Research
• [Presentation] 準地震性変位速度における石英質岩石の摩擦発熱による弱化 (2020)
  • Author(s): 金川久一・杉田明日郁・高橋美紀・澤井みち代
  • Organizer: JpGU-AGU Joint Meeting 2020: Virtual
• [Presentation] 摩擦特性および摩擦発熱に与える背景温度の影響－ドレライトを例に－ (2020)
  • Author(s): 澤井みち代・横山湧紀・北村真奈美・金川久一
  • Organizer: JpGU-AGU Joint Meeting 2020: Virtual
• [Presentation] Changes in frictional properties of mud gouge with depth in the Nankai Trough accretionary prism (2020)
  • Author(s): Kanagawa, K., Ogawa, T., Funaki, T., Nakanishi, T., Sagano, S., Fujimori, J. and Sawai, M.
  • Organizer: JpGU-AGU Joint Meeting 2020: Virtual
  • Int'l Joint Research
• [Presentation] Frictional properties of greenstone: Effects of the seamount subduction on faulting at the subduction zone (2020)
  • Author(s): Sawai, M., Fukaumi, J., Takahashi, M., Hayasaka, Y. and Kanagawa, K.
  • Organizer: JpGU-AGU Joint Meeting 2020: Virtual
  • Int'l Joint Research
• [Presentation] Deep drilling at the Nankai Trough: IODP NanTroSEIZE Expedition 358 summary and first results (2019)
  • Author(s): Tobin, H., Hirose, T., Ikari, M., Kanagawa, K., Kimura, G., Kinoshita, M., Kitajima, H., Saffer, D. M., Yamaguchi, A., Maeda, L., Eguchi, N. and Toczko, S.
  • Organizer: 日本地球惑星科学連合2019年大会
  • Invited
• [Presentation] ドレライトおよび花崗岩の中速摩擦特性に対する背景温度の効果 (2019)
  • Author(s): 澤井みち代・横山湧紀・金川久一
  • Organizer: 日本地球惑星科学連合2019年大会
• [Presentation] 石英質岩石の中速摩擦強度の支配要因 (2019)
  • Author(s): 金川久一・杉田明日郁・高橋美紀・澤井みち代
  • Organizer: 日本地球惑星科学連合2019年大会
• [Presentation] Frictional properties of opal gouge at low-temperature hydrothermal conditions and their implications for seismogenic faulting along subduction-zone megathrusts (2019)
  • Author(s): Kanagawa, K., Nakanishi, T., Kuwana, M., Sawai, M. and Hirose, T.
  • Organizer: 日本地球惑星科学連合2019年大会
• [Presentation] 2007-2018南海トラフ地震発生帯掘削計画の科学的成果 (2019)
  • Author(s): 木村 学・木下正高・金川久一・金松敏也・芦 寿一郎・斎藤実篤・廣瀬丈洋・山田泰広・荒木英一郎・江口暢久・ Toczko Sean
  • Organizer: 日本地質学会第126年学術大会
  • Invited
• [Presentation] 南海トラフ地震発生帯掘削計画（IODP358次航海）におけるプレート境界断層に向けた超深度ライザー掘削：達成と今後 (2019)
  • Author(s): 廣瀬丈洋・木下正高・木村 学・山口飛鳥・金川久一・Tobin Harold・Ikari Matt・Kitajima Hiroko・Saffer Demian・前田玲奈・江口暢久・Tockzo Sean
  • Organizer: 日本地質学会第126年学術大会
• [Presentation] Physical properties of the Nankai Trough at IODP Expedition 358 (2019)
  • Author(s): 北村真奈美・Bedford John・Jin Zirou・Stanislowski Katja・曽根大貴・北島弘子・Ikari Matt・木村 学・山口飛 鳥・廣瀬丈洋・金川久一・木下正高・Saffer Demian・Tobin Harold・江口暢久・Toczko Sean・久保雄介・前田玲奈・IODP Expedition 358 Scientists
  • Organizer: 日本地質学会第126年学術大会
• [Presentation] Attempted ultradeep drilling to the Nankai Trough subduction zone plate boundary: The saga of IODP NanTroSEIZE Expedition 358 (2019)
  • Author(s): Tobin H. J., Hirose, T., Ikari, M., Kanagawa, K., Kimura, G., Kinoshita, M., Kitajima, H., Saffer, D. M., Yamaguchi, A., Maeda, L., Toczko, S., Eguchi, N. and IODP Expedition 358 Shipboard Scientific Party
  • Organizer: American Geophysical Union 2016 Fall Meeting
  • Int'l Joint Research
• [Presentation] Physical properties of the Nankai Trough at Sites C0002, C0024 and C0025, IODP Expedition 358 (2019)
  • Author(s): Jin, Z., Bedford, J. D., Kitamura, M., Sone, H., Stanislowski, K., Hamada, Y., Kopf, A., Zhang, J., Kitajima, H., Saffer, D. M., Hirose, T., Ikari, M., Kanagawa, K., Kimura, G., Kinoshita, M., Tobin, H. J., Yamaguchi, A., Eguchi, N., Kubo, Y., Maeda, L., Toczko, S. and IODP Expedition 358 Shipboard Scientific Party
  • Organizer: American Geophysical Union 2016 Fall Meeting
  • Int'l Joint Research
• [Presentation] Structural observations across the Nankai accretionary prism, IODP Expedition 358 (NanTroSEIZE) (2019)
  • Author(s): Regalla, C., Yamamoto, Y., Ujiie, K., Dielforder, A., Dutilleul, J., Faulkner, D., John, B., Otsubo, M., Ikari, M., Kimura, G., Kitajima, H., Yamaguchi, A., Kanagawa, K., Kinoshita, M., Tobin, H., Saffer, D., Maeda, L., Toczko, S. and the IODP Expedition 358 Shipboard Scientific Party
  • Organizer: American Geophysical Union 2016 Fall Meeting
  • Int'l Joint Research
• [Presentation] Heat flow and thermal regime in frontal region of Nankai accretionary prism off Kumano revealed from borehole APCT and observatory thermal data (2019)
  • Author(s): Kinoshita, M., Hamada, Y., Kitajima, H., Sone, H., Saffer, D. M., Tobin, H. J., Kimura, G., Ikari, M., Hirose, T., Yamaguchi, A., Kanagawa, K., Kimura, T., Maeda, L., Toczko, S. and IODP Exp358 Science Party
  • Organizer: American Geophysical Union 2016 Fall Meeting
  • Int'l Joint Research
• [Presentation] オパールガウジの低温熱水条件における摩擦特性に対する溶解－析出クリープの影響 (2018)
  • Author(s): 中西智哉・金川久一・澤井 みち代
  • Organizer: 日本地球惑星科学連合2018年大会
• [Presentation] 大気中とアルゴン雰囲気中におけるめのうの中速摩擦強度 (2018)
  • Author(s): 村山寛樹・金川久一・廣瀬丈洋・古川 登
  • Organizer: 日本地球惑星科学連合2018年大会
• [Presentation] 200℃以下の熱水条件におけるオパールガウジの摩擦特性 (2018)
  • Author(s): 中西智哉・金川久一・澤井 みち代
  • Organizer: 日本地質学会第125年学術大会（つくば特別大会）
• [Presentation] アルゴン雰囲気下におけるドレライトの中速摩擦特性に対する温度効果 (2017)
  • Author(s): 横山湧紀・村山寛樹・金川久一・澤井みち代
  • Organizer: JpGU-AGU Joint Meeting 2017
• [Presentation] 大気中およびアルゴン雰囲気下における中速域のめのうの摩擦強度 (2017)
  • Author(s): 村山寛樹・金川久一・澤井みち代・廣瀬丈洋
  • Organizer: JpGU-AGU Joint Meeting 2017
• [Presentation] Frictional properties of Akiyoshi greenstone: implications for the seamount subduction and earthquake generation (2017)
  • Author(s): Sawai, M., Hayasaka, Y., Shimamoto, T., Ma, S. and Yao, L.
  • Organizer: JpGU-AGU Joint Meeting 2017
  • Int'l Joint Research
• [Presentation] Frictional properties of the Nankai Trough accretionary mud samples collected and cored from 944.6_3030.5 mbsf at IODP Site C0002 (2017)
  • Author(s): Kanagawa, K., Hoshino, K., Abe, K. and Sawai, M.
  • Organizer: JpGU-AGU Joint Meeting 2017
  • Int'l Joint Research
• [Presentation] Frictional properties of accretionary mud/mudstone samples and their implications for a transition of aseismic to seismic faulting within the hanging wall of the Nankai Trough subduction zone (2017)
  • Author(s): Kanagawa, K., Hoshino, K., Abe, K. and Sawai, M.
  • Organizer: Joint Workshop on Slow Earthquakes 2017
  • Int'l Joint Research
• [Presentation] Frictional properties of mud sediments at PT conditions around the seismogenic updip limit of the Nankai Trough subduction zone (2017)
  • Author(s): Abe, K., Kanagawa, K. and Sawai, M.
  • Organizer: Joint Workshop on Slow Earthquakes 2017
  • Int'l Joint Research
• [Presentation] Frictional properties of accretionary mud/mudstone samples and their implications for a transition of aseismic to seismic faulting within the hanging wall of the Nankai Trough subduction zone (2017)
  • Author(s): Kanagawa, K., Hoshino, K., Abe, K. and Sawai, M.
  • Organizer: Symposium Celebrating 50 Years of Rock Deformation at RSES
  • Int'l Joint Research
• [Presentation] Frictional properties of the Nankai Trough accretionary mud samples collected from 1000-3000 mbsf at IODP Site C0002 (2016)
  • Author(s): Kanagawa, K., Hoshino, K., Abe, K. and Sawai, M.
  • Organizer: American Geophysical Union 2016 Fall Meeting
  • Place of Presentation: Moscone Center, San Francisco
  • Year and Date: 2016-12-13
  • Int'l Joint Research
• [Presentation] 室内実験結果を用いた地震サイクルシミュレーション：日本海 溝沈み込み帯とJFASTコア試料を例として (2016)
  • Author(s): 野田博之・澤井みち代・芝崎文一郎
  • Organizer: 日本地質学会第123年学術大会
  • Place of Presentation: 日本大学文理学部（東京都・世田谷区）
  • Year and Date: 2016-09-12
  • Invited
• [Presentation] 藍閃石片岩及び花崗岩の摩擦特性に対する間隙水圧の効果 (2016)
  • Author(s): 澤井みち代・高橋美紀
  • Organizer: 日本地質学会第123年学術大会
  • Place of Presentation: 日本大学文理学部（東京都・世田谷区）
  • Year and Date: 2016-09-12
• [Presentation] IODP掘削地点C0002の海底下1000~3000 mから採取された、南 海トラフ付加体泥質堆積物試料の摩擦特性 (2016)
  • Author(s): 星野紘輝・阿部浩 典・澤井みち代・金川久一
  • Organizer: 日本地質学会第123年学術大会
  • Place of Presentation: 日本大学文理学部（東京都・世田谷区）
  • Year and Date: 2016-09-11
• [Presentation] 白亜系四万十帯構成岩類の震源域条件における摩擦特性 (2016)
  • Author(s): 阿部浩典・星野紘輝・澤井みち代・金川久一
  • Organizer: 日本地質学会第123年学術大会
  • Place of Presentation: 日本大学文理学部（東京都・世田谷区）
  • Year and Date: 2016-09-11
• [Presentation] Numerical and experimental studies on fault behavior accounting for brittle-plastic transition and pore pressure effect (2016)
  • Author(s): Noda, H. and Takahashi, M.
  • Organizer: International Symposium “Crustal Dynamics 2016”
  • Place of Presentation: 高山市民文化会館（岐阜県・高山市）
  • Year and Date: 2016-07-22
  • Int'l Joint Research
• [Presentation] Strength profile of the active Nankai accretionary prism: Inferences from mechanical property of cuttings collected during IODP Expedition 348 (2016)
  • Author(s): Hirose, T., Kitamura, M., Kitajima, H. and Sone, H.
  • Organizer: International Symposium “Crustal Dynamics 2016”
  • Place of Presentation: 高山市民文化会館（岐阜県・高山市）
  • Year and Date: 2016-07-21
  • Int'l Joint Research
• [Presentation] Effects of pore pressure on frictional behavior of rocks (2016)
  • Author(s): Sawai, M. and Takahashi, M.
  • Organizer: International Symposium “Crustal Dynamics 2016”
  • Place of Presentation: 高山市民文化会館（岐阜県・高山市）
  • Year and Date: 2016-07-21
  • Int'l Joint Research
• [Presentation] 脆性・塑性遷移における有効応力則：岩塩を用いたアナログ実験 (2016)
  • Author(s): 野田博之・高橋美紀
  • Organizer: 日本地球惑星科学連合2016年大会
  • Place of Presentation: 幕張メッセ国際会議場（千葉県・千葉市）
  • Year and Date: 2016-05-26
  • Invited
• [Presentation] 東北沖沈み込みプレート境界物質の摩擦挙動と地震発生 (2016)
  • Author(s): 澤井みち代・Niemeijer, A. R.・廣瀬丈洋・Spiers, C. J.
  • Organizer: 日本地球惑星科学連合2016年大会
  • Place of Presentation: 幕張メッセ国際会議場（千葉県・千葉市）
  • Year and Date: 2016-05-25
  • Invited
• [Presentation] Frictional properties of the Nankai Trough accretionary mud samples collected from 1000-3000 mbsf at IODP Site C0002 (2016)
  • Author(s): Hoshino, K., Abe, K., Sawai, M. and Kanagawa, K.
  • Organizer: 日本地球惑星科学連合2016年大会
  • Place of Presentation: 幕張メッセ国際会議場（千葉県・千葉市）
  • Year and Date: 2016-05-24
  • Int'l Joint Research
• [Presentation] Frictional properties of the Northern Shimanto Belt rocks at a seismogenic pressure and temperature condition (2016)
  • Author(s): Abe, K., Hoshino, K., Sawai, M. and Kanagawa, K.
  • Organizer: 日本地球惑星科学連合2016年大会
  • Place of Presentation: 幕張メッセ国際会議場（千葉県・千葉市）
  • Year and Date: 2016-05-24
  • Int'l Joint Research
• [Presentation] Frictional property of rocks in the Izu forearc: implications for the Boso slow slip events (2016)
  • Author(s): Hirose, T., Hyoudou, G. and Saito, S.
  • Organizer: 日本地球惑星科学連合2016年大会
  • Place of Presentation: 幕張メッセ国際会議場（千葉県・千葉市）
  • Year and Date: 2016-05-22
  • Int'l Joint Research