The transition of magma from the early days to the present inferred from high-pressure magma science

• Project/Area Number: 17H04860
• Research Category: Grant-in-Aid for Young Scientists (A)
• Allocation Type: Single-year Grants
• Research Field: Petrology/Mineralogy/Economic geology
• Research Institution: Tohoku University
• Principal Investigator: Sakamaki Tatsuya 東北大学, 理学研究科, 助教 (30630769)
• Project Period (FY): 2017-04-01 – 2021-03-31
• Project Status: Completed (Fiscal Year 2020)
• Budget Amount: ¥24,440,000 (Direct Cost: ¥18,800,000、Indirect Cost: ¥5,640,000); Fiscal Year 2020: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000); Fiscal Year 2019: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000); Fiscal Year 2018: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000); Fiscal Year 2017: ¥11,180,000 (Direct Cost: ¥8,600,000、Indirect Cost: ¥2,580,000)
• Keywords: magma / high pressure / silicate glass / 高圧 / 構造物性 / マグマ / 珪酸塩ガラス / 高温 / 水 / 溶融 / ガラス / 構造 / 物性 / 初期地球

Outline of Final Research Achievements

Based on high-pressure experiments, I succeeded in clarifying the behavior of magma (molten rock) that has existed inside the Earth from the early stages of Earth formation to the present. In particular, I was able to collect a large amount of systematic experimental data regarding the structural properties and chemical composition dependence of magma and silicate glass. Furthermore, I could experimentally determine the melting conditions of the deep part of the Earth and propose an internal model of the Earth that can interpret geophysical exploration data.

Academic Significance and Societal Importance of the Research Achievements

「どのような過程を経て、現在の地球の内部構造が形成されたのか？そして、現在の地球内部の活動はどのようなものなのか？」は地球の成り立ちに関する根源的な問いになります。その問いに答えるため・近づくためには、高温高圧下でのマグマの実験的研究データが決定的に不足している状況であったが、本研究成果によってマグマの構造物性に関する新しい情報を提供することができた。

Research Products

• [Journal Article] Elastic properties and structures of pyrope glass under high pressures (2021)
  • Author(s): Hisano Naoki、Sakamaki Tatsuya、Ohashi Tomonori、Funakoshi Ken-ichi、Higo Yuji、Shibazaki Yuki、Suzuki Akio
  • Journal Title: American Mineralogist Volume: 106 Issue: 1 Pages: 7-14
  • DOI: 10.2138/am-2020-7410
  • Peer Reviewed
• [Journal Article] Effects of alkali and alkaline-earth cations on the high-pressure sound velocities of aluminosilicate glasses (2020)
  • Author(s): Aoki Koji、Sakamaki Tatsuya、Ohashi Tomonori、Ikeda Osamu、Suzuki Akio
  • Journal Title: Physics and Chemistry of Minerals Volume: 47 Issue: 6 Pages: 28-28
  • DOI: 10.1007/s00269-020-01098-3
  • Peer Reviewed
• [Journal Article] An experimental system for time-resolved x-ray diffraction of deforming silicate melt at high temperature (2020)
  • Author(s): Okumura, S., Uesugi, K., Sakamaki, T., Goto, A., Uesugi, M., Takeuchi, A.
  • Journal Title: Review of Scientific Instruments Volume: 91 Issue: 9 Pages: 155-160
  • DOI: 10.1063/5.0009769
  • Peer Reviewed
• [Journal Article] The sound velocity of wustite at high pressures: implications for low-velocity anomalies at the base of the lower mantle (2020)
  • Author(s): Tanaka Ryosuke、Sakamaki Tatsuya、Ohtani Eiji、Fukui Hiroshi、Kamada Seiji、Suzuki Akio、Tsutsui Satoshi、Uchiyama Hiroshi、Baron Alfred Q.R.
  • Journal Title: Progress in Earth and Planetary Science Volume: 7 Issue: 1 Pages: 23-23
  • DOI: 10.1186/s40645-020-00333-3
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Phase and melting relations of Fe3C to 300 GPa and carbon in the core (2020)
  • Author(s): Takahashi, S., Ohtani, E., Sakai, T., Kamada, S., Ozawa, S., Sakamaki, T., Miyahara, M., Ito, Y., Hirao, N., Ohishi, Y.
  • Journal Title: Carbon in Earth’s Interior, Geophysical Monograph Volume: 249 Pages: 25-36
  • Peer Reviewed
• [Journal Article] Hydrous magnesium-rich magma genesis at the top of the lower mantle (2019)
  • Author(s): Nakajima Ayano、Sakamaki Tatsuya、Kawazoe Takaaki、Suzuki Akio
  • Journal Title: Scientific Reports Volume: 9 Issue: 1 Pages: 7420-7420
  • DOI: 10.1038/s41598-019-43949-2
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Sound velocity measurements of ε–FeOOH up to 24 GPa (2019)
  • Author(s): Ikeda, O., Sakamaki, T., Ohashi, T., Goto, M., Higo, Y., and Suzuki, A.
  • Journal Title: Journal of Mineralogical and Petrological Sciences Volume: 114 Issue: 3 Pages: 155-160
  • DOI: 10.2465/jmps.181115b
  • NAID: 130007677825
  • ISSN: 1345-6296, 1349-3825
  • Peer Reviewed / Open Access
• [Journal Article] Pressure and composition effects on sound velocity and density of core-forming liquids: Implication to core compositions of terrestrial planets (2019)
  • Author(s): H. Terasaki, A. Rivoldini, Y. Shimoyama, K. Nishida, S. Urakawa, M. Maki, F. Kurokawa, Y. Takubo, Y. Shibazaki, T. Sakamaki, A. Machida, Y. Higo, K. Uesugi, A. Takeuchi, T. Watanuki, T. Kondo
  • Journal Title: Journal of Geophysical Research Volume: 124 Issue: 8 Pages: 2272-2293
  • DOI: 10.1029/2019je005936
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Sound velocity of Fe3C at high pressure and high temperature determined by inelastic X-ray scattering (2019)
  • Author(s): Takahashi, S., Ohtani, E., Sakamaki, T., Kamada, S., Fukui, H., Tsutsui, S., Uchiyama, H., Ishikawa, D., Hirao, N., Ohishi, Y., Baron, A.Q.R.
  • Journal Title: Comptes Rendus Geoscience Volume: -
  • Peer Reviewed / Open Access
• [Journal Article] 部分溶融岩石の弾性波速度測定：上部マントル底部の地震波低速度異常への適用 (2019)
  • Author(s): 坂巻竜也、鈴木昭夫、大橋智典、池田理、後藤雅久、肥後祐司
  • Journal Title: SPring-12 Experimental Summary Report Volume: -
  • Open Access
• [Journal Article] Pressure-induced structural changes of basaltic glass (2018)
  • Author(s): Ohashi, T., Sakamaki, T., Funakoshi, K., Suzuki, A.
  • Journal Title: Journal of Mineralogical and Petrological Sciences Volume: 113 Pages: 286-292
  • NAID: 130007543861
  • Peer Reviewed / Open Access
• [Journal Article] 形成期の惑星内部における鉄合金メルトとケイ酸塩の分離過程 (2018)
  • Author(s): 岸本俊八, 浦川啓, 寺﨑英紀, 桑原荘馬, 西田圭佑, 坂巻竜也, 竹内晃久, 上杉健太朗
  • Journal Title: SPring-8/SACLA利用研究成果集 Volume: 25 Pages: 208-211
  • NAID: 130007969558
  • Peer Reviewed / Open Access
• [Journal Article] 炭酸塩マグマの弾性波速度測定：プチスポット火山のマグマソースへの適応 (2018)
  • Author(s): 坂巻竜也、大橋智典、池田理、後藤雅久、肥後祐司、鈴木昭夫
  • Journal Title: SPring-8 Experimental Summary Report Volume: -
  • Open Access
• [Journal Article] 高圧下における鉄－軽元素合金の音速測定と密度の測定から見た核および核マントル境界の構造の解明 (2018)
  • Author(s): 大谷栄治、坂巻竜也、生田大穣、福井宏之、鎌田誠司、Yuan Liang、Baron Alfred
  • Journal Title: SPring-9 Experimental Summary Report Volume: - Pages: 7-7
  • Open Access
• [Journal Article] 爆発的火山噴火の誘発要因であるマグマ粉砕メカニズムの解明：破壊のその場観察 (2018)
  • Author(s): 奥村聡、坂巻竜也、後藤章夫
  • Journal Title: SPring-10 Experimental Summary Report Volume: -
  • Open Access
• [Journal Article] 放射光メスバウア分光とX線回折実験による鉄軽元素系の相平衡と物性 (2018)
  • Author(s): 大谷栄治、生田大穣、鎌田誠司、坂巻竜也、Yuan Liang、鈴木昭夫、Koemets Egor
  • Journal Title: SPring-11 Experimental Summary Report Volume: -
  • Open Access
• [Journal Article] Sound velocity measurements of hcp Fe-Si alloy at high pressure and high temperature by inelastic X-ray scattering (2018)
  • 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
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Density of hydrous magma (2017)
  • Author(s): Sakamaki Tatsuya
  • Journal Title: Chemical Geology Volume: 475 Pages: 135-139
  • DOI: 10.1016/j.chemgeo.2017.11.012
  • Peer Reviewed
• [Journal Article] Density of jadeite melts under high pressure and high temperature conditions (2017)
  • 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
  • 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
  • Peer Reviewed
• [Journal Article] Compressional sound velocity of hexagonal close-packed iron up to 163 GPa and 3000 K (2017)
  • Author(s): Sakamaki, T., Ohtani, E., Fukui, H., Baron, A.Q.R.
  • Journal Title: Reseaech Frontiers 2016 Volume: － Pages: 92-93
  • 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
  • Open Access
• [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 (2017)
  • Author(s): 坂巻竜也
  • Journal Title: SPring-8/SACLA利用者情報 Volume: 23 Pages: 14-17
  • 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: －
  • 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: －
  • 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: －
  • 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: －
  • 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: －
  • 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: －
  • 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: －
  • 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: －
  • 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: －
  • 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: －
  • 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: －
  • Open Access
• [Presentation] Sound velocity measurements of B2-FeNiSi alloy under high pressure by inelastic X-ray scattering: implications for the composition of the Earth’s core (2021)
  • Author(s): Dominijanni, S., McCammon, C., Ohtani, E., Ikuta, D., Sakamaki, T., Ishii, T., Crinti, G., Dubrovinsky L.S., Khandarkhaeva, S., Fedotenko, T., Glazyrin, K., Uchiyama H., Fukui, H., Baron, A.Q.R.,
  • Organizer: International Symposium on Experimental Mineralogy, Petrology and Geochmistry
  • Int'l Joint Research
• [Presentation] Effect of water on the structure of sodium silicate melts under pressure (2020)
  • Author(s): Ohashi, T., Sakamaki, T., Funakoshi, K., Muranushi, M., Shito, C., Ikeda, O., Shibazaki, Y., Suzuki, A.
  • Organizer: JpGU-AGU Joint Meeting 2020
  • Int'l Joint Research
• [Presentation] Density of Fe3+-bearing magma at high pressure (2020)
  • Author(s): Ban, R., Sakamaki, T., Suzuki, A.
  • Organizer: JpGU-AGU Joint Meeting 2020
  • Int'l Joint Research
• [Presentation] Phase boundary and kinetics of moganite-coesite phase transition at high-pressure and high-temperature: implications for an impact event and trace of water on the Moon (2020)
  • Author(s): Ozawa, S., Kayama, M., Sakamaki, T., Ohashi, T., Suzuki, A.
  • Organizer: JpGU-AGU Joint Meeting 2020
  • Int'l Joint Research
• [Presentation] Sound velocity of B2-FeNiSi alloy at high pressure determined with inelastic X-ray scattering: implications for the composition of the Earth’s inner core (2020)
  • Author(s): Dominijanni, S., Ohtani, E., Ikuta, D., Sakamaki, T., Fukui, H., McCammon, C.A, Dubrovinsky, L.S., Uchiyama H., Baron, A.Q.R.
  • Organizer: JpGU-AGU Joint Meeting 2020
  • Int'l Joint Research
• [Presentation] Formation of highly pure anorthite crust on the low-volatile astral bodies by low-viscous magma ocean (2019)
  • Author(s): Sakamaki, T., Kono, Y.
  • Organizer: Japan Geoscience Union Meeting 2019
  • Int'l Joint Research
• [Presentation] The effect of water and redox state on melting at the top of the lower mantle (2019)
  • Author(s): Nakajima, A., Sakamaki, T., Suzuki, A.
  • Organizer: Japan Geoscience Union Meeting 2019
  • Int'l Joint Research
• [Presentation] High-pressure structural investigations for hydrous sodium silicate melts (2019)
  • Author(s): Ohashi, T., Sakamaki, T., Funakoshi, K., Muranushi, M., Shito, C., Shibazaki, Y., Suzuki, A.
  • Organizer: Japan Geoscience Union Meeting 2019
  • Int'l Joint Research
• [Presentation] Elastic property and stracture of pyrope glass at high pressure (2019)
  • Author(s): Hisano, N., Sakamaki, T., Ohashi, T., Funakoshi, K., Higo, Y., Shibazaki, Y., Suzuki, A.
  • Organizer: Japan Geoscience Union Meeting 2019
  • Int'l Joint Research
• [Presentation] In-situ Raman spectroscopy of ε-FeOOH under high pressures (2019)
  • Author(s): Ikeda, O., Sakamaki, T., Suzuki, A.
  • Organizer: Japan Geoscience Union Meeting 2019
  • Int'l Joint Research
• [Presentation] Raman spectroscopic measurements of ε-FeOOH at high pressures (2019)
  • Author(s): Ikeda, O., Sakamaki, T., Suzuki, A.
  • Organizer: JSPS Japan-German graduate externship International Workshop on “Volatile Cycles”
  • Int'l Joint Research
• [Presentation] The effect of redox state on the hydrous melt in the deep mantle (2019)
  • Author(s): Nakajima, A., Sakamaki, T., Suzuki, A.
  • Organizer: JSPS Japan-German graduate externship International Workshop on “Volatile Cycles”
  • Int'l Joint Research
• [Presentation] High-pressure structures of hydrous sodium silicate melts (2019)
  • Author(s): Ohashi, T., Sakamaki, T., Funakoshi, K., Muranushi, M., Shito, C., Shibazaki, Y., Suzuki, A.
  • Organizer: JSPS Japan-German graduate externship International Workshop on “Volatile Cycles”
  • Int'l Joint Research
• [Presentation] High-pressure behavior of ε-FeOOH inferred from experimental study (2019)
  • Author(s): Ikeda, O., Sakamaki, T., Suzuki, A.
  • Organizer: 57th EHPRG Meeting on High Pressure Science and Technology
  • Int'l Joint Research
• [Presentation] Structural study of hydrous sodium silicate melts under high pressure (2019)
  • Author(s): Ohashi, T., Funakoshi, K., Sakamaki, T.
  • Organizer: 57th EHPRG Meeting on High Pressure Science and Technology
  • Int'l Joint Research
• [Presentation] Structures of dry and hydrous silicate glasses and melts under pressure (2019)
  • Author(s): Ohashi, T., Sakamaki, T., Funakoshi, K., Hattori, T., Muranushi, M., Shito, C., Shibazaki, Y., Sano-Furukawa, A., Suzuki, A.
  • Organizer: The 10th workshop for extreme materials science “Silicate Melts and Glass”
  • Int'l Joint Research
• [Presentation] 高圧力下における含水非晶質ナトリウム珪酸塩の構造 (2019)
  • Author(s): 大橋智典、坂巻竜也、舟越賢一、服部高典、佐野亜沙美、村主樹、市東力、池田理、伊東義章、柴崎裕樹、鈴木昭夫
  • Organizer: 日本鉱物科学会2019年会
• [Presentation] 高温高圧条件下におけるFe-Ni合金の音速-密度関係 (2019)
  • Author(s): 坂巻竜也、大谷栄治、福井宏之、鎌田誠司、Baron Alfred
  • Organizer: 第60回高圧討論会
• [Presentation] Vibrational properties of ε-FeOOH under high pressures (2019)
  • Author(s): 池田理、坂巻竜也、福井宏之、内山裕士、Baron Alfred、鈴木昭夫
  • Organizer: 第60回高圧討論会
• [Presentation] Structures of hydrous sodium silicate melts under high pressure and high temperature (2019)
  • Author(s): Ohashi, T., Sakamaki, T., Funakoshi, K., Muranushi, M., Shito, C., Shibazaki, Y., Suzuki, A.
  • Organizer: Joint symposium of Misasa 2019 & Core-Mantle Coevolution
  • Int'l Joint Research
• [Presentation] Viscosity of magmas at high pressure (2018)
  • Author(s): Sakamaki, T.
  • Organizer: Japan Geoscience Union Meeting 2018
  • Int'l Joint Research
• [Presentation] Elastic wave velocity of Fe-Si alloy at high pressure (2018)
  • Author(s): Sakamaki, T., Terasaki, H., Shibazaki, Y., Tobe, H., Shimoyama, Y., Higo, Y., Suzuki, A.
  • Organizer: Japan Geoscience Union Meeting 2018
  • Int'l Joint Research
• [Presentation] Melting phenomeon at the top of the lower mantle (2018)
  • Author(s): Nakajima, A., Sakamaki, T., Kawazoe, T., Suzuki, A.
  • Organizer: Japan Geoscience Union Meeting 2018
  • Int'l Joint Research
• [Presentation] Understanding of low velocity anomaly in the asthenosphere inferred from elastic wave velocity measurement of partially molten rocks (2018)
  • Author(s): Ohashi, T., Sakamaki, T., Hisano, N., Higo, Y., Shibazaki, Y., Suzuki, A.
  • Organizer: Japan Geoscience Union Meeting 2018
  • Int'l Joint Research
• [Presentation] Correlation between structure and elastic wave velocity of pyrope glass at high pressure (2018)
  • Author(s): Hisano, N., Sakamaki, T., Ohashi, T., Funakoshi, K., Higo, Y., Shibazaki, Y., Suzuki, A.
  • Organizer: Japan Geoscience Union Meeting 2018
  • Int'l Joint Research
• [Presentation] Structural investigations of basaltic glass under high pressure using X-ray and neutron diffraction techniques (2018)
  • Author(s): Ohashi, T., Sakamaki, T., Hattori, T., Sano, A., Funakoshi, K., Suzuki, A.
  • Organizer: Japan Geoscience Union Meeting 2018
  • Int'l Joint Research
• [Presentation] Compressional velocity of hcp Fe-Si alloy by inelastic X-ray scattering and composition of the inner core (2018)
  • Author(s): Ohtani, E., Sakairi, T., Sakamaki, T., Fukui, H., Kamada, S., Tsutsui, S., Uchiyama, H., Baron, A.Q.R.
  • Organizer: Japan Geoscience Union Meeting 2018
  • Int'l Joint Research
• [Presentation] Sound velocity of liquid Fe-Ni-S-Si at mercury outer core condition (2018)
  • Author(s): Yamada, I., Terasaki, H., Kamiya, A., Nishida, K., Sakamaki, T., Higo, Y., Tange, Y., Kondo, T.
  • Organizer: Japan Geoscience Union Meeting 2018
  • Int'l Joint Research
• [Presentation] Core composition of Mercury estimated from elastic properties of liquid Fe-Ni-alloy (2018)
  • Author(s): Terasaki, H., Rivoldini, A., Shimoyama, Y., Nishida, K., Urakawa, S., Kurokawa, F., Takubo, Y., Shibazaki, Y., Sakamaki, T., Machida, A., Higo, Y., Tange, Y., Kondo, T.
  • Organizer: Japan Geoscience Union Meeting 2018
  • Int'l Joint Research
• [Presentation] Stability of MgCO3 in Fe-rich hydrous lower mantle (2018)
  • Author(s): Maeda, F., Kamada, S., Miyajima, N., Petitgiard, S., Hirao, N., McCammon, C., Frost, D., Sakamaki, T., Suzuki, A.
  • Organizer: Earth, Sea and Sky III: International Joint Graduate Program Workshop in Earth and Environmental Sciences
  • Int'l Joint Research
• [Presentation] Structure of basaltic glass under high pressure by in-situ x-ray and neutron diffraction investigations (2018)
  • Author(s): Ohashi, T., Sakamaki, T., Hattori, T., Sano, A., Funakoshi, K., Suzuki, A.
  • Organizer: Earth, Sea and Sky III: International Joint Graduate Program Workshop in Earth and Environmental Sciences
  • Int'l Joint Research
• [Presentation] Sound velocity Measurement of iron-nickel alloy: Implications for a unified Earth’s inner core model consistent with geophysiocal and geochemical observations (2018)
  • Author(s): Sakamaki, T.
  • Organizer: Asia Oceania Geoscience Society 15th Annual Meeting
  • Int'l Joint Research
• [Presentation] Reaction of MgCO3 high-pressure carbonate and metallic iron in the deep lower mantle (2018)
  • Author(s): Maeda, F., Kamada, S., Miyajima, N., Petitgiard, S., Hirao, N., Sakamaki, T., McCammon, C., Frost, D., Ohishi, Y., Suzuki, A.
  • Organizer: 56th EHPRG meeting
  • Int'l Joint Research
• [Presentation] Water effect on the mantle melting at the top of the lower mantle (2018)
  • Author(s): Nakajima, A., Sakamaki, T., Kawazoe, T., Suzuki, A.
  • Organizer: 56th EHPRG meeting
  • Int'l Joint Research
• [Presentation] 月玄武岩の弾性波速度測定：月マントル底部で低速度異常への適用 (2018)
  • Author(s): 坂巻竜也、河野義生、Wang Yanbin
  • Organizer: 日本鉱物科学会2018年会
• [Presentation] 高圧下でのε-FeOOHの弾性波速度測定 (2018)
  • Author(s): 池田理、坂巻竜也、大橋智典、後藤雅久、肥後祐司、鈴木昭夫
  • Organizer: 日本鉱物科学会2018年会
• [Presentation] H2OとFeに富んだ下部マントル環境下におけるMgCO3の安定性 (2018)
  • Author(s): 前田郁也、鎌田誠司、宮島延吉、平尾直久、河口沙織、Petitgirard Sylvain、McCammon Catherine、Frost Daniel、坂巻竜也、鈴木昭夫
  • Organizer: 第59回高圧討論会
• [Presentation] X線・中性子回折による玄武岩質ガラスの圧力誘起構造変化 (2018)
  • Author(s): 大橋智典、坂巻竜也、舟越賢一、服部高典、佐野亜沙美、鈴木昭夫
  • Organizer: 第59回高圧討論会
• [Presentation] Sound velocity measurement of rhenium at extreme pressure conditions by inelastic X-ray scattering (2018)
  • Author(s): 生田大穣、大谷栄治、坂巻竜也、福井宏之、石川大介、Baron Alfred
  • Organizer: 第59回高圧討論会
• [Presentation] Sound velocity of hcp-Fe at multi-megabar pressures (2017)
  • Author(s): Sakamaki, T., Fukui, H., Ohtani, E., Tanaka, R., Baron, A.Q.R.
  • Organizer: JpGU-AGU Joint Meeting 2017
  • 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 boundary (2017)
  • 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
  • Int'l Joint Research
• [Presentation] Phase relations in the Fe-FeSi system at 10 GPa : Implications for Mercury’s core (2017)
  • Author(s): Tobe, H., Shibazaki, Y., Sakamaki, T., Hiroi, Y., Abe, R., Suzuki, A.
  • Organizer: JpGU-AGU Joint Meeting 2017
  • 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 mantle (2017)
  • Author(s): Igarashi, M., Shibazaki, Y., Shiraishi, R., Sakamaki, T., Suzuki, A.
  • Organizer: JpGU-AGU Joint Meeting 2017
  • Int'l Joint Research
• [Presentation] Composition of the core: Geochemical and mineral physics constraints (2017)
  • Author(s): Ohtani, E., Sakairi, T., Sakamaki, T., Kamada, S., Tanaka, R., Fukui, H., Baron, A.Q.R.
  • Organizer: JpGU-AGU Joint Meeting 2017
  • Int'l Joint Research
• [Presentation] The heterogeneities in Lunar interior: Role of High Titanium materials (2017)
  • Author(s): Ohtani, E., Igarashi, M., Sakamaki, T., Zhao, D.
  • Organizer: JpGU-AGU Joint Meeting 2017
  • Int'l Joint Research
• [Presentation] Phase relation in MgCO3-SiO2 system up to the lowermost mantle (2017)
  • Author(s): Maeda, F., Ohtani, E., Kamada, S., Sakamaki, T., Hirao, N., Ohishi, Y.
  • Organizer: JpGU-AGU Joint Meeting 2017
  • Int'l Joint Research
• [Presentation] High-pressure phase transitions of MgCO3 under the lower mantle conditions (2017)
  • Author(s): Maeda, F., Kamada, S., Sakamaki, T., Hirao, N., Ohishi, Y., Suzuki, A.
  • Organizer: JpGU-AGU Joint Meeting 2017
  • Int'l Joint Research
• [Presentation] Interior structure of Mars estimated from elastic properties of liquid Fe-Ni-S (2017)
  • 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
  • Int'l Joint Research
• [Presentation] Basaltic glass structure by time-of-flight neutron diffraction (2017)
  • Author(s): Sakamaki, T., Hattori, T., Sano-Furukawa, A.
  • Organizer: Goldschmidt 2017
  • Int'l Joint Research
• [Presentation] Geochemical and mineral physics constraints on the composition of the inner core (2017)
  • Author(s): Ohtani, E., Sakamaki, T., Sakairi, T., Tanaka, R., Kamada, S., Fukui, H., Barao, A.Q.R.
  • Organizer: Goldschmidt 2017
  • Int'l Joint Research
• [Presentation] Densification of calcium-aluminum-silicate glass at the pressure of ~5.5 GPa (2017)
  • Author(s): Nakajima, A., Sakamaki, T., Hisano, N., Horioka, Y., Suzuki, A.
  • Organizer: 55th EHPRG Meeting
  • Int'l Joint Research
• [Presentation] Phase relations of MgCO3 high-pressure carbonate under the lower mantle conditions (2017)
  • Author(s): Maeda, F., Kamada, S., Sakamaki, T., Miyajima, N., Hirao, N., Ohishi, Y., Suzuki, A.
  • Organizer: 55th EHPRG Meeting
  • Int'l Joint Research
• [Presentation] Structure measurement of basaltic glass using neutron diffraction (2017)
  • Author(s): Sakamaki, T.
  • Organizer: High-Pressure Mineral Physics Seminar
  • Int'l Joint Research
• [Presentation] Sound velocity of iron-light element compounds and composition of the inner core (2017)
  • Author(s): Ohtani, E., Sakamaki, T., Kamada, S., Ikuta, D., Tanaka, R., Fukui, H., Baron, A.Q.R.
  • Organizer: High-Pressure Mineral Physics Seminar
  • Int'l Joint Research
• [Presentation] Compressibility of MgCO3 phase II under the lowermost mantle conditions (2017)
  • Author(s): Maeda, F., Kamada, S., Sakamaki, T., Hirao, N., Ohishi, Y., Suzuki, A.
  • Organizer: High-Pressure Mineral Physics Seminar
  • Int'l Joint Research
• [Presentation] Sound velocity and elastic properties of liquid Fe-Ni-Si at high pressure (2017)
  • 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
  • Int'l Joint Research
• [Presentation] Structure measurements of basaltic glass at high pressure using X-ray and neutron diffraction techniques (2017)
  • 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”
  • Int'l Joint Research
• [Presentation] Structures of basaltic glass under high pressure by in-situ X-ray and neutron diffraction investigations (2017)
  • 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
  • Int'l Joint Research
• [Presentation] Melting experiments of hydrous peridotite under the top of the lower mantle conditions (2017)
  • 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
  • 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
  • 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
• [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
• [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
• [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
  • 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
• [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
• [Book] Carbon in Earth’s Interior, Geophysical Monograph (2020)
  • Author(s): Takahashi, S., Ohtani, E., Sakai, T., Kamada, S., Ozawa, S., Sakamaki, T., Miyahara, M., Ito, Y., Hirao, N., Ohishi, Y.
  • Total Pages: 356
  • Publisher: John Wiley & Sons, Inc.
  • ISBN: 9781119508229
• [Book] Structure and propertiers of silicate magmas (2018)
  • Author(s): Tatsuya Sakamaki
  • Total Pages: 19
  • Publisher: Elsevier
  • ISBN: 9780128113011