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Causation between various earthquake precursors and an earthquake on the critical phenomena

Research Project

Project/Area Number 26350483
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Natural disaster / Disaster prevention science
Research InstitutionThe University of Tokyo

Principal Investigator

Uyeda Seiya  東京大学, 地震研究所, 名誉教授 (60011459)

Co-Investigator(Kenkyū-buntansha) 鴨川 仁  東京学芸大学, 教育学部, 准教授 (00329111)
上嶋 誠  東京大学, 地震研究所, 准教授 (70242154)
Project Period (FY) 2014-04-01 – 2017-03-31
Project Status Completed (Fiscal Year 2016)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2015: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords地震 / 臨界現象 / ナチュラル・タイム / 地震先行現象
Outline of Final Research Achievements

We investigated how to identify the onset of critical state before large earthquakes, by applying the natural time analysis method, which is useful for analysis of critical phenomena, to the time series of seismicity. For large earthquakes in Japan, we found it was possible by this method to identify the time of entry to the precursory stage, i.e. the beginning of the critical state
. The regions entering the critical state were located around the epicenters of the impending large earthquakes. In addition, we can be justified to consider that the critical state was found starting about two months before the 2011 M9.0 Tohoku earthquake, which was coincident with the appearance of other precursory phenomena.

Report

(4 results)
  • 2016 Annual Research Report   Final Research Report ( PDF )
  • 2015 Research-status Report
  • 2014 Research-status Report

Research Products

(6 results)

All 2017 2016 2015 Other

All Int'l Joint Research (1 results) Journal Article (4 results) (of which Peer Reviewed: 4 results,  Open Access: 1 results,  Acknowledgement Compliant: 2 results) Book (1 results)

  • [Int'l Joint Research] アテネ大学物理学科(ギリシャ)

    • Related Report
      2016 Annual Research Report
  • [Journal Article] Seismicity prior to the 2016 Kumamoto earthquakes2016

    • Author(s)
      K. Nanjo, J. Izutsu, Y. Orihara, N. Furuse, S. Togo, N. Nitta, T. Okada, R. Tanaka, M. Kamogawa, T. Nagao
    • Journal Title

      Earth Planet Space

      Volume: 68:187 Pages: 1-10

    • DOI

      10.1186/s40623-016-0558-2

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Survey of Well Water Anomaly around Sanriku Region in Japan Preceding the 2011 off the Pacific coast of Tohoku Earthquake2016

    • Author(s)
      織原義明, 鴨川仁
    • Journal Title

      BSSJ

      Volume: 69 Issue: 0 Pages: 31-34

    • DOI

      10.4294/zisin.69.31

    • NAID

      130005433828

    • ISSN
      0037-1114, 1883-9029, 2186-599X
    • Related Report
      2016 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Current affairs in earthquake prediction in Japan2015

    • Author(s)
      Seiya Uyeda
    • Journal Title

      J. Asian Earth Sci.

      Volume: 114 Pages: 431-434

    • DOI

      10.1016/j.jseaes.2015.07.006

    • Related Report
      2015 Research-status Report
    • Peer Reviewed
  • [Journal Article] Spatiotemporal variation of seismicity before major earthquakes in the Japanese area and their relation with the epicentral locations2015

    • Author(s)
      Sarlis, N. V., E. S. Skordas, P. A. Varotsos, T. Nagao, M. Kamogawa, and S. Uyeda
    • Journal Title

      Proc. Nat. Acad. Sci.

      Volume: 112 Pages: 986-989

    • DOI

      10.1073/pnas.1422893112

    • Related Report
      2014 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Book] Microsatellites observing atmospheric and space electricity for the science of serious natural disasters: A Challenge to their mitigations, Innovative Ideas on Micro/Nano Satellite Missions and Systems2017

    • Author(s)
      Togo, S., K. Miyata, H. Nitta, S. Takahashi, K. Tanaka, T. Okada, Y. Suzuki, Y. Orihara, and M. Kamogawa
    • Total Pages
      218
    • Publisher
      Technologies and Applications
    • Related Report
      2016 Annual Research Report

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Published: 2014-04-04   Modified: 2018-03-22  

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