Elucidation of mineralogical model of the lower mantle by in-situ high pressure and high-temperature sound velocity measurements

• Project/Area Number: 22684028
• Research Category: Grant-in-Aid for Young Scientists (A)
• Allocation Type: Single-year Grants
• Research Field: Petrology/Mineralogy/Science of ore deposit
• Research Institution: Tohoku University
• Principal Investigator: MURAKAMI Motohiko 東北大学, 大学院・理学研究科, 准教授 (50401542)
• Project Period (FY): 2010 – 2012
• Project Status: Completed (Fiscal Year 2012)
• Budget Amount: ¥26,780,000 (Direct Cost: ¥20,600,000、Indirect Cost: ¥6,180,000); Fiscal Year 2012: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000); Fiscal Year 2011: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000); Fiscal Year 2010: ¥22,750,000 (Direct Cost: ¥17,500,000、Indirect Cost: ¥5,250,000)
• Keywords: 地球深部構造 / 下部マントルの鉱物学 / 超高圧実験 / 弾性波速度測 / 地球深部科学 / 下部マントル / 弾性波速度 / 高温高圧実験

Research Abstract

Newly developed in-situ high-pressure and high-temperature sound velocity measurement system revealed the sound wave propagating velocities of various lower mantle phases including MgO, H2O, (Mg,Fe)O, Mg-perovskite, SiO_2 glass and MgSiO_3 glass which lead to put the tighter constraints on the mineralogical model of the lower mantle.

Research Products

• [Journal Article] Sound velocities of Na 0.4Mg 0.6Al1.6Si0.4O4 NAL and CF phases to 73 GPa determined by Brillouin scattering method (2013)
  • Author(s): Lidong Dai・Yuki Kudo・Kei Hirose・Motohiko Murakami・Yuki ASahara・Haruka Ozawa・Yasuo Ohishi・Naohisa Hirao
  • Journal Title: Physics and Chemistry of Minerals Volume: 40 Issue: 3 Pages: 195-201
  • DOI: 10.1007/s00269-012-0558-0
  • Peer Reviewed
• [Journal Article] Sound velocity measurements of CaSiO_3 perovskite to 133GPa and implications for lowermost mantle seismic anomalies (2012)
  • Author(s): Y Kudo, K Hirose, M Murakami, Y Asahara, H Ozawa, Y Ohishi, N Hirao
  • Journal Title: Earth and Planetary Science Letters Volume: 349 Pages: 1-7
  • URL: http://dx.doi.org/10.1016/j.epsl.2012.06.040
  • Peer Reviewed
• [Journal Article] A perovskitic lower mantle inferred from high-pressure, high-temperature sound velocity data (2012)
  • Author(s): Murakami, M., Ohishi, Y., Hirao, N., Hirose, K.
  • Journal Title: Nature Volume: 485 Issue: 7396 Pages: 90-94
  • DOI: 10.1038/nature11004
  • Peer Reviewed
• [Journal Article] Acceptance of Mineralogical Society ofAmerica Award for 2011 (2012)
  • Author(s): M. Murakami
  • Journal Title: American Mineralogist Volume: 97 Pages: 1009-1009
  • URL: http://dx.doi.org/10.2138/am.2012.587
  • Peer Reviewed
• [Journal Article] Ozawa, Y Ohishi, N Hirao Sound velocity measurements of CaSiO3 perovskite to 133GPa and implications for lowermost mantle seismic anomalies (2012)
  • Author(s): Y Kudo, K Hirose, M Murakami, Y Asahara, H Ozawa, Y Ohishi, N Hirao
  • Journal Title: Earth and Planetary Science Letters Volume: 349 Pages: 1-7
  • DOI: 10.1016/j.epsl.2012.06.040
  • Peer Reviewed
• [Journal Article] Evidence of denser MgSiO_3 glass above 133GPa and implications for remnants ofultradense silicate melt from a deep magma ocean (2011)
  • Author(s): M. Murakami & J. D. Bass
  • Journal Title: Proceedings of National Academy of Science,USA Volume: 108 Issue: 42 Pages: 17286-17286
  • DOI: 10.1073/pnas.1109748108
  • Peer Reviewed
• [Journal Article] Thermoelastic properties of ice VII and its high-pressure polymorphs: Implications for dynamics of cold slab subduction in the lower mantle (2010)
  • Author(s): Y. Asahara, K. Hirose, Y. Ohishi, N. Hirao,M. Murakami
  • Journal Title: Earth and Planetary Science Letters Volume: 299 Pages: 474-482
  • URL: http://dx.doi.org/10.1016/j.epsl.2010.09.037
  • Peer Reviewed
• [Journal Article] In-situ sound velocity measurements at high pressure and high temperature using Brillouin spectroscopy with synchrotron radiation and infrared laser heating system: Application to the deep earth science (2010)
  • Author(s): M. Murakami
  • Journal Title: Journal of the Japanese Society for Synchrotron Radiation Research Volume: 26 Pages: 370-381
  • NAID: 10027124824
  • URL: http://www.jssrr.jp/journal/pdf/23/p370.pdf
  • Peer Reviewed
• [Journal Article] Tactics and strategy toward a construction of primary pressure scale (2010)
  • Author(s): M. Murakami
  • Journal Title: The Review of High Pressure Science and Technology Volume: 20 Pages: 252-261
  • NAID: 10026625183
  • URL: http://dx.doi.org/10.4131/jshpreview.20.252
  • Peer Reviewed
• [Journal Article] Spectroscopic evidenc (2010)
  • Author(s): M. Murakami & J. D. Bass
  • Journal Title: Physical Review Letters Volume: 104 Pages: 25504-25504
  • Peer Reviewed
• [Journal Article] Sound velocity measurement in liquid water up to 25 GPa and 900 K: Implications for densities of water at lower mantle conditions (2010)
  • Author(s): Y. Asahara, M. Murakami, Y. Ohishi, N. Hirao, K. Hirose
  • Journal Title: Earth and Planetary Science Letters Volume: 289 Pages: 479-485
  • URL: http://dx.doi.org/10.1016/j.epsl.2009.11.037
  • Peer Reviewed
• [Journal Article] Spectroscopic evidence for ultrahigh pressure polymorphism in SiO2 glass (2010)
  • Author(s): M.Murakami, J.Bass
  • Journal Title: Physical Review Letters Volume: 104 Pages: 25504-25504
  • Peer Reviewed
• [Journal Article] Densification of SiO2 glass under ultrahigh pressure : Implications for the internal evolution of the Earth (2010)
  • Author(s): M.Murakami
  • Journal Title: NEW GLASS Volume: 25 Pages: 31-35
• [Journal Article] In-situ velocity measurements at high pressure and high temperature sing Brillouin spectroscopy with synchrotron radiation and infrared laser heating system : Application to the deep earth science (2010)
  • Author(s): M.Murakami
  • Journal Title: Journal of the Japanese Society for Synchrotron Radiation Research Volume: 26 Pages: 370-381
  • Peer Reviewed
• [Journal Article] Sound velocity measurement in liquid water up to 25 GPa and 900 K : Implications for densities of water at lower mantle conditions (2010)
  • Author(s): Y.Asahara, K.Hirose, Y.Ohishi, N.Hirao, M.Murakami
  • Journal Title: Earth and Planetary Science Letters Volume: 289 Pages: 479-485
  • Peer Reviewed
• [Journal Article] Thermoelastic properties of ice VII and its high-pressure polymorphs : Implications for dynamics of cold slab subduction in the lower mantle (2010)
  • Author(s): Y.Asahara, M.Murakami, Y.Ohishi, N.Hirao, K.Hirose
  • Journal Title: Earth and Planetary Science Letters Volume: 299 Pages: 474-482
  • Peer Reviewed
• [Journal Article] Elasticity of MgO to 130 GPa : Implications for lower mantle mineralogy (2010)
  • Author(s): M.Murakami
  • Journal Title: Spring-8 Research Frontiers 2009 Volume: 1 Pages: 112-113
• [Presentation] Mineralogical model of the lower mantle:constraints from elasticity (2013)
  • Author(s): M. Murakami
  • Organizer: Neutrino Geoscience 2013
  • Place of Presentation: Gifu
  • Year and Date: 2013-03-22
• [Presentation] Mineralogical model of the lower mantle: constraints from elasticity (2013)
  • Author(s): M. Murakami
  • Organizer: Neutrino Geoscience 2013
  • Place of Presentation: Gifu, Japan
  • Invited
• [Presentation] Sound velocities of Earth's deepmaterials (2012)
  • Author(s): M. Murakami
  • Organizer: IMPMC Seminar, University Pierre et Marie Curie
  • Place of Presentation: Paris (France)
  • Year and Date: 2012-11-19
• [Presentation] Chemical composition of the lower mantle: Constraints from elasticity (2012)
  • Author(s): M. Murakami
  • Organizer: Structure and Dynamics of the Earth's DeepMantle, College de France
  • Place of Presentation: Paris (France)
  • Year and Date: 2012-11-13
• [Presentation] Sound velocities of Earth's Deep (2012)
  • Author(s): MaterialsM. Murakami
  • Organizer: Dynamics and Evolution of the Earth's Interior: special emphasis on the role of fluids
  • Place of Presentation: Tottori
  • Year and Date: 2012-03-20
• [Presentation] Sound Velocities of Deep Earth's Materials (2012)
  • Author(s): 村上元彦
  • Organizer: Dynamics and Evolution of the Earth's Interior : special emphasis on the role of fluids
  • Place of Presentation: 鳥取
  • Year and Date: 2012-03-20
• [Presentation] Sound velocities of Earth’s deep materials (2012)
  • Author(s): M. Murakami
  • Organizer: MPMC Seminar
  • Place of Presentation: Paris, France
  • Invited
• [Presentation] Chemical composition of the lower mantle: Constraints from elasticity (2012)
  • Author(s): M. Murakami
  • Organizer: Structure and Dynamics of the Earth's Deep Mantle
  • Place of Presentation: Paris, France
  • Invited
• [Presentation] Perovskitititc Earth's Lower Mantle inferred from High-pressure and Temperature Sound Velocity Data (2011)
  • Author(s): 村上元彦
  • Organizer: American Geophysical Union, Fall Meeting
  • Place of Presentation: サンフランシスコ、アメリカ
  • Year and Date: 2011-12-08
• [Presentation] MSA Award Lecture: Mineralogy and Chemistry of the Earth's Lower Mantle (2011)
  • Author(s): M. Murakami
  • Organizer: 2011 Geological Society of America AnnualMeeting
  • Place of Presentation: Minneapolis (USA)
  • Year and Date: 2011-10-12
• [Presentation] MSA Award Lecture : Mineralogy and Chemistry of the Earth's Lower Mantle (2011)
  • Author(s): 村上元彦
  • Organizer: Geological Society of America Annual Meeting
  • Place of Presentation: ミネアポリス、アメリカ
  • Year and Date: 2011-10-11
• [Presentation] Perovskititic lower mantle inferred from high-pressure sound velocity data (2011)
  • Author(s): M. Murakami
  • Organizer: AOGS 2011
  • Place of Presentation: Taipei (Taiwan)
  • Year and Date: 2011-08-09
• [Presentation] Perovskititic lower mantle inferred from high-pressure sound velocity data (2011)
  • Author(s): 村上元彦
  • Organizer: AOGS 2011
  • Place of Presentation: 台北、台湾
  • Year and Date: 2011-08-09
• [Presentation] Sound velocities of Earth's Deep Materials (2010)
  • Author(s): M. Murakami
  • Organizer: Western Pacific Geophysical Meeting
  • Place of Presentation: Taipei (Taiwan)
  • Year and Date: 2010-06-23
• [Presentation] Spectroscopic evidence for ultrahigh pressure polymorphism in SiO2 glass (2010)
  • Author(s): M. Murakami
  • Organizer: Japan Geoscience Union Meeting
  • Place of Presentation: Chiba
  • Year and Date: 2010-05-26
• [Presentation] Sound velocities of Earth's deepmaterials (2010)
  • Author(s): M. Murakami
  • Organizer: Japan Geoscience Union Meeting
  • Place of Presentation: Chiba
  • Year and Date: 2010-05-25
• [Presentation] Spectroscopic evidence for ultrahigh pressure polymorphism in SiO2 glass (2010)
  • Author(s): M.Murakami
  • Organizer: Japan Geoscience Union Meeting
  • Place of Presentation: Makuhari
  • Year and Date: 2010-05-25
• [Book] ブルーバックス「放射光が解き明かす驚異の ナノ世界」(編集:日本放射光学会) (2011)
  • Author(s): (共著)村上元彦, 他
  • Publisher: 講談社
• [Book] 放射光が解き明かす驚異のナノ世界(ブルーバックス) (2011)
  • Author(s): 村上元彦, 他
  • Publisher: 講談社
• [Remarks]
  • URL: http://epms.es.tohoku.ac.jp/minphys/murakami
• [Remarks]
  • URL: http://epms.es.tohoku.ac.jp/minphys/murakami