Evolution of physical property of deep-water sediments induced by bio-chemical diagenesis at the Shimokita-Hachinohe coal-bed basin

• Project/Area Number: 25800284
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Geology
• Research Institution: Japan Agency for Marine-Earth Science and Technology
• Principal Investigator: TANIKAWA Wataru 独立行政法人海洋研究開発機構, 高知コア研究所, 主任研究員 (70435840)
• Project Period (FY): 2013-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000); Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2013: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
• Keywords: 間隙率 / 熱物性 / 水分活性 / 地下生命圏 / 続成作用 / 褐炭層 / 堆積盆地 / IODP第337次研究航海 / 熱伝導率 / 温度構造 / 透水係数 / 間隙径分布 / 海底下微生物

Outline of Final Research Achievements

Microbial biomass in the deep ocean sediments is controlled by physical properties. Therefore, in this study, a series of physical property measurements (Thermal property, porosity, permeability, and water activity) were conducted on the sediment cores at site C0020 from IODP expedition 337 and at site 902 from the Chikyu shakedown cruise (CY06-06) in Sanriku-oki basin. Thermal property measurement revealed that temperature at depth is mainly controlled by the porosity and mineral composition of sediments. Water activity was very high for all the sediment, and we found that chemical composition of pore water controls the water activity. Positive correlation between porosity and microbial biomass was clearly observed, though the relationship between water activity and biomass was unclear. Our result suggests that porosity and pore diameter will mainly control the microbial activity at depth.

Research Products

• [Journal Article] Mineral assemblage anomalies in the slip zone of the 1999 Taiwan Chi-Chi earthquake: Ultrafine particles preserved only in the latest slip zone (2014)
  • Author(s): Hirono, T., Kameda, J., Kanda, H., Tanikawa, W. and Ishikawa, T.
  • Journal Title: Geophysical Research Letters Volume: 41 Issue: 9 Pages: 1-8
  • DOI: 10.1002/2014gl059805
  • Peer Reviewed
• [Journal Article] Estimation of slip parameters associated with frictional heating during the 1999 Taiwan Chi-Chi earthquake by vitrinite reflectance geothermometry (2014)
  • Author(s): Maekawa, Y., Hirono, T., Yabuta, H., Mukoyoshi, H., Kitamura, M., Ikehara, M., Tanikawa, W. and Ishikawa, T.
  • Journal Title: Earth, Planets and Space Volume: 66:28 Issue: 1 Pages: 1-7
  • DOI: 10.1186/1880-5981-66-28
  • NAID: 120006800837
  • Peer Reviewed / Open Access
• [Journal Article] Pressure dependence of fluid transport properties of shallow fault systems in the Nankai subduction zone (2014)
  • Author(s): Tanikawa, W., Mukoyoshi, H., Lin, W., Hirose, T. and Tsutsumi, A.
  • Journal Title: Earth, Planets and Space Volume: 66 Issue: 1 Pages: 1-9
  • DOI: 10.1186/1880-5981-66-90
  • Peer Reviewed / Open Access
• [Journal Article] Permeability changes in simulated granite faults during and after frictional sliding (2014)
  • Author(s): Tanikawa, Wataru., Tadai, Osamu and Mukoyoshi, Hideki
  • Journal Title: Geofluids Volume: 14 Issue: 4 Pages: 481-494
  • DOI: 10.1111/gfl.12091
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Fluid transport properties in sediments and their role in large slip near the surface of the plate boundary fault in the Japan Trench (2013)
  • Author(s): Tanikawa, W., Hirose, T., Mukoyoshi, H., Tadai, O. and Lin, W
  • Journal Title: Earth and Planetary Science Letters Volume: 382 Pages: 150-160
  • DOI: 10.1016/j.epsl.2013.08.052
  • Peer Reviewed
• [Journal Article] Importance of mechanochemical effects on fault slip behavior during earthquakes (2013)
  • Author(s): Tetsuro Hirono, Wataru Tanikawa, Go Honda, Jun Kameda, Jun-ichi Fukuda, Tsuyoshi Ishikawa
  • Journal Title: Geophysical Research Letters Volume: 40 Issue: 12 Pages: 2988-2992
  • DOI: 10.1002/grl.50609
  • Peer Reviewed
• [Presentation] Porosity and Mineralogy Control on the Thermal Properties of Sediments in Off-Shimokita Deep-Water Coal Bed Basin (2014)
  • Author(s): Wataru Tanikawa
  • Organizer: AGU2014 Fall Meeting
  • Place of Presentation: Moscone center, San Francisco, アメリカ合衆国
  • Year and Date: 2014-12-16
• [Presentation] 三陸堆積盆地の熱・力学物性と海底下深部の温度の推定 (2014)
  • Author(s): 谷川亘, 多田井修, 林為人, 森田澄人, 山田泰広, 真田佳典, 久保雄介, 稲垣史生
  • Organizer: 日本地質学会第121年学術大会
  • Place of Presentation: 鹿児島大学, 鹿児島県鹿児島市
  • Year and Date: 2014-09-14
• [Presentation] IODP Exp.337下北半島沖三陸沖堆積盆地試料の水理特性と間隙構造 (2014)
  • Author(s): 谷川 亘, 多田井 修, 稲垣 史生, Kai-Uwe Hinrichs, 久保 雄介, 大友 陽子
  • Organizer: 日本地球惑星科学連合2014年大会
  • Place of Presentation: パシフィコ横浜, 神奈川県横浜市
  • Year and Date: 2014-04-30
• [Presentation] 下北沖三陸沖堆積盆、IODP C0020サイトにおけるコアおよびカッティングスの物理特性
  • Author(s): 森田 澄人、谷川 亘、村山 雅史、稲垣 史生、Kai-Uwe Hinrichs、久保 雄介
  • Organizer: 2013地球惑星連合大会
  • Place of Presentation: 幕張メッセ、千葉県
• [Presentation] 日本海溝近傍のプレート境界断層浅部の透水性構造
  • Author(s): 谷川 亘、廣瀬 丈洋、林 為人、IODP Expedition 343 Scientific Party
  • Organizer: 2013地球惑星連合大会
  • Place of Presentation: 幕張メッセ、千葉県
• [Presentation] 下北半島沖三陸沖堆積盆地における熱物性の深度分布
  • Author(s): 谷川 亘、多田井 修、森田 澄人、村山 雅史、稲垣 史生、Kai-Uwe Hinrichs, 久保 雄介、IODP Expedition 337 Scientific Party
  • Organizer: 2013地球惑星連合大会
  • Place of Presentation: 幕張メッセ、千葉県
• [Presentation] 下北半島沖三陸沖堆積盆地の熱物性と水理特性の特徴
  • Author(s): 谷川 亘・多田井 修・森田澄人・村山雅史・稲垣史生・Hinrichs Kai-Uwe・久保雄介・IODP Expedition 337 Scientific Party
  • Organizer: 日本地質学会第120年学術大会（仙台大会）
  • Place of Presentation: 東北大学、宮城県