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2019 Fiscal Year Annual Research Report

Dynamic behaviour of core and mantle materials

Planned Research

Project AreaInteraction and Coevolution of the Core and Mantle: Toward Integrated Deep Earth Science
Project/Area Number 15H05827
Research InstitutionOkayama University

Principal Investigator

芳野 極  岡山大学, 惑星物質研究所, 教授 (30423338)

Co-Investigator(Kenkyū-buntansha) 西原 遊  愛媛大学, 地球深部ダイナミクス研究センター, 准教授 (10397036)
平賀 岳彦  東京大学, 地震研究所, 准教授 (10444077)
太田 健二  東京工業大学, 理学院, 准教授 (20727218)
久保 友明  九州大学, 理学研究院, 教授 (40312540)
安東 淳一  広島大学, 理学研究科, 教授 (50291480)
Project Period (FY) 2015-06-29 – 2020-03-31
Keywords熱伝導 / 電気伝導度 / 拡散 / レオロジー / 核 / マントル / 変形実験 / 高圧
Outline of Annual Research Achievements

熱・物質輸送過程の観点から地球深部物質の物性測定の研究を推進し、最終年度である今年度は以下のような成果が得られた。核マントル境界での元素、物質の相互作用の実験の成果を論文として公表した。外核の熱伝導率を検証するために、マルチアンビル装置を用いて溶融状態の金属の電気伝導度測定を行ない、20GPaまでの圧力で2000Kを超える条件で鉄と白金の測定に成功した。DACを用いた熱伝導率の測定では、今まで行われてきた常温での測定に加え、2000Kまでの高温での測定法を開発し、下部マントル最下部の鉱物の熱伝導測定に成功した。その結果、地球内部の熱輸送は軽元素やマントル主要鉱物の違いによらず、マントル対流に伴うマントル内部の温度不均質によって熱流量の地域差を生じさせることが示唆される。
地球深部の流動ダイナミクスに関して、KEK, NE7Aに導入したD111型ガイドブロックを用いた高圧変形実験を推進した。内核で安定相とされるhcp鉄の安定領域で高温高圧変形その場観察を引き続き行い、この相の安定条件で流動則を詳細に決定した。また、同装置を用いて下部マントルで最も優勢な鉱物であるブリッジマナイトの変形構成則の決定にも成功し、ブリッジマナイトはマントル遷移層のワズレアイトやリングウッダイトに比較して一桁程度強度が強いことが明らかとなった。沈み込んだスラブの振る舞いを制約するため、せん断変形場でMg2SiO4のオリビンースピネル相転移実験、NaNiF3のペロフスカイトのポストペロフスカイト相への相転移機構、相転移に伴い細粒化した岩石の粒成長則の決定を行った。アナログ物質の常圧における粒成長則実験、変形実験の結果からは、下部マントルで卓越するクリープ機構は拡散クリープであり、D"層で観測される結晶の選択配向は粒子回転によって形成され得ることが示唆された。

Research Progress Status

令和元年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

令和元年度が最終年度であるため、記入しない。

  • Research Products

    (56 results)

All 2020 2019 Other

All Int'l Joint Research (2 results) Journal Article (22 results) (of which Int'l Joint Research: 7 results,  Peer Reviewed: 22 results,  Open Access: 2 results) Presentation (32 results) (of which Int'l Joint Research: 17 results,  Invited: 4 results)

  • [Int'l Joint Research] University College London(英国)

    • Country Name
      UNITED KINGDOM
    • Counterpart Institution
      University College London
  • [Int'l Joint Research] 中国科学技術院(中国)

    • Country Name
      CHINA
    • Counterpart Institution
      中国科学技術院
  • [Journal Article] Grain boundary diffusion of W in lower mantle phase with implications for isotopic heterogeneity in oceanic island basalts by core-mantle interactions2020

    • Author(s)
      T. Yoshino, Y. Makino, T. Suzuki, T. Hirata
    • Journal Title

      Earth and Planetary Science Letters

      Volume: 530 Pages: 115887

    • DOI

      10.1016/j.epsl.2019.115887

    • Peer Reviewed
  • [Journal Article] Temperature-enhanced electrical conductivity anisotropy in partially molten peridotite under shear deformation2020

    • Author(s)
      B. Zhang, T. Yoshino
    • Journal Title

      Earth and Planetary Science Letters

      Volume: 530 Pages: 115922

    • DOI

      10.1016/j.epsl.2019.115922

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Electrical conductivity of omphacite as a function of water content and implications for high conductivity anomalies in the Dabie-Sulu UHPM belts and Tibet2020

    • Author(s)
      B. Zhang, C. Zhao, J. Ge, T. Yoshino
    • Journal Title

      Journal of Geophysical Research

      Volume: 125 Pages: 12523-12536

    • DOI

      10.1029/2019JB018826

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Technique, cell assembly and measurement of T-dependent electrical resistivity of liquid Fe devoid of contamination at P, T conditions2020

    • Author(s)
      I. Ezenwa, T. Yoshino
    • Journal Title

      Review of Scientific Instruments

      Volume: 91 Pages: 23903

    • DOI

      10.1063/1.5112045

    • Peer Reviewed
  • [Journal Article] Pressure dependence of graphitization: Implications for rapid recrystallization of carbonaceous material in a subduction zone2020

    • Author(s)
      Y. Nakamura, T. Yoshino, M. Satish-Kumar
    • Journal Title

      Contributions to Mineralogy and Petrology

      Volume: 175 Pages: 32

    • DOI

      10.1007/s0041 0-020-1667-2

    • Peer Reviewed / Open Access
  • [Journal Article] Measurement of the Seebeck coefficient under high pressure by dual heating2020

    • Author(s)
      T. Yoshino, R. Wang, H. Gomi, Y. Mori
    • Journal Title

      Review of Scientific Instruments

      Volume: 91 Pages: 35115

    • DOI

      10.1063/1.5143525

    • Peer Reviewed
  • [Journal Article] Effect of pressure on temperature measurements using WRe thermocouple and its geophysical impact2020

    • Author(s)
      Yu Nishihara, Shunta Doi, Sho Kakizawa, Yuji Higo, and Yoshinori Tange
    • Journal Title

      Physics of the Earth and Planetary Interiors

      Volume: 298 Pages: 106348

    • DOI

      10.1016/j.pepi.2019.106348

    • Peer Reviewed
  • [Journal Article] Vickers indentation tests on olivine: size effects2020

    • Author(s)
      Sanae Koizumi, Takehiko Hiraga, Tohru Suzuki
    • Journal Title

      Physics and Chemistry of Minerals

      Volume: 47 Pages: 8

    • DOI

      10.1007/s00269-019-01075-5

    • Peer Reviewed
  • [Journal Article] Thermal expansion of natural mantle spinel using in situ synchrotron X-ray powder diffraction2019

    • Author(s)
      J. Yamamoto, T. Yoshino, D. Yamazaki, Y. Higo, Y. Tange, J. Torimoto
    • Journal Title

      Journal of Material Sciences

      Volume: 54 Pages: 139-148

    • DOI

      10.1007/s10853-018-2848-5

    • Peer Reviewed
  • [Journal Article] Effect of water on the magnesite-iron reaction with implication for the fate of carbonates in the deep mantle2019

    • Author(s)
      N.S. Martirosyan, A. Shatskiy, A.D. Chanyshev, K.D. Litasov, T. Yoshino
    • Journal Title

      Lithos

      Volume: 326-327 Pages: 435-445

    • DOI

      10.1016/j.lithos.2019.01.004

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Phase transition of wadsleyite-ringwoodite in the system Mg2SiO4-Fe2SiO42019

    • Author(s)
      N. Tsujino, T. Yoshino, D. Yamazaki, M. Sakurai, W. Sun, F. Xu, Y. Tange, Y. Higo
    • Journal Title

      American Mineralogists

      Volume: 104 Pages: 588-594

    • DOI

      10.2138/am-2019-6823

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] The effect of water on Fe-Mg interdiffusion rates in ringwoodite and estimation of water content in the mantle transition zone2019

    • Author(s)
      B. Zhang, T. Yoshino, C. Zhao
    • Journal Title

      Journal of Geophysical Research

      Volume: 124 Pages: 2510-2524

    • DOI

      10.1029/2018JB016415

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Penetration of molten iron alloy into the lower mantle phase2019

    • Author(s)
      T. Yoshino
    • Journal Title

      Comptes Rendus Geoscience

      Volume: 351 Pages: 171-181

    • DOI

      10.1016/j.crte.2018.06.013

    • Peer Reviewed
  • [Journal Article] High pressure generation in the Kawai-type multianvil apparatus equipped with tungsten carbide anvils and sintered diamond anvils and X-ray observation on CaSnO3 and (Mg,Fe)SiO32019

    • Author(s)
      D. Yamazaki, E. Ito, T. Yoshino, N. Tsujino, A. Yoneda, H. Gomi, Jaseem V., M. Sakurai, Y. Zhang, Y. Higo, Y. Tange
    • Journal Title

      Comptes Rendus Geoscience

      Volume: 351 Pages: 253-259

    • DOI

      10.1016/j.crte.2018.07.004

    • Peer Reviewed
  • [Journal Article] Effect of iron content on thermal conductivity of olivine with implications for cooling history of rocky planets2019

    • Author(s)
      Y. Zhang, T. Yoshino, A. Yoneda, M. Osako
    • Journal Title

      Earth and Planetary Science Letters

      Volume: 519 Pages: 109-119

    • DOI

      10.1016/j.epsl.2019.04.048

    • Peer Reviewed
  • [Journal Article] H-D interdiffusion in single crystal olivine: implications for electrical conductivity in the upper mantle2019

    • Author(s)
      W. Sun, T. Yoshino, M. Kuroda, N. Sakamoto, H. Yurimoto
    • Journal Title

      Journal of Geophysical Research

      Volume: 124 Pages: 5696-5707

    • DOI

      10.1029/2019JB017576

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Fate of water in subducted hydrous sediments deduced from stability fields of FeOOH and AlOOH up to 20 GPa2019

    • Author(s)
      T. Yoshino, E. Baker, K. Duffey
    • Journal Title

      Physics of Earth and Planetary Interiors

      Volume: 294 Pages: 106295

    • DOI

      10.1016/j.pepi.2019.106295

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Resistivity, Seebeck coefficient and thermal conductivity of platinum at high pressure and temperature2019

    • Author(s)
      H. Gomi, T. Yoshino
    • Journal Title

      Physical Review B

      Volume: 100 Pages: 214302

    • DOI

      10.1103/PhysRevB.100.214302

    • Peer Reviewed
  • [Journal Article] High-temperature electrical resistivity measurements of hcp iron to Mbar pressure in an internally resistive heated diamond anvil cell2019

    • Author(s)
      Sho Suehiro, Tatsuya Wakamatsu, Kenji Ohta, Kei Hirose, Yasuo Ohishi
    • Journal Title

      High Pressure Research

      Volume: 39 Pages: 579-587

    • DOI

      10.1063/1.5143526

    • Peer Reviewed
  • [Journal Article] Hydrogen-Storing Salt NaCl(H2) Synthesized at High Pressure and High Temperature2019

    • Author(s)
      Takahiro Matsuoka, Shu Muraoka, Takahiro Ishikawa, Ken Niwa, Kenji Ohta, Naohisa Hirao, Saori Kawaguchi, Yasuo Ohishi, Katsuya Shimizu, Shigeo Sasaki
    • Journal Title

      The Journal of Physical Chemistry C

      Volume: 123 Pages: 25074-25080

    • DOI

      10.1021/acs.jpcc.9b06639

    • Peer Reviewed
  • [Journal Article] Effect of spin transition of iron on the thermal conductivity of (Fe, Al)-bearing bridgmanite2019

    • Author(s)
      Yoshiyuki Okuda, Kenji Ohta, Ryosuke Sinmyo, Kei Hirose, Takashi Yagi, Yasuo Ohishi
    • Journal Title

      Earth and Planetary Science Letters

      Volume: 520 Pages: 188-198

    • DOI

      10.1016/j.epsl.2019.05.042

    • Peer Reviewed
  • [Journal Article] Combination of pulsed light heating thermoreflectance and laser-heated diamond anvil cell for in-situ high pressure-temperature thermal diffusivity measurements2019

    • Author(s)
      Akira Hasegawa, Takashi Yagi, Kenji Ohta
    • Journal Title

      Review of Scientific Instruments

      Volume: 90 Pages: 74901

    • DOI

      10.1063/1.5093343

    • Peer Reviewed / Open Access
  • [Presentation] Intrinsic attenuation factor Q of partially molten Fe-S system2019

    • Author(s)
      Chao Liu, Takashi Yoshino
    • Organizer
      JpGU2019
    • Int'l Joint Research
  • [Presentation] Redox kinetics of olivine revealed by diffusion profile of oxygen fugacity and its implication to the redox evolution of the uppermost mantle2019

    • Author(s)
      Chengcheng Zhao, Takashi Yoshino
    • Organizer
      JpGU2019
    • Int'l Joint Research
  • [Presentation] Measurement of T-dependent electrical resistivity of solid and liquid Fe and Pt at fixed P2019

    • Author(s)
      Innocent Ezenwa, Takashi Yoshino
    • Organizer
      JpGU2019
    • Int'l Joint Research
  • [Presentation] Effect of iron content on thermal conductivity of olivine with implications for cooling history of rocky planets2019

    • Author(s)
      Youyue Zhang, Takashi Yoshino, Akira Yoneda, Masahiro Osako
    • Organizer
      JpGU2019
    • Int'l Joint Research
  • [Presentation] Toward organization of a new field on fast process in Earth and planetary science2019

    • Author(s)
      Takashi Yoshino
    • Organizer
      JpGU2019
    • Int'l Joint Research / Invited
  • [Presentation] Electrical resistivity and thermal conductivity of fcc Fe: Implications for the Mercury窶冱 core2019

    • Author(s)
      Hitoshi Gomi, Takashi Yoshino
    • Organizer
      JpGU2019
    • Int'l Joint Research / Invited
  • [Presentation] Seebeck coefficient of olivine: Implausible Mercury窶冱 thermoelectric dynamo2019

    • Author(s)
      Hitoshi Gomi, Takashi Yoshino, Akira Yoneda
    • Organizer
      JpGU2019
    • Int'l Joint Research / Invited
  • [Presentation] Fate of water in subducted hydrous sediments deduced from stability fields of FeOOH and AlOOH up to 20 GPa2019

    • Author(s)
      Takashi Yoshino, Edward Baker, Kyle Duffey
    • Organizer
      JpGU2019
    • Int'l Joint Research
  • [Presentation] Electrical resistivity and thermal conductivity of fcc Fe: Stratification of Mercury's core2019

    • Author(s)
      五味 斎 ・ 芳野 極
    • Organizer
      第60回高圧討論会
  • [Presentation] マルチアンビルプレスを用いた熱電性能測定技術2019

    • Author(s)
      森嘉久・中野法大・石山剛史・芳野極
    • Organizer
      第60回高圧討論会
  • [Presentation] 他元素ドープ黒リンの高圧合成と物性評価2019

    • Author(s)
      野口直樹・藤井優輝・斎藤隆宏・芳野極・劉超・岡村英一
    • Organizer
      第60回高圧討論会
  • [Presentation] ポストスピネルの剪断変形実験2019

    • Author(s)
      山崎大輔・辻野典秀・西原遊・芳野極
    • Organizer
      第60回高圧討論会
  • [Presentation] 高圧下の溶融鉄の電気抵抗測定2019

    • Author(s)
      芳野極・Innocent Ezenwa
    • Organizer
      第60回高圧討論会
  • [Presentation] Measurements of high pressure-temperature thermal conductivity of the Earth's lower mantle minerals in a laser-heated diamond anvil cell2019

    • Author(s)
      Kenji Ohta
    • Organizer
      JpGU2019
    • Int'l Joint Research
  • [Presentation] Shear deformation on post-spinel2019

    • Author(s)
      山崎大輔・辻野典秀・西原遊
    • Organizer
      JpGU2019
    • Int'l Joint Research
  • [Presentation] D111型高圧発生装置を用いたブリッジマナイトの一軸変形実験2019

    • Author(s)
      辻野典秀・ 山崎大輔・西原遊
    • Organizer
      JpGU2019
    • Int'l Joint Research
  • [Presentation] 六方最密構造(hcp)鉄のレオロジー2019

    • Author(s)
      西原遊・ 土居峻太・辻野典秀・ 山崎大輔・ 肥後祐司
    • Organizer
      JpGU2019
    • Int'l Joint Research
  • [Presentation] In-situ X-ray observations of the olivine-spinel transformation under shear deformation: preliminary results on the reaction-induced weakening2019

    • Author(s)
      久保友明・森山一哉・ 森悠一郞・ 今村公裕・小泉早苗・ 西原遊・ 鈴木昭夫・ 肥後祐司
    • Organizer
      JpGU2019
    • Int'l Joint Research
  • [Presentation] Development of the rotational diamond anvil cell for high-pressure deformation experiments and its measurement systems2019

    • Author(s)
      東真太郎・野村龍一・上杉健太朗・西原遊・土居峻太・ 有本岳史・入舩徹男
    • Organizer
      JpGU2019
    • Int'l Joint Research
  • [Presentation] Sound velocity measurements on lower mantle minerals by femtosecond pulse laser pump-probe technique2019

    • Author(s)
      Wakamatsu, T., Ohta, K., Yagi, T., Nishihsra, Y., Okuda, Y., Mitsude, Y. and Hirose, K.
    • Organizer
      Goldschmidt2019
    • Int'l Joint Research
  • [Presentation] 高温高圧処理によるNVセンター形成効率2019

    • Author(s)
      樋口泰成・小野田忍・齋藤寛之・西原遊・加田渉・大島武・花泉修
    • Organizer
      第80回応用物理学会秋季学術講演会
  • [Presentation] せん断変形場におけるオリビン-スピネル相転移:相転移誘起の軟化条件の探索2019

    • Author(s)
      久保友明・森山一哉・森悠一郎・今村公裕・小泉早苗・西原遊・鈴木昭夫・肥後祐司・丹下慶範
    • Organizer
      日本鉱物科学会2019年年会・総会
  • [Presentation] 下部マントルに沈み込んだスラブ内レオロジー2019

    • Author(s)
      東真太郎・野村龍一・上杉健太朗・西原遊・土居峻太・有本岳史・入舩徹男
    • Organizer
      日本鉱物科学会2019年年会・総会
  • [Presentation] 六方最密構造(hcp)鉄のレオロジー2019

    • Author(s)
      西原遊・土居峻太・辻野典秀・山崎大輔・肥後祐司
    • Organizer
      第60回高圧討論会
  • [Presentation] 下部マントル鉱物の縦波速度測定2019

    • Author(s)
      若松達也・太田健二・西原遊・八木貴志・奥田善之・廣瀬敬
    • Organizer
      第60回高圧討論会
  • [Presentation] 衝撃圧縮された多結晶アルミナ中の差応力時間発展2019

    • Author(s)
      丹下慶範・西原遊・瀬戸雄介・尾崎典雅・宮西宏併・佐藤友子・奥地拓生・関根利守・籔内俊毅・犬伏雄一
    • Organizer
      第60回高圧討論会
  • [Presentation] 異方的高温高圧処理によるNVセンター形成2019

    • Author(s)
      小野田忍,樋口泰成,齋藤寛之,西原遊,加田渉,花泉修,大島武
    • Organizer
      第33回ダイヤモンドシンポジウム
  • [Presentation] Deformation experiments of bridgmanite and ferropericlase; Implication for the strength of the subducted slab in the lower mantle2019

    • Author(s)
      Azuma, S., Uesugi, K., Nomura, R., Nishihara, Y., Arimoto, T
    • Organizer
      AGU Fall Meeting 2019
    • Int'l Joint Research
  • [Presentation] On the low stress power-law creep of polycrystalline olivine2019

    • Author(s)
      Takehiko Hiraga, Kosuke Yabe, Tadashi Nakakoji
    • Organizer
      AGU Fall Meeting 2019
  • [Presentation] NaNiF3を用いたポストペロフスカイト相転移機構に関する実験的研究2019

    • Author(s)
      山下紅弓、久保友明、今村公裕、肥後祐司、丹下慶範
    • Organizer
      第60回高圧討論会
  • [Presentation] 一軸圧縮変形場におけるオリビン-スピネル相転移実験 剪断不安定化条件の解明へ向けて2019

    • Author(s)
      森悠一郎、久保友明、今村公裕、山内幸子、小泉早苗、西原遊、鈴木昭夫、肥後祐司、丹下慶範
    • Organizer
      日本鉱物科学会2019年年会・総会
  • [Presentation] Time-resolved synchrotron X-ray observations of mineral transformations under static pressures: application to non-equilibrium behaviors in shocked meteorites2019

    • Author(s)
      Kubo, T., Miyahara, M.
    • Organizer
      JpGU2019
    • Int'l Joint Research / Invited

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Published: 2021-01-27  

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