• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Subducted seamounts and their influences on arc magmatism

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

Iwamori Hikaru  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, 上級主任研究員 (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, 首席研究員 (90356444)
Project Period (FY) 2018-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2022)
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海山 / 沈み込み / 火成活動 / カムチャッカ / 日本列島 / 南米 / アフリカ / ホットスポット / 沈み込み帯火成活動 / 日本 / 沈み込み火成活動 / 島弧 / 火山活動
Outline of Final Research Achievements

To elucidate the influences of subducted seamounts and subduction of thermal and material anomalies on the ocean floor (e.g., ridge subduction, which can be regarded as thermal anomalies) on arc magmatism, the genetic conditions of magmas and the related subsurface structures were investigated by petrological and geophysical methods for the volcanoes located in Kamchatka and Japan (particularly, Hakone and Fuji volcanoes) and the ridge subduction zone off Chile, South America. In the Kamchatka, a volcanic cluster influenced by the material of the seamounts was found along the subducting direction of the Emperor Seamount Chain, suggesting the possibility that the influence of the seamounst extends from the forearc to the backarc region. At Hakone-Fuji volcanoes and Chile, the composition of magma supplied from the depths and the subsurface structure have been constrained for future studies.

Academic Significance and Societal Importance of the Research Achievements

海山や海嶺・海台(以降、一括して海山)は地球上10万個以上存在し、海溝に衝突・沈み込んで地震活動に大きな影響を与えることが知られている(例えば茨城沖や茨城県で多数の地震を誘発)。これらの力学的影響に加え、海山の熱的・物質的影響が存在すると予想されるが、それらが島弧変動に与える役割はこれまでほとんど研究されてこなかった。今回の研究により、沈み込んだ海山が、島弧の予期せぬ場所(例えば前弧域)を含む沈み込み帯の広範囲に影響を及ぼしうることが分かった。

Report

(5 results)
  • 2022 Final Research Report ( PDF )
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • Research Products

    (47 results)

All 2023 2022 2021 2020 2019 2018 Other

All Int'l Joint Research (6 results) Journal Article (22 results) (of which Int'l Joint Research: 10 results,  Peer Reviewed: 22 results,  Open Access: 20 results) Presentation (19 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
      2021 Annual Research Report
  • [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] Groundwaters and deep-seated fluid circulation around Aso Volcano, Southwest Japan, revealed by multivariate statistical analysis of the geochemical data2023

    • Author(s)
      Iwamori Hikaru、Nakamura Hitomi、Morikawa Noritoshi、Takahashi Masaaki、Inamura Akihiko、Haraguchi Satoru、Nishizawa Tatsuji、Sakata Shuhei
    • Journal Title

      Journal of Volcanology and Geothermal Research

      Volume: 433 Pages: 107739-107739

    • DOI

      10.1016/j.jvolgeores.2022.107739

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Large-scale structures in the Earth’s interior: Top-down hemispherical dynamics constrained by geochemical and geophysical approaches2022

    • Author(s)
      Iwamori Hikaru、Yoshida Masaki、Nakamura Hitomi
    • Journal Title

      Frontiers in Earth Science

      Volume: 10 Pages: 1-21

    • DOI

      10.3389/feart.2022.1033378

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [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: - Issue: 1 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: 165-182

    • 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 Issue: 6 Pages: 621-635

    • DOI

      10.3103/s014587522006006x

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Origin and Distribution of Geofluids and Their Roles on Geodynamics2019

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

      Journal of Geography (Chigaku Zasshi)

      Volume: 128 Issue: 5 Pages: 761-783

    • DOI

      10.5026/jgeography.128.761

    • NAID

      130007745835

    • ISSN
      0022-135X, 1884-0884
    • Year and Date
      2019-10-25
    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [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

      Comptes Rendus Geoscience

      Volume: 351 Issue: 2-3 Pages: 209-220

    • 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 Issue: 2-3 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 Research

      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] 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 Issue: 9 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 Issue: 1 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] 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
    • Year and Date
      2018-12-25
    • 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

      The Journal of the Geological Society of Japan

      Volume: 124 Issue: 12 Pages: 1049-1054

    • DOI

      10.5575/geosoc.2018.0027

    • NAID

      130007612396

    • ISSN
      0016-7630, 1349-9963
    • Year and Date
      2018-12-15
    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [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

      Geophysical Research Letters

      Volume: 45 Issue: 11 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

      Progress in Earth and Planetary Science

      Volume: 5 Issue: 1 Pages: 1-16

    • DOI

      10.1186/s40645-018-0209-2

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] 強親鉄性元素及びRe-Os同位体系から探るSredinny Range北部(カムチャッカ)のマグマ生成プロセス2022

    • Author(s)
      三ツ出 唯利、西澤 達治、中村 仁美、Churikova Tatiana、Gordeychik Boris、石川 晃、岩森 光
    • Organizer
      JpGU-AGU Joint Meeting 2022
    • Related Report
      2021 Annual Research Report
  • [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2021

    • Author(s)
      西澤 達治、中村 仁美、岩森 光
    • Organizer
      JpGU-AGU Joint Meeting 2021
    • Related Report
      2021 Annual Research Report
  • [Presentation] 高-Mg安山岩及び玄武岩中の強親鉄性元素の特徴とカムチャッカ前弧域における第四紀島弧火成活動の成因2021

    • Author(s)
      西澤 達治、三ツ出 唯利、中村 仁美、Churikova Tatiana、Gordeychik Boris、石川 晃、岩森 光
    • Organizer
      JpGU-AGU Joint Meeting 2021
    • Related Report
      2021 Annual Research Report
  • [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

URL: 

Published: 2018-04-23   Modified: 2024-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi