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Hi-resolution analysis of tsunami event from coastal area in Shikoku and Kyushu

Research Project

Project/Area Number 18510156
Research Category

Grant-in-Aid for Scientific Research (C)

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

Principal Investigator

OKAMURA Makoto  Kochi University, Faculty of Science, Professor (10112385)

Co-Investigator(Kenkyū-buntansha) MATSUOKA Hiromi  Kochi University, Faculty of Science, Associate Professor (60222296)
Project Period (FY) 2006 – 2007
Project Status Completed (Fiscal Year 2007)
Budget Amount *help
¥3,810,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥210,000)
Fiscal Year 2007: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2006: ¥2,900,000 (Direct Cost: ¥2,900,000)
KeywordsEarthquake / Tsunami / Tsunami sediments / Natural Disaster / Geology / Nankai Earthquake / Shikoku Island
Research Abstract

The main purpose of this study is reconstruction of the Nankai Earthquake interval recorded as tsunami sediment from shore-lagoon along the Kyushuu and Shikoku Island. Based on our previous study fourteen tsunami sediments were distinguished from 1300yBP to 4500yBP interval. These tsunami sediments are also included crustal subsidence events such as marine plankton yield interval layers. Among these tsunami records eight layers through 3500 years shows remarkable huge earthquake, which interval has 350 years in average.
Additional work on Ryujin-ike in Kyushu, we determined the age of tsunami event which correspond to Tadasu-ike simultaneously. These age are 1600yBP, 1900yBP, 2600yBP, 3000yBP and 3300yBP respectably. Kaniga-ike situated in central Shikoku also yielded three huge tsunami events correlatable to historical records known as Hoei, Shohei and Tenmu Nankai Earthquakes for past 1000 years.
Huge earthquake series such as Hoei-type Nankai Earthquake are determined confirmably through two long-distanced sites in Kyushu and Shikoku along the Nanakai Trough.

Report

(3 results)
  • 2007 Annual Research Report   Final Research Report Summary
  • 2006 Annual Research Report
  • Research Products

    (8 results)

All 2007 2006 Other

All Journal Article (1 results) Presentation (5 results) Remarks (2 results)

  • [Journal Article] Recurrence Intervals of the Hoei-type Nankai Earthquakes2006

    • Author(s)
      Matsuoka, H., Okamura, M., Chida, N., Shimazaki, K.
    • Journal Title

      Eos Trans. AGU (Fall Meet. Suppl., Abstract) 87(52)

    • Related Report
      2006 Annual Research Report
  • [Presentation] 津波堆積物に記録された南海地震の繰り返し間隔2007

    • Author(s)
      松岡 裕美、岡村 眞, 他
    • Organizer
      日本地球惑星科学連合大会2007
    • Place of Presentation
      幕張(千葉県)
    • Year and Date
      2007-05-23
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Recurrence Intervals of Nankai Earthquakes2007

    • Author(s)
      Matsuoka, H
    • Organizer
      Japan Geoscience Union Meeting
    • Place of Presentation
      Makuhari (JAPAN)
    • Year and Date
      2007-05-23
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] 津波堆積物に記録された南海地震の繰り返し間隔2007

    • Author(s)
      松岡 裕美, 他
    • Organizer
      日本地球惑星科学連合大会
    • Place of Presentation
      幕張(千葉県)
    • Year and Date
      2007-05-23
    • Related Report
      2007 Annual Research Report
  • [Presentation] Recurrence Intervals of the Hoei-type Nankai Earthquakes2006

    • Author(s)
      Matsuoka, H., Okamura, M., Chida, N. and Shimazaki, K.
    • Organizer
      American Geophisical Union Fall Meeting 2006
    • Place of Presentation
      San Francisco(USA)
    • Year and Date
      2006-12-14
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Recurrence Intervals of the Hoei-type Nankai Earthquakes2006

    • Author(s)
      Matsuoka, H
    • Organizer
      American Geophysical Union Fall Meeting
    • Place of Presentation
      San Francisco (USA)
    • Year and Date
      2006-12-14
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Remarks] 「研究成果報告書概要(和文)」より

    • URL

      http://sc1.cc.kochi-u.ac.jp/~mako-ok/index.html

    • Related Report
      2007 Final Research Report Summary
  • [Remarks]

    • URL

      http://sc1.cc.kochi-u.ac.jp/~mako-ok/index.html

    • Related Report
      2007 Annual Research Report

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Published: 2006-04-01   Modified: 2016-04-21  

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