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Explanation of volcanic activity by detailed terrace chronology and crustal deformation observation in Io To Island in Ogasawara Archipelago

Research Project

Project/Area Number 21510193
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Natural disaster science
Research Institution国土地理院 (2011)
Geospatial Information Authority of Japan (Geography and Crustal Dynamics Research Center) (2009-2010)

Principal Investigator

IMAKIIRE Tetsuro  国土地理院, 地理地殻活動研究センター, 総括研究官 (60370805)

Co-Investigator(Kenkyū-buntansha) NAKANO Takayuki  国土地理院, 地理地殻活動研究センター, 研究官 (60511962)
SASAKI Keiichi  金沢学院大学, 美術文化学部, 准教授 (50340021)
Co-Investigator(Renkei-kenkyūsha) KOARAI Mamoru  国土地理院, 地理地殻活動研究センター, 室長 (50419876)
SATO Hiroshi  国土地理院, 地理地殻活動研究センター, 主任研究官 (60360468)
OTOI Kosei  国土地理院, 地理地殻活動研究センター, 主任研究官 (60581684)
Research Collaborator OOI Shinzo  国土地理院, 総務部, 係員
YARAI Hiroshi  国土地理院, 測地観測センター, 地震調査官
Project Period (FY) 2009 – 2011
Project Status Completed (Fiscal Year 2011)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2011: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2010: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2009: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywords火山噴火 / 火山活動史 / GPS地殻変動観測 / 化石含有調査 / 古地磁気測定 / 隆起活動史 / 火山編年 / ^<14>C年代測定 / 全岩分析 / 主成分分析 / 漂着軽石 / 地殻変動
Research Abstract

We carried out detailed chronological study on the coastal terraces in Io To island, in Ogasawara Archipelago. By means of<14>^C radiocarbon dating on the fossils of coral and carbonized wood, we estimated the history of the terrace formation, which shows the uplift of Io To Island should be intermittent, not be constant as suggested in the former study(Kaizuka et al, 1985). Recent uplift observed by GPS survey is so rapid that it could be comparable to the remarkable uplift about 500 years ago, when Mt. Motoyama upper terrace was formed, accompanied by the eruption of Mt. Suribachi-yama. This notable crustal deformation suggests following volcanic activities. We can propose a model that notable uplift by the possible magma intrusion would occur before the remarkable volcanic activity of Io To islands, from this study.

Report

(4 results)
  • 2011 Annual Research Report   Final Research Report ( PDF )
  • 2010 Annual Research Report
  • 2009 Annual Research Report
  • Research Products

    (4 results)

All 2012 2011 2010

All Journal Article (1 results) Presentation (3 results)

  • [Journal Article] Preliminary Study of Sedimentary Period of Layer by Using Natural Remanent Magnetization in Io To Island in Ogasawara Archipelago2011

    • Author(s)
      Takayuki NAKANO, Tetsuro IMAKIIRE, Hideo SAKAI and Keiko MINAMI
    • Journal Title

      Bulletin of GSI

      Volume: Vol.59 Pages: 15-20

    • NAID

      40019216998

    • Related Report
      2011 Annual Research Report 2011 Final Research Report
  • [Presentation] 小笠原硫黄島の詳細な段丘編年と地殻変動観測による火山活動史の推定2012

    • Author(s)
      中埜貴元,今給黎哲郎,小荒井衛,乙井康成,大井信三,佐々木圭一
    • Organizer
      日本地球惑星科学連合2012年大会
    • Place of Presentation
      幕張メッセ
    • Year and Date
      2012-05-24
    • Related Report
      2011 Final Research Report
  • [Presentation] 小笠原硫黄島の火山活動と隆起活動2010

    • Author(s)
      今給黎哲郎,小荒井衛,中埜貴元,大井信三,矢来博司,佐藤浩,佐々木圭一
    • Organizer
      日本火山学会2010年秋季大会
    • Place of Presentation
      京都大学
    • Year and Date
      2010-10-09
    • Related Report
      2011 Final Research Report
  • [Presentation] 小笠原硫黄島の火山活動と隆起活動2010

    • Author(s)
      今給黎哲郎・小荒井衛・中埜貴元・大井信三・矢来博司・佐藤浩(国土地理院), 佐々木圭一(金沢学院大学)
    • Organizer
      火山学会秋季大会
    • Place of Presentation
      京都大学
    • Year and Date
      2010-10-09
    • Related Report
      2010 Annual Research Report

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Published: 2009-04-01   Modified: 2020-01-28  

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