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Inland Earthquakes : Tectonics and Hazard Implication

Research Project

Project/Area Number 07680485
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Natural disaster science
Research InstitutionGifu University

Principal Investigator

YAIRI Kenji  Gifu University, Faculty of Engineering, Professor, 工学部, 教授 (20022650)

Co-Investigator(Kenkyū-buntansha) KOJIMA Satoru  Gifu University, Faculty of Engineering, Professor, 工学部, 教授 (20170243)
KANAORI Yuji  Yamaguchi University, Faculty of Science, Professor, 理学部, 教授 (60194883)
Project Period (FY) 1995 – 1997
Project Status Completed (Fiscal Year 1997)
Budget Amount *help
¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 1997: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1996: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1995: ¥1,000,000 (Direct Cost: ¥1,000,000)
KeywordsACTIVE FAULT / EARTHQUAKES / HAZAAD / INLAND EARTHQUAKES / REGIONAL TECTONICS / STRUCTURAL GEOLOGY / CENTRAL JAPAN
Research Abstract

Based on a block structure model of central Japan, an examination was conducted of the space-time distribution patterns of destructive earthquakes. The distribution patterns revealed a periodicity in earthquake activity and the existence of seismic gaps.
A one-dimensional Stick-slip model, which is introduced to explain the fractal features of earthquake phenomena is applied to describe the destructive earthquake occurrences in central and south-west Japan. Space time patterns of events are simulated and the predictability is discussed. On the basis of the block-rotation model, epicenters of historical destructive earthquakes with magnitude 6.4 ro greater are relocated to the tectonic or block boundary lines. This model has revealed that these events show a periodicity of about 1000 years of active and quiet alternative intervals. In each active period, individual block boundary lines gene[rate several large earthqukes without overlapping rupture areas. The space-time pattern and moment release rate ofr the Hanaore-Kongo Fault Line can be represented well with the one-dimensional stick-slip model. The seismic coupling of large offshore earthquakes along the Nankai trough is also found to be well modeled by this model. This model may be useful for estimation of seismic risk in this region. Further, this model can be applied to see the situation of the M7.2 Kobe earthquake and interpret this earthquake to be the event that comes from the block structure in later section.

Report

(4 results)
  • 1997 Annual Research Report   Final Research Report Summary
  • 1996 Annual Research Report
  • 1995 Annual Research Report
  • Research Products

    (13 results)

All Other

All Publications (13 results)

  • [Publications] Matsuzaki, M.: "Modeling of the Drteraction between destructive inland earthquakes and large off coast earthquakes in central and south-west Japan." Engineering Geology. 43. 169-176 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Kanaori, Y.: "The 1995 7.2 magnitude Kobe earthquake and the Arima-Takatsuki Tectonic line : implications of the seismic risk for centrel Japan." Engineering Geology. 43. 135-150 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] 金折 裕司: "西南日本のマイクロプレート・モデルと内陸地震:1995年兵庫県南部地震(M7.2)の発生を考える." 地震第2事情. 49. 125-139 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] 金折 裕司: "活断層系" 近未来社, 228 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Matsuzaki, M.: "Modeling of the interaction between destructive inland earthquakes and large off coast earthquakes in central and south-west Japan" Eng.Geol.Vol.43. 169-176 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Kanaori, Y.: "The 1995 7.2 magnitude Kobe earthquake and the Arima-Takatsuki tectonic line : implications of the seismic risk for central Japan" Eng.Geol.Vol.43. 135-150 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Kanaori, Y.: "Microplate model and large inland earthquakes of Southwest Japan : Implications for generation of the 1995 M7.2 Hyogo-ken-nanbu Earthquake. (in Japanese with English abstr.)" Jishin 2.Vol.49. 125-139 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Matsuzaki,M.: "Modeling of the interaction between destructive inland earthquakes and large off coast earthquakes in central and south-west Japan." Engineering Geology. 43. 169-176 (1996)

    • Related Report
      1997 Annual Research Report
  • [Publications] Kanaori,Y.: "The 1995 7.2 magnitude Kobe earthquake and the Arima-Takatsuki tectonic line:implications of the seismic risk for central Japan." Engineering Geology. 43. 135-150 (1996)

    • Related Report
      1997 Annual Research Report
  • [Publications] 金折裕司: "西南日本のマイクロプレート・モデルと内陸大地震:1995年兵庫県南部地震(M7.2)の発生を考える." 地震第2韓. 49. 125-139 (1996)

    • Related Report
      1997 Annual Research Report
  • [Publications] Matsuzaki,M.,Kawakami,S.,Kanaori,Y.and Yairi,K.: "Modeling of the interaction between destructive inland earthquakes and large off coast earthquakes in central and south-west Japan." Engineering Geology. 43・2/3. 169-176 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Kanaori,Y.and Kawakami,S.: "The 1995 7.2 magnitude Kobe earthquake and the Arima-Takatsuki tectonic line : implications of the seismic risk for central Japan." Engineering Geology. 43・2/3. 135-150 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 金折裕司: "「マイクロプレート」が内陸大地震を引き起こす" 最新科学論シリーズ(学習研究社). 54-64 (1995)

    • Related Report
      1995 Annual Research Report

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Published: 1995-04-01   Modified: 2016-04-21  

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