スラブ滞留・崩落過程の物質科学的モデリング

2008 Fiscal Year Annual Research Report

• Project/Area Number: 16075202
• Research Institution: Tohoku University
• Principal Investigator: 大谷 栄治 Tohoku University, 大学院・理学研究科, 教授 (60136306)
• Co-Investigator(Kenkyū-buntansha): 鈴木 昭夫 東北大学, 大学院・理学研究科, 准教授 (20281975) ; 寺崎 英紀 東北大学, 大学院・理学研究科, 助教 (50374898) ; 長瀬 敏郎 東北大学, 学術資源研究公開センター, 准教授 (10237521) ; 廣瀬 敬 東京工業大学, 大学院・理工学研究科, 教授 (50270921) ; 村上 元彦 東北大学, 大学院・理学研究科, 准教授 (50401542)
• Keywords: 岩鉱・鉱物・鉱床 / 固体地球物理学 / 地殻・マントル物質 / 地球・惑星内部構造 / 水循環

Research Abstract

本研究は、滞留するスラブ内の諸過程とスラブと下部マントルとの化学的相互作用を解明することにより、スタグナントスラブの多様性、滞留したスラブのマントル深部への崩落の原因、崩落するスラブのダイナミクスを解明することを目的としている。
本年度においては、(1) マントル遷移層におけるMg2SiO4のポストスピネル転移に対する水の影響を解明し、(2) マントル遷移層に沈み込んだスラブ中のアキモトアイト(MgSiO3)の選択配向を明らかにしトンガスラブの地震波異方性を解釈した、(3) スラブの沈み込みに伴う下部マントルへの水の移動と核との相互作用を解明した。すなわち下部マントルで安定な含水δ相と金属鉄の反応、特に1)δ-AlOOH phaseの安定領域、高圧安定含水鉱物δ-AlOOHが180GPaを超える圧力まで安定であることを明らかにし、この相が核に水を運ぶことを明らかにした。2) δ-A100H phaseと金属鉄の反応、含水Ringwooditeと金属鉄の反応実験を行い、高温高圧で鉄水素化物が生じ、含水鉱物から水が除かれることを明らかにした。(4) 核・マントル境界におけるマントル・核の相互作用とプルームのOs同位体異常の起源に関する地球化学的モデルを検証した。(5) 1330から4400Kまでのかなり広い温度範囲で実験を行うことにより、ポストペロブスカイト相転移境界を以前より精度よく決定することに成功した。(6) ポストペロフスカイト相の電気伝導度を測定することに成功した。(7) 前年度に引き続き、高温高圧下の条件において、ブリリュアン散乱法を用いてMgOおよびペロブスカイトおよびポストペロブスカイトの弾性的性質を解明した。(8) リングウッダイト中におけるシリコン、酸素、水素の元素の拡散係数を測定し、マントル遷移層の変形流動特性を解明した。

Research Products

• [Journal Article] Elasticity of MgO to 130 GPa : Implications for lower mantle mineralogy (2009)
  • Author(s): Murakami, M., Y. Ohishi, N. Hirao and K. Hirose
  • Journal Title: Earth and Planetary Science Letters 277 Pages: 123-129
  • Peer Reviewed
• [Journal Article] Elasticity of MgO to 130 GPa : Implications for lower mantle mineralogy (2009)
  • Author(s): Murakami, M., Ohishi, Y. Hirao, N., Hirose, K
  • Journal Title: Earth and Planetary Science Letters 277 Pages: 123-129
  • Peer Reviewed
• [Journal Article] Determination of post-perovskite phase transition boundary in MgSiO_3 up to 4400 K and implications for thermal structure at the base of the mantle (2009)
  • Author(s): Tateno, S., Hirose. K., Sata, N., Ohishi, Y
  • Journal Title: Earth and Planetary Science Letters 277 Pages: 130-136
  • Peer Reviewed
• [Journal Article] The advanced ion-milling method for preparation of thin film using Ion Slicer : A pplication to a sample recovered from diamond-anvil cell (2009)
  • Author(s): Tateno, S., Sinmyo, R., Hirose, K., Nishioka, H
  • Journal Title: Review of Scientific Instruments 80 Pages: 013901-1-4
  • Peer Reviewed
• [Journal Article] Stagnant slab : A review (2009)
  • Author(s): Fukao, Y, Obayashi, M., Nakakuki, T., and the Deep Slab Project Group (Utada, H., Suetsugu, D., Irifune, T ., Ohtani, E., Yoshioka, S., Shiobara, H., Kanazawa, T., and Hirose, K.)
  • Journal Title: Annual Review of the Earth and Planetary Science (印刷中)
  • Peer Reviewed
• [Journal Article] Experimental study of reaction between perovskite and molten iron to 146 GPa and implications for chemical equilibrium at the core-mantle boundary (2009)
  • Author(s): Ozawa, H., Hirose, K., Mitome, M, Bando, Y, Sata, N., Ohishi, Y
  • Journal Title: Physics and Chemistry of Minerals (印刷中)
  • Peer Reviewed
• [Journal Article] Recent advances in the study of mantle phase transitions (2008)
  • Author(s): Ohtani, E. and Sakai, T
  • Journal Title: Physics of the Earth and Planetary Interiors 170 Pages: 240-247
  • Peer Reviewed
• [Journal Article] Aluminous hydrous mineral delta-AOOH as a carrier of hydrogen into the core-mantle boundary (2008)
  • Author(s): Sano A., Ohtani E., Kondo T., Hira o N., Sakai T., Sata N., Ohishi Y., Kikegawa T
  • Journal Title: Geophysical Research Letters 35 Pages: LO3303
  • Peer Reviewed
• [Journal Article] Application of FIB system to ultra-high-pressure Earth science (2008)
  • Author(s): Miyahara, M., Sakai, T., Ohtani, E., Kobayashi, Y., Kamada, S., Kondo, T., Nagase, T, Yoo, JH, Nishijima, M., Vashaei, Z
  • Journal Title: J. Mineral. Petrol 103 Pages: 88-93
  • Peer Reviewed
• [Journal Article] First principles prediction of the new high pressure phase of InOOH (2008)
  • Author(s): Tsuchiya, J., Tsuchiya, T. , Sano, A. , and Ohtani, E
  • Journal Title: J. Mineral. Petrol. Sci 103 Pages: 116-120
  • Peer Reviewed
• [Journal Article] X-ray diffraction study of high pressure transition in InOOH (2008)
  • Author(s): Sano A., Yagi T., Okada T., Gotou H., Ohtani E., Tsuchiya J., Kikegawa T
  • Journal Title: J. Mineral. Petrol. Sci 103 Pages: 152-155
  • Peer Reviewed
• [Journal Article] Hollandite II phase in KA1Si3O8 as a potential host mineral of potassium in the Earth's lower mantle (2008)
  • Author(s): Hirao N. , Ohtani E. , Kondo T. , Sakai T. , Kikegawa T.
  • Journal Title: Physics of the Earth and Planetary Interiors 166 Pages: 97-104
  • Peer Reviewed
• [Journal Article] Thermal equation of state of magnesite to 32GPa and 2073K (2008)
  • Author(s): Litasov, K.D. , Fei, Y., Ohtani, E. , K uribayashi, T. , Funakoshi, K
  • Journal Title: Phys. Earth Planet. Inter 168 Pages: 191-203
  • Peer Reviewed
• [Journal Article] Single-crystal elasticity of iron-bearing majorite to 26GPa : Implications for seis mic velocity structure of the mantle transitions zone (2008)
  • Author(s): Murakami, M., Sinogeikin V. S., L itasov K., Ohtani E. , Bass D. J
  • Journal Title: Earth and Planetary Science Letters 274 Pages: 339-345
  • Peer Reviewed
• [Journal Article] Crystallographic preferred orientation of akimotoite and seismic anisotropy of Tonga slab (2008)
  • Author(s): Shiraishi R. , Ohtani E. , Kanagawa K Shimojuku A. , Zhao D.
  • Journal Title: Nature 455 Pages: doi : 10.1038 / nature 07301
  • Peer Reviewed
• [Journal Article] Kinetics of the post-garnet transformation : Implications for density and rheology of subducting slabs (2008)
  • Author(s): Kubo, T. , Ohtani, E. , Kato, T. , Kon do, T. , Hosoya, T. , Sano, A. , Kikeg awa, T
  • Journal Title: Physics of the Earth and Planetary Interiors 170 Pages: 181-192
  • Peer Reviewed
• [Journal Article] Frontiers and grand challenges in mineral physics of the deep mantle (2008)
  • Author(s): Lin, J-F. , Karato, S. , Bass, J.D. , Oht ani, E. , Prewitt. , C.T
  • Journal Title: Physics of the Earth and Planetary Interiors 170 Pages: 151-151
  • Peer Reviewed
• [Journal Article] マントル物質の融解とマグマの密度 : そのマントルダイナミクスへの適用 (2008)
  • Author(s): 大谷栄治
  • Journal Title: 高圧力の科学と技術 180 Pages: 160-369
  • Peer Reviewed
• [Journal Article] In situ X-ray diffraction study of Hydrogen partitioning between iron and mantle minerals under high pressure and temperature ; Implications to Hydrogen behavio r at the Martian core-mantle boundary (2008)
  • Author(s): Terasaki, H. , Shibazaki Y, Ohtani E. , Suzuki, A. , Sakamaki T. , Ghosh S. , Nishida K, Funakoshi K
  • Journal Title: SPring-8 User Experimental Report 2008A(Web掲載)
• [Journal Article] MgsiO3ペロブスカイトとポストペロブスカイト相の音速測定 (2008)
  • Author(s): 村上元彦
  • Journal Title: 高圧力の科学と技術 18 Pages: 21-30
  • Peer Reviewed
• [Journal Article] New high-pressure B2 phase of FeS above 180 GPa (2008)
  • Author(s): Sata, N., Ohfuji, H., Hirose, K., Ko bayashi, H, Ohishi, Y, Hirao, N
  • Journal Title: American Mineralogist 93 Pages: 492-494
  • Peer Reviewed
• [Journal Article] Phase transitions in pyrolite and MORB at lowermost mantle conditions : Implicat ions for a MORB-rich pile above the core-mantle boundary (2008)
  • Author(s): Ohta, K., Hirose, K., Lay, T., Sata, N., Ohishi, Y
  • Journal Title: Earth and Planetary Science Letters 267 Pages: 107-117
  • Peer Reviewed
• [Journal Article] Dissociation of CAS phase in the uppermost lower mantle (2008)
  • Author(s): Ishibashi, K., Hirose, K., Sata, N., Ohishi. Y
  • Journal Title: Physics and Chemistry of Minerals 35 Pages: 197-200
  • Peer Reviewed
• [Journal Article] Chemical equilibrium between ferropericlase and molten iron to 134 GPa and im plications for iron content at the bottom of the mantle (2008)
  • Author(s): Ozawa, H., Hirose, K., Mitome, M, Bando, Y. Sata, N., Ohishi, Y
  • Journal Title: Geophysical Research Letters 35 Pages: 342-353
  • Peer Reviewed
• [Journal Article] The electrical conductivity of post-perovskite in Earth's Df, layer (2008)
  • Author(s): Ohta, K., Onoda, S., Hirose, K., Sin myo, R., Shimizu, K., Sata, N., Ohi shi, Y, Yasuhara, A
  • Journal Title: Science 320 Pages: 89-91
  • Peer Reviewed
• [Journal Article] Discovery of post-perovskite phase transition and new views on the core-mantle boundary region (2008)
  • Author(s): Hirose, K., Lay, T
  • Journal Title: Elements 4 Pages: 183-189
  • Peer Reviewed
• [Journal Article] Simultaneous volume measurements of Au and MgO to 140 GPa and thermal eq uation of state of Au based on MgO pressure scale (2008)
  • Author(s): Hirose, K., Sata, N., Komabayashi, T., Ohishi, Y
  • Journal Title: Physics of the Earth and Planetary Interiors 167 Pages: 149-154
  • Peer Reviewed
• [Journal Article] PVT relations in MgO : an ultra-high P-T scale for planetary science applications (2008)
  • Author(s): Wu, Z., R. Wentzcovitch, K. Umem oto, Li, B., Hirose, K., Zheng, J
  • Journal Title: Journal Geophysical Research 113 Pages: 130-136
  • Peer Reviewed
• [Journal Article] The compression of H2O ice to 126 GPa and implications for hydrogen-bond sy mmetrization : Synchrotron x-ray diffraction measurements and density-functional c alculations (2008)
  • Author(s): Sugimura, E., litaka, T., Hirose, K., Kawamura, K., Sata, N., Ohishi, Y
  • Journal Title: Physical Review B 77 Pages: 214103-1-6
  • Peer Reviewed
• [Journal Article] Iron partitioning between perovskite and post-perovskite : A transmission electron microscope study (2008)
  • Author(s): Hirose, K., Takafuji, N., Fujino, K., Shieh. S. R., Duffy. T. S
  • Journal Title: American Mineralogist 93 Pages: 1899-1902
  • Peer Reviewed
• [Journal Article] Ferric iron content in (Mg, Fe) SiO_3 perovskite and post-perovskite in the deep lower mantle conditions (2008)
  • Author(s): Sinmyo, R., Ozawa, H., Hirose, K., Yasuhara, A., Endo, N
  • Journal Title: American Mineralogist 93 Pages: 1899-1902
  • Peer Reviewed
• [Journal Article] Highly intense monochromatic X-ray diffraction facility for high-pressure research at SPring-8 (2008)
  • Author(s): Ohishi, Y., Hirao, N., Sata, N., Hiro se, K., Takata, M
  • Journal Title: High Pressure Research 28 Pages: 163-173
  • Peer Reviewed
• [Journal Article] Phase relations of iron and iron-nickel alloys up to 300 GPa ; Implications for th e composition and the structure of the Earth's inner core (2008)
  • Author(s): Kuwayama, Y., Hirose. K., Sata, N., Ohishi, Y
  • Journal Title: Earth and Planetary Science Letters 273 Pages: 379-385
  • Peer Reviewed
• [Journal Article] Partitioning of iron between perovskite / post-perovskite and ferropericlase in the lower mantle (2008)
  • Author(s): Sinmyo, R., Hirose. K., Nishio-Ham ane, D., Seto, Y, Fujino, K., Sata, N., Ohishi, Y
  • Journal Title: Journal of Geophysical Research 113(Web掲載)
  • Peer Reviewed
• [Journal Article] Solidus of Carbonated Peridotite and petrogenesis of Magnesio-carbonatite in the Earth's Upper Mantle and Transition Zone
  • Author(s): Ghosh, S. , E. Ohtani, K. Litasov, H. Terasaki
  • Journal Title: Chemical Geology (印刷中)
  • Peer Reviewed
• [Journal Article] Development of in-situ Brillouin spectroscopy at high pressure and temperature with synchrotron radiation and infrared laser heating system : Application to the Earth's deep interior
  • Author(s): Murakami, M. , Y. Asahara, Y. Ohish i, N. Hirao and K Hirose
  • Journal Title: Physics of the Earth and Planetary Interiors (印刷中)
  • Peer Reviewed
• [Presentation] High Pressure Mineralogy to Investigate the Deep Earth (2009)
  • Author(s): Murakami, M
  • Organizer: Japanese-French Frontiers of Science Symposium
  • Place of Presentation: Kanagawa(Japan)
  • Year and Date: 20090124-26
• [Presentation] Si diffusivity in Mg_2SiO_4 wadsleyite under nominally dry conditions (2008)
  • Author(s): Shimojuku A., Kubo T., Ohtani E., Nakamura T., Okazaki R
  • Organizer: 日本地球惑星科学連合2008年大会
  • Place of Presentation: 千葉
  • Year and Date: 20081215-30
• [Presentation] Viscosity of NaAISi_2O_6 melt at high pressure (2008)
  • Author(s): Suzuki A., Ohtani E., Terasaki H., Sakamaki T., Nishida K
  • Organizer: 日本地球惑星科学連合2008年大会
  • Place of Presentation: 千葉
  • Year and Date: 20081215-30
• [Presentation] Solid metal-liquid metal partitioning of Pt, Re and Os : Implication for Os isotopic anomalies in plume-derived lavas (2008)
  • Author(s): Hayashi H., Ohtani E., Terasaki H., Ito Y
  • Organizer: 日本地球惑星科学連合2008年大会
  • Place of Presentation: 千葉
  • Year and Date: 20081215-30
• [Presentation] Partitioning of water between iron and ringwoodite : Implications for wa ter transport into the Martian core (2008)
  • Author(s): Shibazaki Y., Ohtani E., Terasaki H., Suzuki A., Funakoshi K
  • Organizer: 日本地球惑星科学連合2008年大会
  • Place of Presentation: 千葉
  • Year and Date: 20081215-30
• [Presentation] Density of basaltic magma at high pressure (2008)
  • Author(s): Sakamaki T., Urakawa S., Ohta ni E., Suzuki A., Katayama Y
  • Organizer: 日本地球惑星科学連合2008年大会
  • Place of Presentation: 千葉
  • Year and Date: 20081215-30
• [Presentation] Si and O diffusion in wadsleyite and ringwoodite (2008)
  • Author(s): Shimojuku A., Kubo T., Ohtani E., Nakamura T., Okazaki R., C hakraborty S., Dohmen R
  • Organizer: 日本地球惑星科学連合2008年大会
  • Place of Presentation: 千葉
  • Year and Date: 20081215-30
• [Presentation] Hydrogen partitioning between FeNi and S -A100H up to core-mantle b oundary condition : Fate of water in the Earth's deep interior (2008)
  • Author(s): Terasaki H., Ohtani E., Sakai, T Kamada, S., Asanuma, H., Sh ibazaki, Y., Hirao, N., Sata, N., Ohishi, Y., Sakamaki, T., Suzuki, A., Funakoshi, K
  • Organizer: American Geophysical Union Fall meeting
  • Place of Presentation: San Francisco(米国)
  • Year and Date: 20081215-19
• [Presentation] ron and silicate reactions and light elements in the core (2008)
  • Author(s): Hirao N., Ohtani E., Asanuma, H., Sakai T., Terasaki H., Miya hara, M., Sata N., Ohishi Y
  • Organizer: American Geophysical Union Fall meeting
  • Place of Presentation: San Francisco(米国)
  • Year and Date: 20081215-19
• [Presentation] Density and structure of basaltic magma under high pressure and high temperature (2008)
  • Author(s): Sakamaki, T., Ohtani E., Suzuki A., Terasaki H., Urakawa S., K atayama Y., Funakoshi K
  • Organizer: American Geophysical Union Fall meeting
  • Place of Presentation: San Francisco(米国)
  • Year and Date: 20081215-19
• [Presentation] Effect of Water on topography of 660 km Seismic Discontinuity : Experi mental View (2008)
  • Author(s): Ghosh S., Ohtani E., Suzuki A., Litasov K., Terasaki H., Funak oshi K
  • Organizer: American Geophysical Union Fall meeting
  • Place of Presentation: San Francisco(米国)
  • Year and Date: 20081215-19
• [Presentation] Partitioning of Ni and Co between liquid metal and ferropericlase at high pressures (2008)
  • Author(s): Sawada, N., Ohtani E., Sakai T., Terasaki H., Miyahara M., Kamada S
  • Organizer: American Geophysical Union Fall meeting
  • Place of Presentation: San Francisco(米国)
  • Year and Date: 20081215-19
• [Presentation] Effects of pressure and composition on Pt-Re-Os partitioning behavior b etween solid and liquid metal in the Fe-Ni-S system : Implication for Os isotopic anomalies in plume-derived lavas (2008)
  • Author(s): Hayashi H., Ohtani E.', Terasaki H., Ito Y
  • Organizer: American Geophysical Union Fall meeting
  • Place of Presentation: San Francisco(米国)
  • Year and Date: 20081215-19
• [Presentation] Elasticity of MgO to 130 GPa : Implications for lower mantle mineralogy (2008)
  • Author(s): Murakami, M, Y. Ohishi, N. Hirao and K. Hirose
  • Organizer: American Geophysical Union, Fall Meeting 2008
  • Place of Presentation: San Francisco(米国)
  • Year and Date: 20081215-19
• [Presentation] Experimental study of reaction between perovskite and molten iron to 146 GPa and implications for chemically-distinct buoyant layer at the top of the core (2008)
  • Author(s): Hirose, K
  • Organizer: Fall Meeting, American Geophysical Union
  • Place of Presentation: San Francisco(米国)
  • Year and Date: 20081215-19
• [Presentation] X線その場観察浮沈法によるFe三S融体の密度測定 (2008)
  • Author(s): 鈴木昭夫, 大谷栄治, 西田圭佑, 寺崎英紀坂巻竜也, 柴崎裕樹, 林宏美, 亀卦川卓美
  • Organizer: 第49回高圧討論会
  • Place of Presentation: 姫路
  • Year and Date: 20081112-14
• [Presentation] 高温高圧下における熔融鉄とfbrropericlase間のニッケル・コバルト分配 (2008)
  • Author(s): 澤田直輝, 大谷栄治, 壌毅, 寺崎英紀, 宮原正明, 鎌田誠司
  • Organizer: 第49回高圧討論会
  • Place of Presentation: 姫路
  • Year and Date: 20081112-14
• [Presentation] 金属鉄の固相-液相間のPt, Re, Osの分配の圧力依存性 : プルーム起源マグマのOs同位体異常への応用 (2008)
  • Author(s): 林宏美, 大谷栄治, 寺崎英紀, 伊藤嘉紀
  • Organizer: 第49回高圧討論会
  • Place of Presentation: 姫路
  • Year and Date: 20081112-14
• [Presentation] 放射光X線を用いた高温高圧下での鉄-リングウッダイト間の水素分配 : 火星核マントル境界での水素の挙動解明 (2008)
  • Author(s): 柴崎裕樹, 大谷栄治, 寺崎英紀, 鈴木昭夫, 坂巻竜也, 林宏美, 西田圭佑, 舟越賢一
  • Organizer: 第49回高圧討論会
  • Place of Presentation: 姫路
  • Year and Date: 20081112-14
• [Presentation] Sound Velocities of Lower Mantle Minerals : Implications for lower mantle mineralogy (2008)
  • Author(s): Murakami, M
  • Organizer: 第49回高圧討論会
  • Place of Presentation: 姫路
  • Year and Date: 20081112-14
• [Presentation] 高圧高温下におけるNaAISi206メルトの粘度 (2008)
  • Author(s): 鈴木昭夫, 大谷栄治, 寺崎英紀, 西田圭佑, 林宏美, 坂巻竜也, 亀卦川卓美
  • Organizer: 日本鉱物科学会2008年度年会
  • Place of Presentation: 秋田
  • Year and Date: 20080920-22
• [Presentation] ホットスポットマグマのOs同位体異常の起源とRe, Os, Ptの内核分別作用の可能性 (2008)
  • Author(s): Ohtani E., Hayashi H., Sakai T., Miyahara M., Takahata N., Sano Y
  • Organizer: 日本鉱物科学会2008年度年会
  • Place of Presentation: 秋田
  • Year and Date: 20080920-22
• [Presentation] 高温高圧下におけるペリドタイトマグマの密度測定 (2008)
  • Author(s): Sakamaki T., Ohtani E., Uraka wa S., Suzuki A., Katayama Y., Terasaki H., Nishida K., Hayash i H., Nakano Y
  • Organizer: 日本鉱物科学会2008年度年会
  • Place of Presentation: 秋田
  • Year and Date: 20080920-22
• [Presentation] 高温高圧下におけるNaAISi206メルトの粘度 (2008)
  • Author(s): Suzuki A., Ohtani E., Terasaki H., Nishida K., Hayashi H., Sak amaki T., Kikegawa T
  • Organizer: 日本鉱物科学会2008年度年会
  • Place of Presentation: 秋田
  • Year and Date: 20080920-22
• [Presentation] ウォズレアイトとリングウッダイト中の原子拡散とマントル遷移層のレオロジーへの適用 (2008)
  • Author(s): Shimojyuku A., Kubo T., Ohtani E., Nakamura T., Okazaki R., Chakraborty S., Dohmen R
  • Organizer: 日本鉱物科学会2008年度年会
  • Place of Presentation: 秋田
  • Year and Date: 20080920-22
• [Presentation] コアーマントル境界域における元素移動の解明に向けて (2008)
  • Author(s): Hirose, K
  • Organizer: 地球化学会2008年会
  • Place of Presentation: 東京
  • Year and Date: 20080917-21
• [Presentation] 高圧地球化学からみた地球の進化とダイナミクス (2008)
  • Author(s): Ohtani E
  • Organizer: 2008年度日本地球化学会年会
  • Place of Presentation: 東京
  • Year and Date: 20080917-19
• [Presentation] High-pressure phase transitions of deep Earth materials (2008)
  • Author(s): Hirose, K
  • Organizer: IUCr 2008
  • Place of Presentation: Osaka
  • Year and Date: 20080823-31
• [Presentation] Properties and dynamics of mantle and core (2008)
  • Author(s): Bernhard Steinberger, Eiji Ohta ni, Geld Steinle-Neumann, Jame s Connolly, Shun-ichiro Karato
  • Organizer: The 33 rd International Geological Congress 2008
  • Place of Presentation: Oslo(ノルウェー)
  • Year and Date: 20080806-14
• [Presentation] Chemical reactions and element partitioning at the core-mantle boundary (2008)
  • Author(s): Ohtani E
  • Organizer: Goldschmidt 2008
  • Place of Presentation: Vancouver(カナダ)
  • Year and Date: 20080713-18
• [Presentation] Role of Hydrogen in the Mantle Transition Zone (2008)
  • Author(s): Ohtani E., Kudo T., Ghosh S., S himojuku A., Suzuki A
  • Organizer: AOGS 2008
  • Place of Presentation: Busan(韓国)
  • Year and Date: 20080616-20
• [Presentation] Heterogeneous distribution of hydrogen in the mantle transition zone (2008)
  • Author(s): Ohtani E
  • Organizer: International Symposium on Lithosphere Petrolog y and Origin of Diamond dedicated to the 100th anniversary of Prof. Vladimir S. Sobolev
  • Place of Presentation: Novosibirsk(ロシア)
  • Year and Date: 20080602-09
• [Presentation] Experimental determination of post-spinel transition in Mg_2SiO_4-H_2O s ystem and implication for 660 Km seismic discontinuity (2008)
  • Author(s): Ghosh S., Ohtani E., Suzuki A., Terasaki H., Funakoshi K
  • Organizer: 日本地球惑星科学連合2008年大会
  • Place of Presentation: 千葉
  • Year and Date: 20080525-30
• [Presentation] Transport properties of the mantle transition zone minerals (2008)
  • Author(s): Ohtani E., Kubo T., Shindou S., Shimojuku A., Suzuki A
  • Organizer: 日本地球惑星科学連合2008年大会
  • Place of Presentation: 千葉
  • Year and Date: 20080525-30
• [Presentation] 高圧高温下におけるNaAlsi206メルトの粘度 (2008)
  • Author(s): 鈴木昭夫, 大谷栄治, 寺崎英紀, 坂巻竜也, 西田圭佑
  • Organizer: 日本地球惑星科学連合2008年大会
  • Place of Presentation: 千葉
  • Year and Date: 20080525-30
• [Presentation] Water in the transition zone, lower mantle, and core (2008)
  • Author(s): Ohtani E., Ghosh S., Sano A., Litasov K.D
  • Organizer: EGU General Assembly 2008
  • Place of Presentation: Vienna(オーストリア)
  • Year and Date: 20080413-18
• [Presentation] Elasticity of DHMS at mantle pressures : Implication for seismic velocities and an isotropy of subducted slabs (2008)
  • Author(s): Sanchez-Valle C., Litasov K.D., Sin ogeikin S.V., Smyth J.R, Ohtani E., Bass J.D
  • Organizer: EGU General Assembly 2008
  • Place of Presentation: Viemna(オーストリア)
  • Year and Date: 20080413-18