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Studies on the Bouguer anomaly of active faults along the western margin of the Kanto plain

Research Project

Project/Area Number 61540286
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field 固体地球物理学
Research InstitutionEarthquake Research Institute, University of Tokyo

Principal Investigator

HAGIWARA Yukio  Earthquake Research Institute, University of Tokyo, 地震研究所, 教授 (10012907)

Co-Investigator(Kenkyū-buntansha) IZUTUYA Sadakatu  Earthquake Research Institute, University of Tokyo, 地震研究所, 助手 (70012929)
OKUBO Shuhei  Earthquake Research Institute, University of Tokyo, 地震研究所, 助手 (30152078)
NAGASAWA Ko  Earthquake Research Institute, University of Tokyo, 地震研究所, 講師 (40012918)
MURATA Ichiro  Earthquake Research Institute, University of Tokyo, 地震研究所, 助教授 (20012916)
Project Period (FY) 1986 – 1988
Project Status Completed (Fiscal Year 1988)
Budget Amount *help
¥1,600,000 (Direct Cost: ¥1,600,000)
Fiscal Year 1988: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 1987: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1986: ¥700,000 (Direct Cost: ¥700,000)
Keywordsactive fault / gravity observation / Bouguer anomaly / left-lateral / strike-slip / 縦ずれ断層 / ブーゲー異常 / 越生-高麗本郷断層 / 立川断層 / 名栗断層 / 重力異常 / 1931年西埼玉地震 / 震源断層
Research Abstract

Gravity observations were made at about 1,500 stations with a LaCoste and Romberg gravimeter over an area of about 1,700 km_2 in the western part of the Tokyo metropolisphere for the purpose of clarifying fault structure there. Our conclusion is as follows:
(1) The Kodama fault (newly discovered by the present survey), the Kushibiki fault and the Kasukawa fault stand continuously in a single fault-line. The 1931 Nishi-Saitama earthquake may have been caused by a joint motion of these faults.
(2) From the topographical point of view the Tachikawa fault is considered to be a vertical fault subsiding southwestward the present gravity survey concludes, however, that this fault may possibly be a left-lateral strike-slip fault including vertical displacements.

Report

(4 results)
  • 1988 Annual Research Report   Final Research Report Summary
  • 1987 Annual Research Report
  • 1986 Annual Research Report
  • Research Products

    (17 results)

All Other

All Publications (17 results)

  • [Publications] 萩原幸男 他: 地震研究所彙報. 61. 563-586 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] 萩原幸男 他: 地震研究所彙報. 62. 311-327 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] 萩原幸男 他: 地震研究所彙報. 63. 33-50 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] 萩原幸男 他: 地震研究所彙報. 63. 115-129 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Hagiwara,Y.;Murata,I.;Tajima,H.;Nagasawa,K.;Izutuya,S.; Okubo,S.: "Gravity study of active faults (1) - Detection of the 1931 Nishi-Saitama earthquake fault -" Bulletin of Earthquake Research Institute. 61. 563-586 (1986)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Hagiwara,Y.;Nagasawa,K.;Izutuya,S.;Kotake,Y.; Okubo,S.: "Gravity study of active faults (2) - Detection of faults along the northeastern margin of the Kanto Mountains -" Bulletin of Earthquake Research Institute. 62. 311-327 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Hagiwara,Y.;Nagasawa,K.;Izutuya,S.;Kotake,Y.; Okubo,S.: "Gravity study of active faults (3) - Ogose-Komahongo fault and the northern part of Tachikawa fault -" Bulletin of Earthquake Research Institute. 63. 33-50 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Hagiwara,Y.;Murata,I.;Nagasawa,K.;Izutuya,S.;Kotake,Y.; Okubo.S.: "Gravity study of active faults (4) - Detection of Tachikawa fault -" Bulletin of Earthquake Research Institute. 63. 115-129 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] 萩原幸男 他: 地震研究所彙報. 61. 563-586 (1986)

    • Related Report
      1988 Annual Research Report
  • [Publications] 萩原幸男 他: 地震研究所彙報. 62. 311-327 (1987)

    • Related Report
      1988 Annual Research Report
  • [Publications] 萩原幸男 他: 地震研究所彙報. 63. 33-50 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] 萩原幸男 他: 地震研究所彙報. 63. 115-129 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] 萩原幸男,村田一郎,田島広一,長沢工,井筒屋貞勝,大久保修平: 地震研究所彙報. 61. 563-586 (1986)

    • Related Report
      1987 Annual Research Report
  • [Publications] 萩原幸男,長沢工,井筒屋貞勝,小竹美子,大久保修平: 地震研究所彙報. 62. 309-325 (1987)

    • Related Report
      1987 Annual Research Report
  • [Publications] 萩原幸男,長沢工,井筒屋貞勝,小竹美子,大久保修平: 地震研究所彙報. 63. (1988)

    • Related Report
      1987 Annual Research Report
  • [Publications] 萩原幸男: 地震研究所彙報. 61. (1986)

    • Related Report
      1986 Annual Research Report
  • [Publications] 萩原幸男: 地震予知研究シンポジウム. (1987)

    • Related Report
      1986 Annual Research Report

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Published: 1987-03-31   Modified: 2016-04-21  

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