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沈み込む海山が島弧火山活動に及ぼす影響

Research Project

Project/Area Number 18H03747
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Review Section Medium-sized Section 17:Earth and planetary science and related fields
Research InstitutionThe University of Tokyo

Principal Investigator

岩森 光  東京大学, 地震研究所, 教授 (80221795)

Co-Investigator(Kenkyū-buntansha) 横山 哲也  東京工業大学, 理学院, 教授 (00467028)
石川 晃  東京工業大学, 理学院, 准教授 (20524507)
中村 仁美  国立研究開発法人産業技術総合研究所, 地質調査総合センター, 主任研究員 (60572659)
西澤 達治  山梨県富士山科学研究所, その他部局等, 研究員 (80826579)
石塚 治  国立研究開発法人産業技術総合研究所, 地質調査総合センター, 上級主任研究員 (90356444)
Project Period (FY) 2018-04-01 – 2022-03-31
Project Status Granted (Fiscal Year 2021)
Budget Amount *help
¥44,460,000 (Direct Cost: ¥34,200,000、Indirect Cost: ¥10,260,000)
Fiscal Year 2021: ¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Fiscal Year 2020: ¥6,110,000 (Direct Cost: ¥4,700,000、Indirect Cost: ¥1,410,000)
Fiscal Year 2019: ¥15,600,000 (Direct Cost: ¥12,000,000、Indirect Cost: ¥3,600,000)
Fiscal Year 2018: ¥16,510,000 (Direct Cost: ¥12,700,000、Indirect Cost: ¥3,810,000)
Keywords沈み込み帯火成活動 / 海山 / カムチャッカ / 日本 / 南米 / 沈み込み / 火成活動 / 日本列島 / アフリカ / ホットスポット / 沈み込み火成活動 / 島弧 / 火山活動
Outline of Annual Research Achievements

前年度採取した岩石試料のロシアからの輸送を行い、全岩・鉱物分析、およびデータ解析を進めた。コロナ禍のため、ロシアからの試料輸送は国際荷物便にておこなった。ロシアからの岩石輸送にあたっての輸出許可に時間がかかり、ロシア側研究者の判断で、許可の不要な個別輸送(一つ一つのパッケージを、1か月以上の間をおいて発送)した。このため、一通りの試料輸送が完了したのが2022年に入ってからであったが、到着したものから順番に分析を開始し、これまでに主成分元素組成分析および薄片作成を終了した。
また、日本列島上の火成活動に対する沈み込む海山の影響をを探るため、富士-箱根地域の火山岩の予備研究を開始した。地球化学組成データセット構築・統計解析を目的とし、効率的・高精度な分析方法を探るため、いくつかの試料について複数の処理方法を模索した。特に微量元素濃度については、主成分分析用のガラスビードをもちいたLA-ICP-MS分析の精度や確度を確認した。さらに高次元多変量統計解析の準備を開始した。日本列島に沈み込む海山のうち、茨城沖の海山列(その延長は富士山・箱根の方向に延びる)はHIMU・FOZOとよばれるホットスポット溶岩に類似するが、その組成は十分には把握されていない。将来の試料分析を想定し、類似する組成をもつアフリカ・ホットスポット火山の組成分析を行い、手法の確立とその特徴把握を進めた。
さらに、沈み込む海洋プレートの多様性とその島弧火成活動への影響を調べる一環として、チリ海嶺沈み込み地域の地下構造-火成活動・テクトニクスとの関連性を把握するため、チリ南部の三重会合点(南米プレートに、ナスカプレートと南極プレートの活動的拡大軸が沈み込む場所)周辺の地震探査を進めた。2年間の自然地震観測を終えた海底地震計合計14台の回収を、チリ研究者・チリ海軍の協力を得て行い、日本に向けての輸送作業を開始した。

Current Status of Research Progress
Current Status of Research Progress

2: Research has progressed on the whole more than it was originally planned.

Reason

コロナ禍での困難さ(現地調査不可)にも関わらず、試料輸送が完了し、分析・解析を開始した。また、関連する日本列島、南米などにおける研究も開始し、交付申請の計画内容が、概ね予定どおりに進展した。

Strategy for Future Research Activity

送付済みの試料の、より高度な分析を進めるとともに、日本列島や南米で得られるデータ解析を進める。カムチャッカ半島の火山岩に関しては、同位体分析を、日本列島の火山については、微量元素分析を主に進める。南米での地震計データについては、イベントの検出や震源決定を進め、プレート・熱構造や地震発生との関連性を調べる。

Report

(3 results)
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • 2018 Annual Research Report

Research Products

(41 results)

All 2020 2019 2018 Other

All Int'l Joint Research (5 results) Journal Article (20 results) (of which Int'l Joint Research: 10 results,  Peer Reviewed: 20 results,  Open Access: 19 results) Presentation (16 results) (of which Int'l Joint Research: 8 results,  Invited: 10 results)

  • [Int'l Joint Research] Russian Academy of Sciences(ロシア連邦)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] Russian Academy of Sciences(ロシア連邦)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] Concepcion University/SHOA/University of Chile(チリ)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] Russian Academy of Sciences(ロシア連邦)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] University of Concepcion(チリ)

    • Related Report
      2018 Annual Research Report
  • [Journal Article] Temporal Evolution of Proto-Izu-Bonin-Mariana Arc Volcanism over 10 Myr: Constraints from Statistical Analysis of Melt Inclusion Compositions2020

    • Author(s)
      Hamada Morihisa、Iwamori Hikaru、Brandl Philipp A、Ushikubo Takayuki、Shimizu Kenji、Ito Motoo、Li He、Savov Ivan P
    • Journal Title

      Journal of Petrology

      Volume: - Pages: 1-29

    • DOI

      10.1093/petrology/egaa022

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Compositional heterogeneity of Archean mantle estimated from Sr and Nd isotopic systematics of basaltic rocks from North Pole, Australia, and the Isua supracrustal belt, Greenland2020

    • Author(s)
      Nakamura Hitomi、Sano Ayane、Kagami Saya、Yokoyama Tetsuya、Ishikawa Akira、Komiya Tsuyoshi、Iwamori Hikaru
    • Journal Title

      Precambrian Research

      Volume: 347 Pages: 105803-105803

    • DOI

      10.1016/j.precamres.2020.105803

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Multivariate statistical analyses of rare earth element compositions of spring waters from the Arima and Kii areas, Southwest Japan2020

    • Author(s)
      Iwamori Hikaru, Nakamura Hitomi, Chang Qing, Morikawa Noritoshi, Haraguchi Satoru
    • Journal Title

      GEOCHEMICAL JOURNAL

      Volume: 54 Issue: 4 Pages: 1-1

    • DOI

      10.2343/geochemj.2.0583

    • NAID

      130007891329

    • ISSN
      0016-7002, 1880-5973
    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Thermodynamic modeling of hydrous-melt?olivine equilibrium using exhaustive variable selection2020

    • Author(s)
      Ueki Kenta、Kuwatani Tatsu、Okamoto Atsushi、Akaho Shotaro、Iwamori Hikaru
    • Journal Title

      Physics of the Earth and Planetary Interiors

      Volume: 300 Pages: 106430-106430

    • DOI

      10.1016/j.pepi.2020.106430

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] The Chemical and Isotope Composition of Nitrogen Thermal Groundwaters of the Kuldur Spa (Jewish Autonomous Region, Russia)2020

    • Author(s)
      Kharitonova N. A.、Lyamina L. A.、Chelnokov G. A.、Bragin I. V.、Karabtsov A. A.、Tarasenko I. A.、Nakamura H.、Iwamori H.
    • Journal Title

      Moscow University Geology Bulletin

      Volume: 75 Pages: 621-635

    • DOI

      10.3103/s014587522006006x

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Trace-element characteristics of east-west mantle geochemical hemispheres2019

    • Author(s)
      Hikaru Iwamori, Hitomi Nakamura, Masaki Yoshida, Takashi Nakagawa, Kenta Ueki, Atsushi Nakao, Tatsuji Nishizawa, and Satoru Haraguchi
    • Journal Title

      C.R. Geosci.

      Volume: 351 Pages: 0-0

    • DOI

      10.1016/j.crte.2018.09.007

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] On the implications of the coupled evolution of the deep planetary interior and the presence of surface ocean water in hydrous mantle convection2019

    • Author(s)
      Nakagawa Takashi、Iwamori Hikaru
    • Journal Title

      Comptes Rendus Geoscience

      Volume: 351 Pages: 197-208

    • DOI

      10.1016/j.crte.2019.02.001

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Geochemical mapping of slab-derived fluid and source mantle along Japan arcs2019

    • Author(s)
      Nakamura Hitomi、Iwamori Hikaru、Nakagawa Mitsuhiro、Shibata Tomoyuki、Kimura Jun-Ichi、Miyazaki Takashi、Chang Qing、Vaglarov Bogdan Stefanov、Takahashi Toshiro、Hirahara Yuka
    • Journal Title

      Gondwana Res.

      Volume: 70 Pages: 36-49

    • DOI

      10.1016/j.gr.2019.01.007

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] The geochemistry of water and gas phases from high pCO2 sparkling springs within the northern Sikhote-Alin ridge region (Russian Far East)2019

    • Author(s)
      Kharitonova Natalia、Chelnokov Georgy、Bragin Ivan、Nakamura Hitomi、Iwamori Hikaru、Morikawa Noritoshi、Korzun Anna
    • Journal Title

      E3S Web of Conferences

      Volume: 98 Pages: 01025-01025

    • DOI

      10.1051/e3sconf/20199801025

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Mechanical coupling of the motion of the surface plate and the lower mantle slab: Effects of viscosity hill, yield strength, and depth-dependent thermal expansivity2019

    • Author(s)
      Kaneko Takeo、Nakakuki Tomoeki、Iwamori Hikaru
    • Journal Title

      Physics of the Earth and Planetary Interiors

      Volume: 294 Pages: 106274-106274

    • DOI

      10.1016/j.pepi.2019.106274

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Origin and Distribution of Geofluids and Their Roles on Geodynamics2019

    • Author(s)
      IWAMORI Hikaru、YUKUTAKE Yohei、IIO Yoshihisa、NAKAMURA Hitomi
    • Journal Title

      J. Geogr.

      Volume: 128 Issue: 5 Pages: 761-783

    • DOI

      10.5026/jgeography.128.761

    • NAID

      130007745835

    • ISSN
      0022-135X, 1884-0884
    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Coupled afterslip and transient mantle flow after the 2011 Tohoku earthquake2019

    • Author(s)
      Muto J.、Moore J. D. P.、Barbot S.、Iinuma T.、Ohta Y.、Iwamori H.
    • Journal Title

      Science Advances

      Volume: 5 Pages: 1-8

    • DOI

      10.1126/sciadv.aaw1164

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Fractionation of highly siderophile elements in metal grains from unequilibrated ordinary chondrites: Implications for the origin of chondritic metals2019

    • Author(s)
      Okabayashi Satoki、Yokoyama Tetsuya、Nakanishi Nao、Iwamori Hikaru
    • Journal Title

      Geochimica et Cosmochimica Acta

      Volume: 244 Pages: 197-215

    • DOI

      10.1016/j.gca.2018.10.003

    • Related Report
      2019 Annual Research Report 2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Tiny droplets of ocean island basalts unveil Earth’s deep chlorine cycle2019

    • Author(s)
      Hanyu, T., Shimizu, K., Ushikubo, T., Kimura, J.-I., Chang, Q., Hamada, M., Ito, M., Iwamori, H., Ishikawa, T.
    • Journal Title

      Nature Communications

      Volume: 10 Pages: 60-60

    • DOI

      10.1038/s41467-018-07955-8

    • Related Report
      2019 Annual Research Report 2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Distribution of slab-derived fluids around the edge of the Philippine Sea Plate from Central to Northeast Japan2018

    • Author(s)
      Nakamura Hitomi、Iwamori Hikaru、Ishizuka Osamu、Nishizawa Tatsuji
    • Journal Title

      Tectonophysics

      Volume: 723 Pages: 297-308

    • DOI

      10.1016/j.tecto.2017.12.004

    • NAID

      40021616521

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] GEOFCM: a new method for statistical classification of geochemical data using spatial contextual information2018

    • Author(s)
      YOSHIDA Kenta、KUWATANI Tatsu、YASUMOTO Atsushi、HARAGUCHI Satoru、UEKI Kenta、IWAMORI Hikaru
    • Journal Title

      Journal of Mineralogical and Petrological Sciences

      Volume: 113 Issue: 3 Pages: 159-169

    • DOI

      10.2465/jmps.171127

    • NAID

      130007403328

    • ISSN
      1345-6296, 1349-3825
    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Roles of Hydrous Lithospheric Mantle in Deep Water Transportation and Subduction Dynamics2018

    • Author(s)
      Nakao Atsushi、Iwamori Hikaru、Nakakuki Tomoeki、Suzuki Yujiro J.、Nakamura Hitomi
    • Journal Title

      Geophys. Res. Lett.

      Volume: 45 Pages: 5336-5343

    • DOI

      10.1029/2017gl076953

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] On the evolution of the water ocean in the plate-mantle system2018

    • Author(s)
      Nakagawa Takashi、Iwamori Hikaru、Yanagi Ryunosuke、Nakao Atsushi
    • Journal Title

      Prog Earth Planet Sci.

      Volume: 5 Pages: 0-0

    • DOI

      10.1186/s40645-018-0209-2

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Genesis of REY-rich mud: A new perspective based on independent component analysis2018

    • Author(s)
      安川 和孝、中村 謙太郎、藤永 公一郎、岩森 光、加藤 泰浩
    • Journal Title

      Chikyukagaku

      Volume: 52 Issue: 4 Pages: 171-210

    • DOI

      10.14934/chikyukagaku.52.171

    • NAID

      130007550670

    • ISSN
      0386-4073, 2188-5923
    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Geochemical database of Japanese islands for basement rocks:2018

    • Author(s)
      Haraguchi Satoru、Ueki Kenta、Yoshida Kenta、Kuwatani Tatsu、Mohamed Mika、Horiuchi Shunsuke、Iwamori Hikaru
    • Journal Title

      Jour. Geol. Soc. Japan

      Volume: 124 Issue: 12 Pages: 1049-1054

    • DOI

      10.5575/geosoc.2018.0027

    • NAID

      130007612396

    • ISSN
      0016-7630, 1349-9963
    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] Subduction zone processes with fluid and melt: numerical model and observations2020

    • Author(s)
      Hikaru Iwamori
    • Organizer
      JpGU-AGU Joint Meeting 2020
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Re-Os systematic of volcanic rock from East Cone, Kamchatka Peninsula2020

    • Author(s)
      三ツ出 唯利、西澤 達治、中村 仁美、Tatiana Churikova、Boris Gordeychik、石川 晃、藤田 遼、岩森 光、坂田 周平
    • Organizer
      JpGU-AGU Joint Meeting 2020
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Temporal evolution of proto-Izu-Bonin-Mariana arc volcanism over 10 Ma: Constraints from statistical analysis of melt inclusion compositions2020

    • Author(s)
      浜田 盛久、岩森 光、Brandl Philipp、牛久保 孝行、清水 健二、伊藤 元雄、李 賀、サボブ イヴァン
    • Organizer
      JpGU-AGU Joint Meeting 2020
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] カムチャッカにおけるテクトニクス‐火成活動の特徴:太平洋プレート北端におけるダイナミクスに対する意味2020

    • Author(s)
      澤 達治、中村 仁美、岩森 光
    • Organizer
      JpGU-AGU Joint Meeting 2020
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Subduction zone processes with fluid and melt: numerical model and observations2020

    • Author(s)
      Iwamori, H.
    • Organizer
      JpGU
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] カムチャッカにおけるテクトニクス‐火成活動の特徴:太平洋プレート北端におけるダイナミクスに対する意味2020

    • Author(s)
      西澤 達治、中村 仁美、岩森 光
    • Organizer
      JpGU
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] 岩石組成の統計的特徴量の東西比較による、日本列島島弧の地球化学形成過程の理解2020

    • Author(s)
      原口 悟、上木 賢太、岩森 光
    • Organizer
      JpGU
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] Clustering analysis of Ryugu spectral data obtained by NIRS3 infrared spectrometer onboard Hayabusa2 spacecraft2020

    • Author(s)
      松岡 萌、岩森 光、Domingue Deborah、臼井 寛裕、北里 宏平、岩田 隆浩
    • Organizer
      JpGU
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Temporal evolution of proto-Izu-Bonin-Mariana arc volcanism over 10 Ma: Constraints from statistical analysis of melt inclusion compositions2020

    • Author(s)
      浜田 盛久、岩森 光、Brandl Philipp、牛久保 孝行、清水 健二、伊藤 元雄、李 賀、サボブ イヴァン
    • Organizer
      JpGU
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 多変量解析及び同位体分析に基づく北西太平洋深海堆積物の地球化学的特徴2020

    • Author(s)
      安川 和孝、田中 えりか、宮崎 隆、Bogdan Vaglarov、常 青、大田 隼一郎、中村 謙太郎、藤永 公一郎、町田 嗣樹、岩森 光、加藤 泰浩
    • Organizer
      JpGU
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] Re-Os systematic of volcanic rock from East Cone, Kamchatka Peninsula2020

    • Author(s)
      三ツ出 唯利、西澤 達治、中村 仁美、Tatiana Churikova、Boris Gordeychik、石川 晃、藤田 遼、岩森 光、坂田 周平
    • Organizer
      JpGU
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Chemical geodynamics based on statistical analyses and forward simulation2018

    • Author(s)
      Hikaru Iwamori
    • Organizer
      JpGU
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] カムチャツカ北部,北部Sredinny Rangeにおける火成活動2018

    • Author(s)
      西澤達治, 中村仁美, CHURIKOVA Tatiana, GORDEYCHIK Boris, 石塚 治, 岩森 光
    • Organizer
      JpGU
    • Related Report
      2018 Annual Research Report
  • [Presentation] 島弧における火成活動・火山噴火プロセスの統合的理解に向けて2018

    • Author(s)
      中村仁美, 鈴木雄治郎, 入山 宙, 中尾篤史, 岩森 光
    • Organizer
      JpGU
    • Related Report
      2018 Annual Research Report
  • [Presentation] 沈み込み帯の深部水輸送・ダイナミクスにおける含水スラブマントルの効果2018

    • Author(s)
      中尾篤史, 岩森 光, 中久喜伴益, 鈴木雄冶郎, 中村仁美
    • Organizer
      JpGU
    • Related Report
      2018 Annual Research Report
  • [Presentation] Differentiation process for magma in the arc crust of the Sengan volcanic region, Northeastern Japan, constrained from principal component analysis2018

    • Author(s)
      上木 賢太, 岩森 光
    • Organizer
      JpGU
    • Related Report
      2018 Annual Research Report

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Published: 2018-04-23   Modified: 2022-12-28  

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