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Study of interplate coupling with collision giant Amami platus around Ryokyu arc

Research Project

Project/Area Number 25287112
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypePartial Multi-year Fund
Section一般
Research Field Solid earth and planetary physics
Research InstitutionNagoya University

Principal Investigator

FURUMOTO Muneyoshi  名古屋大学, 環境学研究科, 名誉教授 (80109264)

Co-Investigator(Kenkyū-buntansha) 寺川 寿子  名古屋大学, 環境学研究科, 講師 (30451826)
伊藤 武男  名古屋大学, 環境学研究科, 准教授 (40377982)
佐々木 圭一  金沢学院大学, 基礎教育機構, 准教授 (50340021)
鷺谷 威  名古屋大学, 減災連携研究センター, 教授 (50362299)
Project Period (FY) 2013-04-01 – 2018-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥18,200,000 (Direct Cost: ¥14,000,000、Indirect Cost: ¥4,200,000)
Fiscal Year 2017: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2016: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2015: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2014: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2013: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Keywords地殻変動・海底変動 / テクトニクス / 超巨大地震 / 海岸段丘 / 地殻変動 / 海底変動
Outline of Final Research Achievements

In the subduction zone with back-arc expansion, crustal deformation was observed both effects due to the subducted oceanic plate and expansion of back-arc. In order to identify each component of crustal deformations, we carry out GNSS observation at Yoktoshima and leveling survey in Kikaijima island. As result, we obtain the spatial distribution of interplate coupling and tilt vector at the kikai island. In addition, we estimate 6000 BP at highest marine terrace in north region of Kikaijima island by the geological survey. As a result of modeling for the survey result and the occurrence interval of the past earthquakes using two dimensional finite element method, we obtain that the long-term uplift at kikai-jima is explained by by the geometry of subduction plate. In order to understand the time evolution of vertical deformation, we reveal that the viscoelastic structure at the mantle wedge have important role.

Report

(6 results)
  • 2017 Annual Research Report   Final Research Report ( PDF )
  • 2016 Annual Research Report
  • 2015 Annual Research Report
  • 2014 Annual Research Report
  • 2013 Annual Research Report
  • Research Products

    (4 results)

All 2016 2015

All Presentation (4 results) (of which Int'l Joint Research: 1 results)

  • [Presentation] Time evolution of vertical displacement during Holocene: case of kikai Island, Ryukyu Islands, Japan2016

    • Author(s)
      Takeo Ito, Muneyoshi Furumoto, Kenjiro Matuhiro, Takashi Okuda, Takeshi Sagiya, Shinichiro Horikawa, Kazuya Ito
    • Organizer
      AGU 2016 Fall Meeting
    • Place of Presentation
      San Francisco
    • Year and Date
      2016-12-12
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 有限要素法による喜界島の高速隆起の再現とドローンによる微小海岸段丘の調査2015

    • Author(s)
      伊藤武男,古本宗充,奥田隆,松廣健二郎,大間俊樹
    • Organizer
      地震学会
    • Place of Presentation
      神戸国際会議場
    • Year and Date
      2015-10-27
    • Related Report
      2015 Annual Research Report
  • [Presentation] 喜界島周辺の地殻変動2015

    • Author(s)
      伊藤武男,古本宗充,鷺谷威,堀川信一郎,奥田隆,松廣健二郎,野村晋一,横井大輝,大間俊樹,伊藤和也
    • Organizer
      地球惑星科学連合大会
    • Place of Presentation
      幕張メッセ
    • Year and Date
      2015-05-25
    • Related Report
      2015 Annual Research Report
  • [Presentation] Simulate high-speed uplift history at Kikai-JIma due to collision of Amami Plateau2015

    • Author(s)
      伊藤武男
    • Organizer
      日本台湾地殻変動ワークショップ
    • Place of Presentation
      名古屋大学
    • Year and Date
      2015-04-24
    • Related Report
      2015 Annual Research Report

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Published: 2013-05-21   Modified: 2019-07-29  

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