• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to project page

2002 Fiscal Year Final Research Report Summary

Experimental studies on coupled deformation and chemical reactions

Research Project

Project/Area Number 12440136
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Geology
Research InstitutionKYOTO UNIVERSITY

Principal Investigator

SHIMAMOTO Toshihiko  Graduate School of Science Kyoto University, Professor, 大学院・理学研究科, 教授 (20112170)

Co-Investigator(Kenkyū-buntansha) SHIMOBAYASHI Nobumasa  Graduate School of Science Kyoto University, Associate Professor, 大学院・理学研究科, 助教授 (70235688)
YAMAJI Atsushi  Graduate School of Science Kyoto University, Associate Professor, 大学院・理学研究科, 助教授 (40212287)
OBATA Masaaki  Graduate School of Science Kyoto University, Professor, 大学院・理学研究科, 教授 (20126486)
SHIMIZU Ichiko  Graduate School of Science University of Tokyo, Research Associate, 大学院・理学系研究科, 助手 (40211966)
TSUTSUMI Akito  Graduate School of Science Kyoto University, Research Associate, 大学院・理学研究科, 助手 (90324607)
Project Period (FY) 2000 – 2002
KeywordsRock deformation / Fault zone / fluid / Permeability / pore pressure / fault rheology / thermal pressurization / earthquake mechanisms
Research Abstract

The main purpose of the present studies has been to investigate the role of pore fluids on rock rheology and earthquake initiation processes. We selected Median Tectonic Line, Nojima fault, Neodani fault, Kannawa fault, Yanagase fault and Hanaore fault as representative faults and have measured permeability and storage capacity under deep crustal conditions using an oscillation method and a constant flow method with a deformation and fluid flow gas apparatus. There were only several papers reporting internal and permeability structures when the present studies started, but we have collected over 5,000 permeability data for about 500 specimens collected from those faults. Thermal pressurization (TP), i.e., pore pressure rise due to frictional heating, has been proposed as a mechanism for the weakening of faults at the initiation of earthquakes for over the last three decades, but its significance has remained to be evaluated due to the lack sufficient data on fault-zone permeability. Our data clearly shows that fault zones are variable in permeability structures and that TP will occur for some faults, but not for others. Analyses of TP processes have also shown that the slip weakening distance, D_c, of fault is on the order of several fractions of 1 meter. There has been several orders of magnitude difference in D_c between seismically-determined and laboratory measured D_c for nearly 20 years (D_c paradox). TP processes yield D_c values on the same order of magnitude as determined seismically and high-velocity frictional studies may solve D_c paradox.

  • Research Products

    (16 results)

All Other

All Publications (16 results)

  • [Publications] Lin, A., Shimamoto, T.others: "Comparative study of cataclastic rocks from a drill core and outcrops of the Nojima fault zone in Awaji Iland, Japan"Island Arc. 10. 368-380 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Wibberley, C.Shimamoto, T.: "Internal structure and permeability of major strike-slip fault zones : the Median Tectonic Line in Mie Prefecture, Southwest Japan"Journal of Structural Geology. 25. 59-78 (2003)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Hirose, T.Shimamoto, T.: "Fractal dimension of molten surface as a possible parameter to infer slip-weakening distance of faults from natural pseudotachylytes"Journal of Structural Geology. 25(in press). (2003)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Uehara, S.Shimamoto, T.: "Gas permeability evolution of cataclasite and fault gouge in triaxial compression and its implications for changes in permeability structures of a fault during earthquake cycles"Tectonophysics. (in press). (2003)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Shimamoto, T. Lin, A.: "Is frictional melting equilibrium melting, or non-equilibrium melting?"Journal of Structural Geology. 25(in press). (2003)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Tsutsumi, A.Shimamoto, T., others: "Near-shore flow velocity of Southwest-Hokkaido-Earthquake tsunami"Jour. Waterway, Port and Coastal and Ocean Eng., ASCE. 126. 136-143 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Shimizu, I.: "Nonequilibriun thermodynamics of nonhydrostatically stressed solids"Earthquake Thermodynamics and Phase Transformation in the Earth's Interior (edited by R.Teisseyre and E.Majewski)(Academic Press). 81-102 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Tsutsumi, A., Shimamoto, T., Kawamoto, E., Logan, J. M.: "Near-shore flow velocity of Southwest-Hokkaido-Earthquake tsunami"Jour. Waterway, Port and Coastal and Ocean Eng.. ASCE, 126. 136-143 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Lin, A., Shimamoto, T., Maruyama, T., Shigetomi, M., Miyata, T., Takemura, K., Tanaka, H., Uda, S., Murata, A.: "Comparative study of cataclastic rocks from a driJJ core and outcrops of the Nojima fault zone in Awaji Island, Japan"Island Arc. 10. 368-380 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Wibberley, C. A. J.: "Hydraulic diffiisivity of fault gouge zones and implications for thermal pressurization during seismic slip"Earth Planets Space. 54. 1153-1171 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Hiraga, S., Morunoto, A. and Shimamoto, T.: "Stress effect on thertno luminescence intensities of quartz grains - for the establishment of a fault dating method"Bull. Nara Univ. Educ.. 51. 17-24 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Wibberley, C. A. J. and Shimamoto, T.: "Internal structure and permeability of major strike-slip fault zones: the Median Tectonic Line in Mie Prefecture, Southwest Japan"Jour. Struct. Geol.. 25. 59-78 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Hirose, T. and Shimamoto, T.: "Fractal dimension of molten surface as a possible parameter to infer mechanical behavior of faults from natural pseudotachylytes"Jour. Struct. Geol,. vol. 25 (in press).

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Shimamoto, T., Tanikawa, W., Hirose, T., Mizoguchi, K. and Fukuchi, T.: "High-velocity friction and dynamic motion of the Chelungpu Fault: an insight from laboratoiy experiments on the shallow drill core"Proceedings of ICDP Workshop on Drilling the Chelungpu Fault, Taiwan; Investigating the Physics of Faulting for a Recent large Earthquake, 27-28 Sept, 2001, Taipei and 15 Dec. , 2001, Menlo Park. 70-75 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Uehara, S. and Shimamoto, T.: "Gas permeability evolution of cataclasite and fault gouge in triaxial compression and its implications for changes in permeability structures of fault during earthquake cycle"Tectonophysics. in press.

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Shimizu, I., Teisseyre, R. and Majewski, E., eds.: "Nonflquitibrium thermodynamics of nonhydrostaticaJly stressed solids, in: Earthquake Thermodynamics and Phase Transformation in the Earth's Interior"Academic Press. 81-102 (2001)

    • Description
      「研究成果報告書概要(欧文)」より

URL: 

Published: 2004-04-14  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi