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Generation of high pressure at the center of the Earth: Implications for the Earth's inner core materials

Research Project

Project/Area Number 19740332
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeSingle-year Grants
Research Field Petrology/Mineralogy/Science of ore deposit
Research InstitutionJapan Synchrotron Radiation Research Institute

Principal Investigator

HIRAO Naohisa  Japan Synchrotron Radiation Research Institute, 利用研究促進部門極限構造チーム, 研究員 (70374915)

Project Period (FY) 2007 – 2008
Project Status Completed (Fiscal Year 2008)
Budget Amount *help
¥3,590,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥390,000)
Fiscal Year 2008: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2007: ¥1,900,000 (Direct Cost: ¥1,900,000)
Keywords地球 / 惑星内部構造 / 地球内核 / 固体地球物理 / 放射光 / 超高圧力 / 金属物性 / 地球・惑星内部構造
Research Abstract

地球中心圧力365万気圧の超高圧力条件を実験的に再現し, この条件下で地球核構成物質である鉄系合金の結晶構造や物性を明らかにすることにより, 地球の内核を物質科学的に解明することを目的とした. 超高圧発生装置ダイヤモンドアンビルセルを用いた技術により, 地球内部で最も深部にある内核の圧力条件330-365万気圧を達成できる圧力発生技術が開発され, 地球中心核の構成物質である鉄, ニッケルおよび鉄系合金に関する密度・物性の測定が地球中心圧力まで可能となった.

Report

(3 results)
  • 2008 Annual Research Report   Final Research Report ( PDF )
  • 2007 Annual Research Report
  • Research Products

    (22 results)

All 2009 2008 2007

All Journal Article (14 results) (of which Peer Reviewed: 14 results) Presentation (8 results)

  • [Journal Article] Elasticity of MgO to 130 Gpa : Implications for lower mantle mineralogy2009

    • Author(s)
      M. Murakami, Y. Ohishi, N. Hirao, K. Hirose
    • Journal Title

      Earth and Planetary Science Letters 277

      Pages: 123-129

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Elasticity of MgO to 130 GPa: Implications for lower mantle mineralogy2009

    • Author(s)
      M. Murakami, Y. Ohishi, N. Hirao, K. Hirose
    • Journal Title

      Earth and Planetary Science Letters 277

      Pages: 123-129

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] High-intensity monochromatic x-ray diffraction facility for high-pressure research at Spring-82008

    • Author(s)
      Y. Ohishi, N. Hirao, N. Sata, K. Hirose, M. Takata
    • Journal Title

      High Pressure Research 28

      Pages: 163-173

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Phase relations of Fe-Si alloy up to core conditions : Implications for the Earth inner core2008

    • Author(s)
      H. Asanuma, E. Ohtani, T. Sakai, H. Terasaki, S. Kamada, N. Hirao, N. Sata, Y. Ohishi
    • Journal Title

      Geophysical Research Letters 35

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] HollanditeII phase in KAlSi3O8 as a potential host mineral of potassium in the Earth's lower mantle2008

    • Author(s)
      N. Hirao, E. Ohtani, T. Kondo, T. Sakai, T. Kikegawa
    • Journal Title

      Physics of the Earth and Planetary Interiors 166

      Pages: 97-104

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] マルチメガバール実験が切り開く地球惑星科学の新展開2008

    • Author(s)
      平尾直久
    • Journal Title

      高圧力の科学と技術 18

      Pages: 11-20

    • NAID

      10021153125

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] New high-pressure B2 phase of FeS above 180 Gpa2008

    • Author(s)
      N. Sata, H. Ohfuji, K. Hirose, H. Kobayashi, Y. Ohishi, N. Hirao
    • Journal Title

      American Mineralogist 93

      Pages: 492-494

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Aluminous hydrous mineral O-AlOOH as a carrier of hydrogen into the core-mantle boundary2008

    • Author(s)
      A. Sano, E. Ohtani, T. Kondo, N. Hirao, T. Sakai, N. Sata, Y. Ohishi, T. Kikagawa
    • Journal Title

      Geophysical Research Letters 35

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] High-intensity monochromatic x-ray diffraction facility for high-pressure research at SPrine-82008

    • Author(s)
      Y. Ohishi, N. Hirao, N. Sata, K. Hirose, M. Takata
    • Journal Title

      High Pressure Research 28

      Pages: 163-173

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Phase relations of Fe-Si alloy up to core conditions: Implications for the Earth inner core2008

    • Author(s)
      H. Asanuma, E. Ohtani, T. Sakai, H. Terasaki, S. Kamada, N. Hirao, N. Sata, Y. Ohishi
    • Journal Title

      Geophysical Research Letters 35

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Hollanditell phase in KAISI_3O_8 as a potential host mineral of potssium in Earth's lower mantle2008

    • Author(s)
      N. Hirao, E. Ohtani, T. Kondo, T. Sakai, T. Kikegawa
    • Journal Title

      Physics of the Earth and Planetary Interiors 166

      Pages: 97-104

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] マルチメガバール実験が切り開く地球惑星科学の新展開2008

    • Author(s)
      平尾 直久
    • Journal Title

      高圧力の科学と技術 18

      Pages: 11-20

    • NAID

      10021153125

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] New high-pressure B2 phase of FeS above 180 GPa2008

    • Author(s)
      N.Sata, H.ohfuji, K.Hirose, H.Kobayashi, Y.Ohishi, N.Hirao
    • Journal Title

      American Mineralogist 93

      Pages: 492-494

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Aluminous hydrous mineral δ-AIOOH as a carrier of hydrogen into the core-mantle boundary2008

    • Author(s)
      A.Sano, E.Ohtani, T.Kondo, N.Hirao, T.Sakai, N.Sata, Y.Ohishi, T.Kikagawa
    • Journal Title

      Geophysical Research Letters 35

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Presentation] 放射光メスバウワー測定によるFeHの圧力誘起強磁性常磁性転移2008

    • Author(s)
      平尾直久, 大石泰生, 三井隆也,瀬戸誠, 竹村謙一, 亀卦川卓美
    • Organizer
      第7回水素量子アトミクス研究会
    • Place of Presentation
      新潟大学
    • Year and Date
      2008-11-22
    • Related Report
      2008 Final Research Report
  • [Presentation] 放射光メスバウワー測定によるFeHの圧力誘起強磁性・常磁性転移2008

    • Author(s)
      平尾直久,大石泰生,三井隆也,瀬戸誠,竹村謙一,亀卦川卓美
    • Organizer
      第7回水素量子アトミクス研究会
    • Place of Presentation
      新潟県新潟大学五十嵐キャンパス
    • Year and Date
      2008-11-22
    • Related Report
      2008 Annual Research Report
  • [Presentation] マルチメガバール領域における放射光メスバウア分光法2008

    • Author(s)
      平尾直久, 三井隆也, 瀬戸誠, 大石泰生
    • Organizer
      第49回高圧討論会
    • Place of Presentation
      姫路
    • Year and Date
      2008-11-12
    • Related Report
      2008 Final Research Report
  • [Presentation] マルチメガバール領域における放射光メスバウア分光法2008

    • Author(s)
      平尾直久,三井隆也,瀬戸誠,大石泰生
    • Organizer
      第49回高圧討論会
    • Place of Presentation
      兵庫県姫路市姫路商工会議所
    • Year and Date
      2008-11-12
    • Related Report
      2008 Annual Research Report
  • [Presentation] Compression behavior of iron at multimegabar pressure2007

    • Author(s)
      N. Hirao, Y. Ohishi, K. Yasuda, Y. Akahama, H. Kawamura
    • Organizer
      High Pressure Mineral Physics Seminar
    • Place of Presentation
      宮城県・松島
    • Year and Date
      2007-05-11
    • Related Report
      2008 Final Research Report
  • [Presentation] Compression behavior of iron at multimegabar pressure2007

    • Author(s)
      N.Hirao, Y.Ohishi, K.Yasuda, Y. Akahama, H. Kawamura
    • Organizer
      High Pressure Mineral Physics Seminar (HPMPS-7)
    • Place of Presentation
      宮城県松島
    • Year and Date
      2007-05-11
    • Related Report
      2007 Annual Research Report
  • [Presentation] High-pressure study of iron-bearing materials by energy-domain synchrotron radiation Mossbauer spectroscopy2007

    • Author(s)
      N. Hirao, T. Mitsui, Y. Ohishi, M. Seto
    • Organizer
      IUCr High Pressure Commission
    • Place of Presentation
      Oxford, UK
    • Related Report
      2008 Final Research Report
  • [Presentation] High-pressure study of iron-bearing marerials by energy-domain synchrotron radiation Mossbauer spectroscopy2007

    • Author(s)
      N.Hirao, T.Mitsui, Y.Ohishi, M.Seto
    • Organizer
      IUCr High Pressure Commission
    • Place of Presentation
      イギリス,オックスフォード
    • Related Report
      2007 Annual Research Report

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Published: 2007-04-01   Modified: 2016-04-21  

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