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Sensitive detection of alkaline cryptotephra layers in deep-sea cores from the Sea of Japan using high-resolution INAA analysis

Research Project

Project/Area Number 17340148
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Geology
Research InstitutionHokkaido University

Principal Investigator

TOYODA Kazuhiro  Hokkaido University, 大学院・地球環境科学研究院, 准教授 (10207649)

Co-Investigator(Kenkyū-buntansha) IKEHARA Ken  独立行政法人産業技術総合研究所, 地質情報研究部門, 研究グループ長 (40356423)
Research Collaborator MACHIDA Hiroshi  東京都立大学, 理学部, 名誉教授
CHUN Jonghwa  韓国, 江原国立大学, 研究員(申請時)
Project Period (FY) 2005 – 2008
Project Status Completed (Fiscal Year 2008)
Budget Amount *help
¥16,380,000 (Direct Cost: ¥15,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2008: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2007: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2006: ¥1,300,000 (Direct Cost: ¥1,300,000)
Fiscal Year 2005: ¥11,700,000 (Direct Cost: ¥11,700,000)
Keywords火山 / 気候変動 / 深海環境 / 地球化学 / 地質学 / クリプトテフラ / 白頭山 / 鬱陵島 / アルカリ岩 / 日本海 / 放射化分析 / 微量元素分析 / 堆積物コア / マイクロテフラ / アルカリ火山 / 海底コア / 広域テラス
Research Abstract

地球温暖化の将来予測に有用な古環境復元の精密年代軸として注目されるクリプトテフラ(肉眼では検出不可な希薄な火山灰層)の高感度な検出法として、放射化分析法による地層の高密度な微量元素分析が有効であると実証した。十数本の日本海海底コア中の最大過去十五万年間の堆積物を走査し、5つの新しい指標となるテフラを検出し年代推定を行い、欝陵島(韓国)と白頭山(中朝国境)から飛来する降下火山灰の履歴を構築にした。

Report

(5 results)
  • 2008 Annual Research Report   Final Research Report ( PDF )
  • 2007 Annual Research Report
  • 2006 Annual Research Report
  • 2005 Annual Research Report
  • Research Products

    (25 results)

All 2008 2007 2006 2005

All Journal Article (6 results) (of which Peer Reviewed: 5 results) Presentation (17 results) Book (2 results)

  • [Journal Article] Cryptotephra detection using high-resolution trace-element analysis of Holocene marine sediments. southwest Japan2008

    • Author(s)
      Lim C., Ikehara K., Toyoda K.
    • Journal Title

      Geochimica et Cosmochimica Acta 72

      Pages: 5022-5036

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Main controlling factors of coral skeletal carbon isotopic composition and skeletal extension rate : High-resolution study at Hainan Island, South China Sea2008

    • Author(s)
      Shimamura M, Irino T, Oba T, Xu G, Lu B, Wang L, Tovoda K
    • Journal Title

      geochemistry geophysics geosystems, 9(4)

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Cryptotephra detection using high-resolution trace-element analysis of Holocene marine sediments, southwest Japan2008

    • Author(s)
      Lim C., Ikehara K., Toyoda K
    • Journal Title

      Geochimica et Cosmochimica Acta 10. 1016 / j. gca. 2008. 07. 021 72(D. O.I参照)

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] High-sensitive elemental analysis Using Multi-parameter Coincidence Spectrometer, GEMINI-II2007

    • Author(s)
      Hatsukawa Y., Miyamoto Y., Toh Y., Oshima M., Gharaie M. H. M., Goto K., Toyoda K.
    • Journal Title

      Journal of Radioanalytical and Nuclear Chemistry 272

      Pages: 273-276

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] High-sensitive elemental analysis Using Multi-parameter Coincidence Spectrometer, GEMINI-II2007

    • Author(s)
      Yuichi Hatsukawa, et al.
    • Journal Title

      Journal of Radioanalytical and Nuclear Chemistry 272

      Pages: 273-276

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Fidelity of δ^<18>O as a proxy for sea surface temperature : Influence of variable coral growth rates on the coral Porites lutea from Hainan Island, China2005

    • Author(s)
      M.Shimamura, T.Oba, G.Xu, B.Lu, L.Wang, M.Murayama, K.Toyoda, A.Winter
    • Journal Title

      Geochemistry Geophysics Geosystems 6

    • Related Report
      2005 Annual Research Report
  • [Presentation] 日本海堆積物コアの中性子放射化分析による第四紀後期のアルカリ岩質テフラ層序の構築2008

    • Author(s)
      任忠完、池原研、豊田和弘
    • Organizer
      日本地球化学会2008年会
    • Place of Presentation
      駒場(東京)
    • Year and Date
      2008-09-19
    • Related Report
      2008 Final Research Report
  • [Presentation] 日本海堆積物コアの中性子放射化分析による第四紀後期のアルカリ岩質テフラ層序の構築2008

    • Author(s)
      任忠完、池原研、豊田和弘
    • Organizer
      日本地球化学会2008年会
    • Place of Presentation
      東京大学駒場(東京)
    • Year and Date
      2008-09-19
    • Related Report
      2008 Annual Research Report
  • [Presentation] Cryptotephra detection by high-resolutiontrace-elementprofiles of hemipelagic sediments.2008

    • Author(s)
      Chungwan LIM、Kazuhiro TOYODA、Ken IKEHARA
    • Organizer
      京都大学原子炉実験所専門研究会
    • Place of Presentation
      熊取(大阪)
    • Year and Date
      2008-01-23
    • Related Report
      2008 Final Research Report
  • [Presentation] Neutron activation analysis of volcanic glasses in alkaline tephra layers at Baitoushan volcano and Ulreung island,Korea2008

    • Author(s)
      UMETSU Akane, MACHIDA Hiroshi, Lim Chungwan, TOYODA Kazuhiro
    • Organizer
      京都大学原子炉実験所専門研究会
    • Place of Presentation
      熊取(大阪)
    • Year and Date
      2008-01-23
    • Related Report
      2008 Final Research Report
  • [Presentation] Cryptotephra detection by high-resolution trace-element profiles of hemipelagic sediments.2008

    • Author(s)
      任忠完、池原研、豊田和弘
    • Organizer
      京都大学原子炉実験所専門研究会
    • Place of Presentation
      京都大学原子炉実験所熊取(大阪)
    • Year and Date
      2008-01-23
    • Related Report
      2007 Annual Research Report
  • [Presentation] Neutron activation analysis of volcanic glasses in alkaline tephra layersat Baitoushan volcano and Ulreung island, Korea.2008

    • Author(s)
      梅津茜、町田洋、豊田和弘
    • Organizer
      京都大学原子炉実験所専門研究会
    • Place of Presentation
      京都大学原子炉実験所熊取(大阪)
    • Year and Date
      2008-01-23
    • Related Report
      2007 Annual Research Report
  • [Presentation] Identification of multiple cryptotephra layers from Ulleung Island and Baitoushan volcanoes detected by INAA at deep-sea cores inthe Japan Sea2007

    • Author(s)
      Chungwan LIM、Kazuhiro TOYODA、Ken IKEHARA
    • Organizer
      日本第四紀学会50周年記念国際シンポジウム
    • Place of Presentation
      産総研(筑波)
    • Year and Date
      2007-11-20
    • Related Report
      2008 Final Research Report
  • [Presentation] Neutron activation analysis of volcanic glasses in alkaline tephra layers at Baitoushan volcano and Ulreung island, Korea2007

    • Author(s)
      UMETSU Akane, MACHIDA Hiroshi, Lim Chungwan, TOYODA Kazuhiro
    • Organizer
      日本第四紀学会50周年記念国際シンポジウム
    • Place of Presentation
      産総研(筑波)
    • Year and Date
      2007-11-20
    • Related Report
      2008 Final Research Report
  • [Presentation] Identification of multiple cryptotephra layers from Ulleung Island and Baitoush an volcanoes detected by INAA at deep-sea cores in the Japan Sea.2007

    • Author(s)
      任忠完、池原研、豊田和弘
    • Organizer
      日本第四紀学会50周年記念事業 国際シンポジウム
    • Place of Presentation
      独立行政法人産業技術総合研究所共用講堂
    • Year and Date
      2007-11-20
    • Related Report
      2007 Annual Research Report
  • [Presentation] Neutron activation analysis of volcanic glasses in alkaline tephra layers at Baitoushan volcano and Ulreung island, Korea.2007

    • Author(s)
      梅津茜、町田洋、豊田和弘
    • Organizer
      日本第四紀学会50周年記念事業 国際シンポジウム
    • Place of Presentation
      独立行政法人産業技術総合研究所共用講堂
    • Year and Date
      2007-11-20
    • Related Report
      2007 Annual Research Report
  • [Presentation] GEOCHEMICAL DETECTION OF ALKALINE CRYPTOTEPHRA LAYERS: AN EXAMPLE OF LAST TERMINATION SEQUENCES IN JAPANESE LAKE SEDIMENTS2007

    • Author(s)
      Toyoda K., Shinozuka Y, Lim C.,, Takemura K., Kitagawa H., Yasuda Y.
    • Organizer
      The 12th International Conference on Modern Trends in Activation Analysis (MTAAl2)
    • Place of Presentation
      首都大(東京)
    • Year and Date
      2007-09-17
    • Related Report
      2008 Final Research Report
  • [Presentation] Geochemicaldetection of multiple cryptotephra layers from Ulleung Island and Baegdusan volcanoes detected by INAA at deep-sea cores in the Sea of Japan2007

    • Author(s)
      任忠完、池原研、豊田和弘
    • Organizer
      地球惑星連合学会
    • Place of Presentation
      幕張メッセ(千葉)
    • Year and Date
      2007-05-22
    • Related Report
      2008 Final Research Report
  • [Presentation] Geochemical detection of multiple cryptotephra layers from Ulleung Island and Baegdusan volcanoes detected by INAA at deep-sea cores in the Sea of Japan.2007

    • Author(s)
      任忠完、池原研、豊田和弘
    • Organizer
      地球惑星連合学会
    • Place of Presentation
      幕張メッセ(千葉)
    • Year and Date
      2007-05-22
    • Related Report
      2007 Annual Research Report
  • [Presentation] 琵琶湖と水月湖の堆積物コア中から放射化分析で検出した複数の齢陵島テフラ2006

    • Author(s)
      豊田和弘、篠塚良嗣、竹村恵二、北川浩之、安田喜憲
    • Organizer
      日本地球化学会2006年会
    • Place of Presentation
      日大(東京)
    • Year and Date
      2006-09-13
    • Related Report
      2008 Final Research Report
  • [Presentation] 放射化分析法を用いた日本海・海底コア中のクリプトテフラ検出法の検討2006

    • Author(s)
      任忠完・豊田和弘・千鍾華・篠塚良嗣・池原研
    • Organizer
      日本地球化学会2006年会
    • Place of Presentation
      日本大学(東京)
    • Year and Date
      2006-09-13
    • Related Report
      2008 Final Research Report
  • [Presentation] 琵琶湖と水月湖の堆積物コア中から放射化分析で検出した複数の轡陵島テフラとその噴出年代2006

    • Author(s)
      豊田和弘、篠塚良嗣、竹村恵二、北川浩之、安田喜憲
    • Organizer
      日本地球惑星科学連合大会
    • Place of Presentation
      幕張メッセ(千葉)
    • Year and Date
      2006-05-15
    • Related Report
      2008 Final Research Report
  • [Presentation] 日本海南部コアから放射化分析により検出された複数の轡陵島系起源のアルカリ岩質テフラ層2006

    • Author(s)
      任忠完、豊田和弘、Jong-Hwa Chun、篠塚良嗣、池原研
    • Organizer
      日本地球惑星科学連合大会
    • Place of Presentation
      幕張メッセ(千葉)
    • Year and Date
      2006-05-15
    • Related Report
      2008 Final Research Report
  • [Book] 紫外線による地表物質への影響2007

    • Author(s)
      豊田和弘
    • Publisher
      北海道大学出版会、オゾン層破壊の科学
    • Related Report
      2008 Final Research Report
  • [Book] オゾン層破壊の科学2007

    • Author(s)
      北海道大学大学院環境科学院編
    • Publisher
      北海道大学出版会
    • Related Report
      2007 Annual Research Report

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Published: 2005-04-01   Modified: 2016-04-21  

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