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Establishment for accurate correlation of tsunami deposit layer, based on dense core sample and comprehensive analysis

Research Project

Project/Area Number 17K18532
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Research Field Geography, Cultural anthropology, Folklore, and related fields
Research InstitutionTokyo Metropolitan University

Principal Investigator

Ishimura Daisuke  首都大学東京, 都市環境科学研究科, 助教 (00736225)

Project Period (FY) 2017-06-30 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2019: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2018: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2017: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Keywords津波堆積物 / 三陸海岸 / 側方対比 / 放射性炭素年代測定 / 円磨度 / 放射性炭素年代 / 化学分析 / 画像解析 / 東北地方太平洋岸
Outline of Final Research Achievements

This study investigated the stratigraphy of tsunami deposits, geological features, high-precision ages, and paleoenvironmental information for establishment of better spatial correlation of tsunami deposits . The samples we used were tsunami deposits interbedded within marsh sediments on the Pacific coast of the Tohoku region. As a result, the tsunami deposit itself holds a lot of information, and extracting them properly leads to new tsunami deposit research. Researcher’s sediment correlation generally inhere subjective interpretation, therefore the combination of them with objective indicators provides more reliable correlations.

Academic Significance and Societal Importance of the Research Achievements

津波堆積物研究は、地震メカニズムの解明や津波ハザード評価にとって非常に重要な役割を担う。2004年スマトラ島沖地震、2011年東北地方太平洋沖地震以降、世界各地で津波堆積物研究が進められ、新たなことがわかってきている。一方、津波堆積物個々の確実性や信頼度といった議論も必要であり、それらの情報をどのようにまとめ、評価し、地震・津波ハザードリスク評価につなげていくかが課題である。そこで、本研究では、ある地域内に分布する津波堆積物の認定、側方対比、それらの数をより確実にするために、複数の指標を用いて検討し、より適切かつ効率的な津波堆積物研究方法の確立を目指した。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (13 results)

All 2020 2019 2018 2017

All Journal Article (6 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 6 results,  Open Access: 3 results) Presentation (7 results) (of which Int'l Joint Research: 3 results)

  • [Journal Article] Proximal-distal fall deposit correlation of VEI‐5 tephra (Towada‐Chuseri) from Towada volcano, northeast Japan2020

    • Author(s)
      Ishimura, D., Hiramine, R.
    • Journal Title

      Journal of Quaternary Science

      Volume: 35 Issue: 1-2 Pages: 334-348

    • DOI

      10.1002/jqs.3161

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Re-examination of the ages of paleo-tsunami deposits in Onuma, Miyagi Prefecture, northeast Japan2019

    • Author(s)
      石村大輔
    • Journal Title

      Active Fault Research

      Volume: 2019 Issue: 51 Pages: 53-59

    • DOI

      10.11462/afr.2019.51_53

    • NAID

      130007791236

    • ISSN
      0918-1024, 2186-5337
    • Year and Date
      2019-12-25
    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Paleo-tsunami deposit research on the Sanriku Coast since the 2011 Tohoku-oki earthquake2019

    • Author(s)
      石村大輔
    • Journal Title

      The Quaternary Research (Daiyonki-Kenkyu)

      Volume: 58 Issue: 2 Pages: 175-186

    • DOI

      10.4116/jaqua.58.175

    • NAID

      130007659512

    • ISSN
      0418-2642, 1881-8129
    • Year and Date
      2019-04-01
    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Palaeo-tsunami inundation distances deduced from roundness of gravel particles in tsunami deposits2019

    • Author(s)
      Ishimura, D., Yamada, K.
    • Journal Title

      Scientific Reports

      Volume: 9 Issue: 1 Pages: 10251-10251

    • DOI

      10.1038/s41598-019-46584-z

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Re-examination of the age of historical and paleo-tsunami deposits at Koyadori on the Sanriku Coast, Northeast Japan2017

    • Author(s)
      Ishimura Daisuke
    • Journal Title

      Geoscience Letters

      Volume: 4 Issue: 1 Pages: 11-11

    • DOI

      10.1186/s40562-017-0077-4

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Holocene environmental changes and paleo-tsunami history in Onuma on the southern part of the Sanriku Coast, northeast Japan2017

    • Author(s)
      Ishimura,D. and Miyauchi,T.
    • Journal Title

      Marine Geology

      Volume: 386 Pages: 126-139

    • DOI

      10.1016/j.margeo.2017.01.011

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Lateral correlation of tsunami deposits since ca 6000 cal BP at Koyadori, Yamada Town, Iwate Prefecture, based on sedimentary facies, geochemical signature, gravel roundness, and radiocarbon dating2020

    • Author(s)
      Ishimura, D. and Yamada, K.
    • Organizer
      Hokudan 2020 International Symposium on Active Faulting
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] イベント堆積物中の礫の形態に着目した給源と運搬過程の推定:岩手県山田町小谷鳥の津波堆積物を例として2020

    • Author(s)
      石村大輔・山田圭太郎
    • Organizer
      2020年日本地理学会春季学術大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 三陸海岸に分布する869年貞観津波に対比されるイベント堆積物の特徴2018

    • Author(s)
      石村大輔
    • Organizer
      日本地震学会2018年度秋季大会
    • Related Report
      2018 Research-status Report
  • [Presentation] 礫粒子の画像解析に基づく津波堆積物の給源と運搬過程2018

    • Author(s)
      石村大輔・山田圭太郎
    • Organizer
      日本地球惑星科学連合2018年大会
    • Related Report
      2018 Research-status Report
  • [Presentation] Historical and paleo-tsunami deposits on the Sanriku Coast, northeast Japan2017

    • Author(s)
      Daisuke Ishimura
    • Organizer
      the 8th International INQUA Meeting on Paleoseismology, Active Tectonics and Archeoseismology
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Progress of historical and paleo-tsunami deposit research on the Sanriku Coast after the 2011 Tohoku tsunami2017

    • Author(s)
      Daisuke Ishimura
    • Organizer
      French-Japanese Week on Disaster Risk Reduction, French-Japanese workshop on the “Sedimentary signature of tsunamis”
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] 三陸海岸における津波堆積物研究2017

    • Author(s)
      石村大輔
    • Organizer
      日本第四紀学会2017年大会
    • Related Report
      2017 Research-status Report

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Published: 2017-07-21   Modified: 2021-02-19  

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