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地球内核の組成と異方性の解明

Publicly Offered Research

Project AreaInteraction and Coevolution of the Core and Mantle: Toward Integrated Deep Earth Science
Project/Area Number 16H01112
Research Category

Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)

Allocation TypeSingle-year Grants
Review Section Science and Engineering
Research InstitutionTohoku University

Principal Investigator

坂巻 竜也  東北大学, 理学研究科, 助教 (30630769)

Project Period (FY) 2016-04-01 – 2018-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥8,450,000 (Direct Cost: ¥6,500,000、Indirect Cost: ¥1,950,000)
Fiscal Year 2017: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2016: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Keywords地球核 / 高圧 / 高温 / 音速 / 密度
Outline of Annual Research Achievements

SPring-8のBL35XU、BL43LXUにおいてX線非弾性散乱とレーザー加熱式ダイアモンドアンビル高圧発生装置を組み合わせることで地球深部を再現した超高温高圧条件下での鉄・鉄合金(地球核の模擬物質)の音速を測定した。
純鉄:200GPaを超える超高圧下で微小鉄試料からのX線非弾性散乱の取得するための最適な測定系の構築を進めた。そのシステムを用いて試料由来の非常に弱いシグナルを得られることを確認し、300GPaまでの測定に成功した。また、X線に対して透明なベリリウムガスケットを用いることでダイアモンドアンビルセルの加圧軸に対して同軸と垂直軸の2方向からのX線非弾性散乱測定を試み、試料の選択配向性と音速の関連性を明らかにした。これらは内核の異方性解明に繋がる研究成果である。
酸化鉄:下部マントル条件下で音速を測定し、同条件下では下部マントル構成鉱物より速度が遅いことを明らかにした。最下部マントルで報告されている地震学的低速度域の存在は、外核との反応などによってマントル中に酸化鉄が富化されることによってもたらされる可能性を示した。
鉄-珪素合金:鉄-珪素合金の音速を高温高圧下で測定した。鉄の音速-密度データと比較することで鉄中に珪素が含まれることと音速と密度の両方を減少させることが分かった。実際の地球の内核は純鉄より音速・密度共に小さいため、この差を埋めるためには珪素の存在が効果的であり、核中に含まれている軽元素の有力候補として珪素が挙げられることを示した。
鉄-ニッケル合金:ニッケルが鉄中に含まれることで同じ温度圧力条件下で密度が増加し、音速が減少することを明らかにした。また、観測されている地球核の音速-密度の傾きを説明するためには内核中に化学組成のグラデーションが必要であることを示した。

Research Progress Status

29年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

29年度が最終年度であるため、記入しない。

Report

(2 results)
  • 2017 Annual Research Report
  • 2016 Annual Research Report
  • Research Products

    (73 results)

All 2018 2017 2016

All Journal Article (32 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 11 results,  Open Access: 17 results) Presentation (41 results) (of which Int'l Joint Research: 29 results,  Invited: 5 results)

  • [Journal Article] Sound velocity measurements of hcp Fe-Si alloy at high pressure and high temperature by inelastic X-ray scattering2018

    • Author(s)
      Takanori Sakairi, Tatsuya Sakamaki, Eiji Ohtani, Hiroshi Fukui, Seiji Kamada, Satoshi Tsutsui, Hiroshi Uchiyama, Alfred Q.R. Baron
    • Journal Title

      American Mineralogist

      Volume: 103 Issue: 1 Pages: 85-90

    • DOI

      10.2138/am-2018-6072

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] 放射光X線で探る地球深部:地球の核組成の制約に向けて2018

    • Author(s)
      坂巻竜也
    • Journal Title

      SPring-8/SACLA利用者情報

      Volume: 23 Pages: 14-17

    • Related Report
      2017 Annual Research Report
    • Open Access
  • [Journal Article] Density of hydrous magma2017

    • Author(s)
      Sakamaki Tatsuya
    • Journal Title

      Chemical Geology

      Volume: 475 Pages: 135-139

    • DOI

      10.1016/j.chemgeo.2017.11.012

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Density of jadeite melts under high pressure and high temperature conditions2017

    • Author(s)
      SAKAMAKI Tatsuya
    • Journal Title

      Journal of Mineralogical and Petrological Sciences

      Volume: 112 Issue: 5 Pages: 300-307

    • DOI

      10.2465/jmps.170128

    • NAID

      130006201316

    • ISSN
      1345-6296, 1349-3825
    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 高圧下でのマグマ物性:地球深部でのマグマの挙動解明2017

    • Author(s)
      坂巻竜也
    • Journal Title

      岩石鉱物科学,

      Volume: 46 Pages: 30-34

    • NAID

      130005475603

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Compressional sound velocity of hexagonal close-packed iron up to 163 GPa and 3000 K2017

    • Author(s)
      Sakamaki Tatsuya, Ohtani Eiji, Fukui Hiroshi, Baron Alfred Q.R.
    • Journal Title

      Reseaech Frontiers 2016

      Volume: - Pages: 92-93

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] 地球で一番深い場所-高圧実験から探る地球の中心核の化学組成-2017

    • Author(s)
      坂巻竜也
    • Journal Title

      まなびの杜

      Volume: 81 Pages: 3-4

    • Related Report
      2017 Annual Research Report
    • Open Access
  • [Journal Article] X線非弾性散乱を利用した高温高圧条件下での鉄合金の音速測定と地球内核組成の制約への適用2017

    • Author(s)
      坂巻竜也、大谷栄治、福井宏之、鎌田誠司、田中遼介、生田大穣、アルフレッドバロン、五島賢一
    • Journal Title

      SPring-8 Experimental Summary Report

      Volume: -

    • Related Report
      2017 Annual Research Report
    • Open Access
  • [Journal Article] 20GPaまでの鉄-珪素合金の弾性波速度測定2017

    • Author(s)
      坂巻竜也、寺﨑英紀、柴﨑裕樹、鈴木昭夫、戸邉宙、肥後祐司、西田圭佑、大橋智典
    • Journal Title

      SPring-8 Experimental Summary Report

      Volume: -

    • Related Report
      2017 Annual Research Report
    • Open Access
  • [Journal Article] 15 GPaまでのFe-Ni融体の音速と密度に与える硫黄の効果2017

    • Author(s)
      寺﨑英紀、坂巻竜也、柴﨑裕樹、西田圭佑、肥後祐司、下山裕太、神谷朝香、山田伊織、丹下義範
    • Journal Title

      SPring-8 Experimental Summary Report

      Volume: -

    • Related Report
      2017 Annual Research Report
    • Open Access
  • [Journal Article] 20GPaまでの鉄メルトの音速測定2017

    • Author(s)
      西田圭佑、寺﨑英紀、肥後祐司、柴﨑裕樹、坂巻竜也、下山裕太
    • Journal Title

      SPring-8 Experimental Summary Report

      Volume: -

    • Related Report
      2017 Annual Research Report
    • Open Access
  • [Journal Article] 高温高圧下における鉄・軽元素系化合物の相転移にともなう音速変化2017

    • Author(s)
      大谷栄治、坂巻竜也、福井宏之、鎌田誠司、田中遼祐、寺﨑英紀、生田大穣、アルフレッドバロン
    • Journal Title

      SPring-8 Experimental Summary Report

      Volume: -

    • Related Report
      2017 Annual Research Report
    • Open Access
  • [Journal Article] 高温高圧下での超音波法によるfcc-Feの弾性波速度測定2017

    • Author(s)
      柴﨑裕樹、寺﨑英紀、坂巻竜也、久野直毅、大橋智典
    • Journal Title

      SPring-8 Experimental Summary Report

      Volume: -

    • Related Report
      2017 Annual Research Report
    • Open Access
  • [Journal Article] 高温高圧下での地球核物質の音速-密度同時決定2017

    • Author(s)
      坂巻竜也、大谷栄治、福井宏之、田中遼介、生田大穣、アルフレッドバロン、袁亮
    • Journal Title

      SPring-8 Experimental Summary Report

      Volume: -

    • Related Report
      2017 Annual Research Report
    • Open Access
  • [Journal Article] 部分溶融メルトの弾性波速度測定と地震波低速度異常域への適用2017

    • Author(s)
      坂巻竜也、柴﨑裕樹、鈴木昭夫、大橋智典、肥後祐司、久野直毅
    • Journal Title

      SPring-8 Experimental Summary Report

      Volume: -

    • Related Report
      2017 Annual Research Report
    • Open Access
  • [Journal Article] 流紋岩マグマの破砕その場観察:4Dトモグラフィーと構造解析2017

    • Author(s)
      奥村聡、上杉健太朗、坂巻竜也
    • Journal Title

      SPring-8 Experimental Summary Report

      Volume: -

    • Related Report
      2017 Annual Research Report
    • Open Access
  • [Journal Article] 20GPaまでのFe-Sメルトの音速に及ぼす硫黄の効果の解明2017

    • Author(s)
      西田圭佑、寺﨑英紀、肥後祐司、柴﨑裕樹、山田伊織、坂巻竜也
    • Journal Title

      SPring-8 Experimental Summary Report

      Volume: -

    • Related Report
      2017 Annual Research Report
    • Open Access
  • [Journal Article] 高温高圧下における鉄-軽元素合金の音速測定と内核の不均質性2017

    • Author(s)
      大谷栄治、坂巻竜也、生田大穣、福井宏之、鎌田誠司、田中遼祐、寺﨑英紀、生田大穣、袁亮、アルフレッドバロン、イゴールコーメッツ
    • Journal Title

      SPring-8 Experimental Summary Report

      Volume: -

    • Related Report
      2017 Annual Research Report
    • Open Access
  • [Journal Article] Diamond formation in the deep lower mantle: a high-pressure reaction of MgCO3 and SiO22017

    • Author(s)
      Fumiya Maeda, Eiji Ohtani, Seiji Kamada, Tatsuya Sakamaki, Naohisa Hirao, Yasuo Ohishi
    • Journal Title

      Scientific Reports

      Volume: 7 Issue: 1 Pages: 40602-40602

    • DOI

      10.1038/srep40602

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Melting relations in the Fe-S-Si system at high pressure and temperature: Implications for the planetary core2017

    • Author(s)
      Sakairi, T., Ohtani, E., Kamada, S., Sakai, T., Sakamaki, T., Hirao, N.
    • Journal Title

      Progress in Earth and Planetary Science

      Volume: 4:10 Issue: 1 Pages: 1-11

    • DOI

      10.1186/s40645-017-0125-x

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] 高圧下でのマグマ物性:地球深部でのマグマの挙動解明2017

    • Author(s)
      坂巻竜也
    • Journal Title

      岩石鉱物科学

      Volume: 46巻 Pages: 30-34

    • NAID

      130005475603

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Preface for the article collection “High-Pressure Earth and Planetary Science in the last and next decade”2016

    • Author(s)
      T. Sakamaki, A. Suzuki, and B. Mysen
    • Journal Title

      Progress in Earth and Planetary Science

      Volume: 3 Issue: 1 Pages: 38-38

    • DOI

      10.1186/s40645-016-0114-5

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Magnetic and spin transitions in wüstite: A synchrotron Mössbauer spectroscopic study2016

    • Author(s)
      M. Hamada, S. Kamada, E. Ohtani, T. Mitsui, R. Masuda, T. Sakamaki, N. Suzuki, F. Maeda and M. Akasaka
    • Journal Title

      Physical Review B

      Volume: 93 Issue: 15 Pages: 155165-155165

    • DOI

      10.1103/physrevb.93.155165

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Compressional and shear wave velocities for polycrystalline bcc-Fe up to 6.3 GPa and 800 K2016

    • Author(s)
      Y. Shibazaki, K. Nishida, Y. Higo, M Igarashi, M. Tahara, T. Sakamaki, H. Terasaki, Y. Shimoyama, S. Kuwabara, Y. Takubo, E. Ohtani
    • Journal Title

      American mineralogist

      Volume: 101 Issue: 5 Pages: 1150-1160

    • DOI

      10.2138/am-2016-5545

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Determination of sound velocity of iron-alloy using inelastic X-ray scattering experiment under ultra-high pressure and temperature conditions2016

    • Author(s)
      Sakamaki, T., Fukui, H., Tanaka, R., Ohtani, E., Baron, A.Q.R.
    • Journal Title

      SPring-8 Experimental Summary Report

      Volume: 2016A1180 Pages: 1-1

    • Related Report
      2016 Annual Research Report
  • [Journal Article] Sound velocity of Fe3S, FeO, and FeH at high pressure and temperatures, and implications for sound velocity anomalies at the inner core boundary2016

    • Author(s)
      Ohtani, E., Sakamaki, T.,, Fukui, H., Kamada, S., Tanaka, R.
    • Journal Title

      SPring-8 Experimental Summary Report

      Volume: 2016A1171 Pages: 1-1

    • Related Report
      2016 Annual Research Report
  • [Journal Article] Study of physical properties of the core and lower mantle materials using synchrotron Mössbauer and X-ray diffraction method2016

    • Author(s)
      Ohtani, E., Kamada, S., Sakamaki, T.,, Fumiya, M., Sakairi, T., Ohira, I., Kuga, S.
    • Journal Title

      SPring-8 Experimental Summary Report

      Volume: 2016A0104 Pages: 1-1

    • Related Report
      2016 Annual Research Report
  • [Journal Article] Simultaneous sound velocity and density measurements of iron-silicon alloys under core conditions of Mercury and Mars2016

    • Author(s)
      Sakamaki, T., Terasaki, H., Shibazaki, Y., Suzuki, A., Tobe, H., Higo, Y., Kurokawa, F., Maki, M., Shimoyama, Y., Saito, R.
    • Journal Title

      SPring-8 Experimental Summary Report

      Volume: 2016B1111 Pages: 1-1

    • Related Report
      2016 Annual Research Report
  • [Journal Article] Simultaneous sound velocity and density measurements of iron-alloys for understanding the composition of Earth’s inner core2016

    • Author(s)
      Sakamaki, T., Fukui, H., Tanaka, R., Kamada, S., Ikuta, D., Ohtani, E., Baron, A.Q.R.
    • Journal Title

      SPring-8 Experimental Summary Report

      Volume: 2016B1112 Pages: 1-1

    • Related Report
      2016 Annual Research Report
  • [Journal Article] Four-dimensional tomography and in-situ X ray diffraction of flowing magmas2016

    • Author(s)
      Okumura, S., Sakamaki, T., Uesugi, K.
    • Journal Title

      SPring-8 Experimental Summary Report

      Volume: 2016B1253 Pages: 1-1

    • Related Report
      2016 Annual Research Report
  • [Journal Article] Sound velocity of iron-light element compounds at high pressure and temperature, and detection of the sound velocity anomalies near the transition boundary2016

    • Author(s)
      Ohtani, E., Sakamaki, T.,, Fukui, H., Kamada, S., Tanaka, R., Terasaki, H., Baron, A.Q.R.
    • Journal Title

      SPring-8 Experimental Summary Report

      Volume: 2016B1419 Pages: 1-1

    • Related Report
      2016 Annual Research Report
  • [Journal Article] Sound velocity and density measurements of liquid Fe-Ni-Si up to 15 GPa2016

    • Author(s)
      Terasaki, H., Maki, M., Shimoyama, Y., Kurokawa, F., Saito, R., Sakamaki, T., Shibazaki, Y., Tobe, H., Higo, Y., Tange, Y.
    • Journal Title

      SPring-8 Experimental Summary Report

      Volume: 2016B1518 Pages: 1-1

    • Related Report
      2016 Annual Research Report
  • [Presentation] マルチメガバールでの鉄の音速測定2017

    • Author(s)
      坂巻竜也,福井宏之,大谷栄治,田中遼介,アルフレッド・バロン
    • Organizer
      新学術領域研究「核‐マントル共進化」平成28年度成果発表会
    • Place of Presentation
      横浜
    • Year and Date
      2017-03-26
    • Related Report
      2016 Annual Research Report
  • [Presentation] Sound velocity of hcp-Fe at multi-megabar pressures2017

    • Author(s)
      Sakamaki, T., Fukui, H., Ohtani, E., Tanaka, R., Baron, A.Q.R.
    • Organizer
      JpGU-AGU Joint Meeting 2017
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] The sound velocity measurements of FeO at high pressure and temperature: Implications for the low velocity anomaly around the core-mantle boundary2017

    • Author(s)
      Tanaka, R., Sakamaki, T., Fukui, H., Ohtani, E., Kamada, S., Sato, S., Tsutsui, S., Uchiyama, H., Baron, A.Q.R., Suzuki, A.
    • Organizer
      JpGU-AGU Joint Meeting 2017
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Phase relations in the Fe-FeSi system at 10 GPa : Implications for Mercury’s core2017

    • Author(s)
      Tobe, H., Shibazaki, Y., Sakamaki, T., Hiroi, Y., Abe, R., Suzuki, A.
    • Organizer
      JpGU-AGU Joint Meeting 2017
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Experimental investigation into the cause of a high attenuation zone of the lunar seismic waves: A possible partialy molten layer at the lowest lunar mantle2017

    • Author(s)
      Igarashi, M., Shibazaki, Y., Shiraishi, R., Sakamaki, T., Suzuki, A.
    • Organizer
      JpGU-AGU Joint Meeting 2017
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Composition of the core: Geochemical and mineral physics constraints2017

    • Author(s)
      Ohtani, E., Sakairi, T., Sakamaki, T., Kamada, S., Tanaka, R., Fukui, H., Baron, A.Q.R.
    • Organizer
      JpGU-AGU Joint Meeting 2017
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] The heterogeneities in Lunar interior: Role of High Titanium materials2017

    • Author(s)
      Ohtani, E., Igarashi, M., Sakamaki, T., Zhao, D.
    • Organizer
      JpGU-AGU Joint Meeting 2017
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Phase relation in MgCO3-SiO2 system up to the lowermost mantle2017

    • Author(s)
      Maeda, F., Ohtani, E., Kamada, S., Sakamaki, T., Hirao, N., Ohishi, Y.
    • Organizer
      JpGU-AGU Joint Meeting 2017
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] High-pressure phase transitions of MgCO3 under the lower mantle conditions2017

    • Author(s)
      Maeda, F., Kamada, S., Sakamaki, T., Hirao, N., Ohishi, Y., Suzuki, A.
    • Organizer
      JpGU-AGU Joint Meeting 2017
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Interior structure of Mars estimated from elastic properties of liquid Fe-Ni-S2017

    • Author(s)
      Terasaki, H., Shimoyama, Y., Maki, M., Kurokawa, F., Urakawa, S., Nishida, K., Saito, R., Takubo, Y., Shibazaki, Y., Sakamaki, T., Machida, A., Higo, Y., Kondo, T.
    • Organizer
      JpGU-AGU Joint Meeting 2017
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Basaltic glass structure by time-of-flight neutron diffraction2017

    • Author(s)
      Sakamaki, T., Hattori, T., Sano-Furukawa, A.
    • Organizer
      Goldschmidt 2017
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Geochemical and mineral physics constraints on the composition of the inner core2017

    • Author(s)
      Ohtani, E., Sakamaki, T., Sakairi, T., Tanaka, R., Kamada, S., Fukui, H., Barao, A.Q.R.
    • Organizer
      Goldschmidt 2017
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Densification of calcium-aluminum-silicate glass at the pressure of ~5.5 GPa2017

    • Author(s)
      Nakajima, A., Sakamaki, T., Hisano, N., Horioka, Y., Suzuki, A.
    • Organizer
      55th EHPRG Meeting
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Phase relations of MgCO3 high-pressure carbonate under the lower mantle conditions2017

    • Author(s)
      Maeda, F., Kamada, S., Sakamaki, T., Miyajima, N., Hirao, N., Ohishi, Y., Suzuki, A.
    • Organizer
      55th EHPRG Meeting
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Structure measurement of basaltic glass using neutron diffraction2017

    • Author(s)
      Sakamaki, T.
    • Organizer
      High-Pressure Mineral Physics Seminar
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Sound velocity of iron-light element compounds and composition of the inner core2017

    • Author(s)
      Ohtani, E., Sakamaki, T., Kamada, S., Ikuta, D., Tanaka, R., Fukui, H., Baron, A.Q.R.
    • Organizer
      High-Pressure Mineral Physics Seminar
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Compressibility of MgCO3 phase II under the lowermost mantle conditions2017

    • Author(s)
      Maeda, F., Kamada, S., Sakamaki, T., Hirao, N., Ohishi, Y., Suzuki, A.
    • Organizer
      High-Pressure Mineral Physics Seminar
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Sound velocity and elastic properties of liquid Fe-Ni-Si at high pressure2017

    • Author(s)
      Terasaki, H., Maki, M., Shimoyama, Y., Nishida, K., Urakawa, S., Takubo, Y., Shibazaki, Y., Sakamaki, T., Higo, Y., Machida, A., Kondo, T.
    • Organizer
      High-Pressure Mineral Physics Seminar
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Structure measurements of basaltic glass at high pressure using X-ray and neutron diffraction techniques2017

    • Author(s)
      Ohashi, T., Sakamaki, T., Hattori, T., Sano-Furukawa, A., Funakoshi, K., Suzuki, A.
    • Organizer
      The 5th Workshop for Extreme Materials Science “Silicate Melt/Glass”
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Structures of basaltic glass under high pressure by in-situ X-ray and neutron diffraction investigations2017

    • Author(s)
      Ohashi, T., Sakamaki, T., Hattori, T., Sano-Furukawa, A., Funakoshi, K., Suzuki, A.
    • Organizer
      Interaction and Coevolution of the Core and Mantle Toward Integrated Deep Earth Science Internarional Symposium Annual General Meeting
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Melting experiments of hydrous peridotite under the top of the lower mantle conditions2017

    • Author(s)
      Nakajima, A., Sakamaki, T., Kawazoe, T., Suzuki, A.
    • Organizer
      Interaction and Coevolution of the Core and Mantle Toward Integrated Deep Earth Science Internarional Symposium Annual General Meeting
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 放射光X線で探る地球深部:地球の核組成の制約に向けて2017

    • Author(s)
      坂巻竜也
    • Organizer
      SPring-8シンポジウム2017
    • Related Report
      2017 Annual Research Report
    • Invited
  • [Presentation] 高温高圧下での鉄-珪素合金の弾性波速度測定2017

    • Author(s)
      坂巻竜也、寺﨑英紀、柴﨑裕樹、戸邉宙、下山裕太、肥後祐司、鈴木昭夫
    • Organizer
      日本鉱物科学会2017年年会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 音速測定と固液分配実験から測定する内核の組成2017

    • Author(s)
      大谷栄治、坂巻竜也、生田大穣、田中遼介、福井宏之、バロンアルフレッド
    • Organizer
      日本鉱物科学会2017年年会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 圧力起因の玄武岩質ガラスの構造変化2017

    • Author(s)
      大橋智典、坂巻竜也、服部高典、佐野亜沙美、小澤信、舟越賢一、鈴木昭夫
    • Organizer
      日本鉱物科学会2017年年会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 高温高圧実験によるアノーサイトメルトの粘度と月玄武岩の弾性波速度の測定2017

    • Author(s)
      坂巻竜也
    • Organizer
      第13回月地殻研究会
    • Related Report
      2017 Annual Research Report
    • Invited
  • [Presentation] パイロープガラスの圧力起因の構造変化2017

    • Author(s)
      久野直毅、坂巻竜也、堀岡祥生、大橋智典、鈴木昭夫
    • Organizer
      第58回高圧討論会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 川井型プレスを用いたX線イメージング吸収法による固体鉄の密度測定2017

    • Author(s)
      寺﨑英紀、下山裕太、西田圭佑、坂巻竜也、柴﨑裕樹、肥後祐司
    • Organizer
      第58回高圧討論会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Sound velocity of iron-light element compounds and the chemical structure of the inner core2016

    • Author(s)
      Ohtani, E., Sakamaki, T., Fukui, H., Tanaka, R., Shibazaki, Y., Kamada, S., Sakairi, T., Takahashi, S., Tsutsui, S., Baron, A.Q.R.
    • Organizer
      AGU Fall Meeting 2016
    • Place of Presentation
      San Francisco USA
    • Year and Date
      2016-12-12
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Sound velocity and density of FeO at high pressure and temperature2016

    • Author(s)
      Tanaka, R., Sakamaki, T., Fukui, H., Ohtani, E., Kamada, S., Sato, S., Tsutsui, S., Uchiyama, H., Baron, A.Q.R., Suzuki, A.
    • Organizer
      AGU Fall Meeting 2016
    • Place of Presentation
      San Francisco USA
    • Year and Date
      2016-12-12
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 高圧下におけるFeOの音速測定2016

    • Author(s)
      田中遼介,坂巻竜也,福井宏之,大谷栄治,鎌田誠司,筒井智嗣,内山裕士,アルフレッド・バロン, 鈴木昭夫
    • Organizer
      第57回高圧討論会
    • Place of Presentation
      つくば
    • Year and Date
      2016-10-26
    • Related Report
      2016 Annual Research Report
  • [Presentation] 地球惑星深部環境におけるマグマの物性と構造に関する研究2016

    • Author(s)
      坂巻竜也
    • Organizer
      日本鉱物科学会2016年年会
    • Place of Presentation
      金沢
    • Year and Date
      2016-09-23
    • Related Report
      2016 Annual Research Report
    • Invited
  • [Presentation] 高温高圧下での鉄-ニッケル合金の音速・密度測定2016

    • Author(s)
      坂巻竜也、福井宏之、大谷栄治、鎌田誠司、筒井智嗣、アルフレッド・バロン
    • Organizer
      日本鉱物科学会2016年年会
    • Place of Presentation
      金沢
    • Year and Date
      2016-09-23
    • Related Report
      2016 Annual Research Report
  • [Presentation] Pressure-induced change of iron in complicated silicate glasses2016

    • Author(s)
      Maeda, F., Kamada, S., Ohtani, E., Sakamaki, T., Hirao, N., Mitsui, T., Masuda, R., Nakano, S.
    • Organizer
      The 54th European High Pressure Research Group (EHPRG) International Meeting on High Pressure Science and Technology
    • Place of Presentation
      Bayreuth GERMANY
    • Year and Date
      2016-09-04
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] X線非弾性散乱を用いた地球核条件下での鉄・鉄合金の音速測定2016

    • Author(s)
      坂巻竜也
    • Organizer
      地球惑星科学研究会・高圧物質科学研究会合同研究会
    • Place of Presentation
      大阪
    • Year and Date
      2016-08-28
    • Related Report
      2016 Annual Research Report
    • Invited
  • [Presentation] Synchrotron 57Fe Mössbauer study of basaltic glass up to the lowermost mantle pressure2016

    • Author(s)
      Maeda, F., Kamada, S., Ohtani, E., Sakamaki, T., Hirao, N., Mitsui, T., Masuda, R.
    • Organizer
      Intenational Workshop: New Challenges in Volatile Cycling in the Deep Earth
    • Place of Presentation
      Sendai JAPAN
    • Year and Date
      2016-07-04
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] The compressibility of partial molar volume of H2O in magma2016

    • Author(s)
      T. Sakamaki
    • Organizer
      Goldschmidt 2016
    • Place of Presentation
      Yokohama JAPAN
    • Year and Date
      2016-06-26
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Reaction of MgCO3 high-pressure phase and SiO2; Origin of super-deep diamond2016

    • Author(s)
      F. Maeda, S. Kamada, E. Ohtani, T. Sakamaki, N. Hirao, Y. Ohishi
    • Organizer
      Goldschmidt 2016
    • Place of Presentation
      Yokohama JAPAN
    • Year and Date
      2016-06-26
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Melting relation in the Fe-S-Si system at 10 GPa: Implications for Mercury’s core2016

    • Author(s)
      H. Tobe, A. Suzuki, Y. Shibazaki, T. Sakamaki, E. Ohtani
    • Organizer
      Goldschmidt 2016
    • Place of Presentation
      Yokohama JAPAN
    • Year and Date
      2016-06-26
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Sound velocity of Fe3C and carbon in the core2016

    • Author(s)
      Takahashi, S., Ohtani, E., Sakamaki, T., Kamada, S., Fukui, H., Baron, A.Q.R.
    • Organizer
      Goldshmidt2016
    • Place of Presentation
      Yokohama JAPAN
    • Year and Date
      2016-06-26
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Sound velocity Fe3S at high pressure and high temperature based on inelastic X-ray scattering2016

    • Author(s)
      Kamada, S., Sakairi, T., Sakamaki, T., Ohtani, E., Terasaki, H., Fukui, H., Baron, A.Q.R., Suzuki, A., Uchiyama, H., Tsutsui, S.
    • Organizer
      Japan Geoscience Union Meeting 2016
    • Place of Presentation
      Chiba JAPAN
    • Year and Date
      2016-05-22
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research

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Published: 2016-04-26   Modified: 2018-12-17  

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