西原　遊　(にしはら　ゆう, Yu NISHIHARA)　　　　　　　　　　　　　　　English page



愛媛大学地球深部ダイナミクス研究センター
教授
電話: 089-927-8150, FAX: 089-927-8405
Eメール: nishihara.yu.mc＠ehime-u.ac.jp

学位: 博士（理学）（2003年3月東京工業大学）
所属学会: 日本地球惑星科学連合, 日本鉱物科学会, 日本高圧力学会, American Geophysical Union
受賞：2010年度日本高圧力学会奨励賞「マントル深部の流動特性と弾性の実験的研究」



研究内容

・地球深部物質の流動特性を通して固体地球の進化を探る
　マントル遷移層、下部マントルといった地球深部での物質の流動特性（粘性率、変形微細組織）を高温高圧変形実験によって解明することを通じて、
　マントルでの物質輸送が地球の進化に果たしている役割を探る
・地球深部物質の流動特性の物理化学的メカニズムを探る
　さまざまな物理化学的条件のもとで変形実験・粒成長実験・化学反応実験を行なうことによって、
　差応力、温度、圧力、含水量などが地球深部物質の流動特性に与える影響を理解する


略歴

1994年4月〜1998年3月 東京工業大学理学部（地球惑星科学科）
1994年4月〜1998年3月 東京工業大学大学院理工学研究科地球惑星科学専攻修士課程
2000年4月〜2003年3月 東京工業大学大学院理工学研究科地球惑星科学専攻博士課程・日本学術振興会特別研究員DC1
2003年4月〜2004年3月 Yale大学地質学地球物理学科ポスドク研究員
2004年4月〜2004年10月 日本学術振興会特別研究員PD （受け入れ機関：東京大学物性研究所）
2004年 11月〜2008年10月 東京工業大学大学院理工学研究科地球惑星科学専攻助手（21世紀COE）・助教（21世紀COE）
2008年 11月〜2013年3月 愛媛大学上級研究員センター上級研究員（講師）（地球深部ダイナミクス研究センター関連）
2013年 4月〜2020年9月 愛媛大学地球深部ダイナミクス研究センター准教授
2020年 10月〜 愛媛大学地球深部ダイナミクス研究センター教授


論文 （#は代表作）

68. 西原遊^*, 中田輝, 松影香子, 肥後祐司, 丹下慶範
熱電対起電力の圧力効果：マルチアンビル装置と放射光を用いた実験的研究,
高圧力の科学と技術 (2024) 34, 81-88.

67. Wentian Wu*, Yu Nishihara, and Noriyoshi Tsujino
Crystallographic preferred orientation of phase D at high pressure and temperature: implications for seismic anisotropy in the mid-mantle,
Journal of Geophysical Research: Solid Earth (2024) 129, e2024JB029734. https://doi.org/10.1029/2024JB029734

66. Yohan Park, Tatsuya Wakamatsu, Shintaro, Azuma, Yu Nishihara, and Kenji Ohta*
Characterization of the lattice preferred orientation of hcp iron transformed from the single‑crystal bcc phase in situ at high pressures up to 80 GPa,
Physics and Chemistry of Minerals (2024) 51, 31. https://doi.org/10.1007/s00269-024-01293-6

65. Goru Takaichi*, Yu Nishihara, Kyoko N. Matsukage, Masayuki Nishi, Yuji Higo, Yoshinori Tange, Noriyoshi Tsujino, and Sho Kakizawa
Limited stability of hydrous SiO₂ stishovite in the deep mantle,
Earth and Planetary Science Letters (2024) 640, 118790. https://doi.org/10.1016/j.epsl.2024.118790

64. Kyoko N. Matsukage*, Yu Nishihara, Yoshinori Tange, and Yuji Higo
Phase relation and equation of state of iron‐titanium oxyhydroxides with α‐PbO₂ type crystal structure at deep mantle conditions,
Journal of Geophysical Research: Solid Earth (2024) 129, e2023JB027906. https://doi.org/10.1029/2023JB027906

#63. Yu Nishihara*, Shunta Doi, Noriyoshi Tsujino, Daisuke Yamazaki, Kyoko N. Matsukage, Yumiko Tsubokawa, Takashi Yoshino, Andrew R. Thomson, Yuji Higo, and Yoshinori Tange
Rheology of hexagonal close-packed (hcp) iron,
Journal of Geophysical Research: Solid Earth (2023) 128, e2022JB026165. https://doi.org/10.1029/2022JB026165

62. Andrew R. Thomson*, Yu Nishihara, Daisuke Yamazaki, Noriyoshi Tsujino, Simon A. Hunt, Yumiko Tsubokawa, Kyoko N. Matsukage, Tomoaki Kubo, and David P. Dobson
Preliminary results from the new deformation multi-anvil press at the Photon Factory: insight into the creep strength of calcium silicate perovskite,
In: T. Nakagawa, M. Satish-Kumar, T. Tsuchiya (Eds.), Core-Mantle Coevolution: A Multidisciplinary Approach, American Geophysical Union (2023) pp. 59-73.

61. Yohan Park, Shintaro Azuma*, Keishi Okazaki, Kentaro Uesugi, Masahiro Yasutake, Yu Nishihara, and Ryuichi Nomura
Development of lattice-preferred orientations of MgO periclase from strain rate controlled shear deformation experiments under pressure up to 120 GPa,
Geophysical Research Letters (2022) 49, e2022GL100178. https://doi.org/10.1029/2022GL100178

60. Noriyoshi Tsujino*, Daisuke Yamazaki, Yu Nishihara, Takashi Yoshino, Yuji Higo, and Yoshinori Tange
Viscosity of bridgmanite determined by in situ stress and strain measurements in uniaxial deformation experiments,
Science Advances (2022) 8, doi: 10.1126/sciadv.abm1821.

59. Yoshiyuki Okuda*, Kenji Ohta, Yu Nishihara, Naohisa Hirao, Tatsuya Wakamatsu, Sho Suehiro, Saori I. Kawaguchi, and Yasuo Ohishi
Low-spin ferric iron in primordial bridgmanite crystallized from a magma ocean,
Scientific Reports (2021) 11, 19471.

58. 西原遊^*, 辻野典秀, 久保友明, 山崎大輔, 土居峻太, 今村公裕, 芳野極
D111型装置を用いた高圧変形実験による地球深部レオロジーの研究,
高圧力の科学と技術 (2020) 30, 78-84.

57. Yu Nishihara*, Shunta Doi, Hideitsu Hino, Yuji Higo, and Yoshinori Tange
Pressure effect on the electromotive force of the type R thermocouple,
High Pressure Research (2020) 40, 205-218.

#56. Yu Nishihara*, Shunta Doi, Sho Kakizawa, Yuji Higo, and Yoshinori Tange
Effect of pressure on temperature measurements using WRe thermocouple and its geophysical impact,
Physics of the Earth and Planetary Interiors (2020) 298, 106348.

55. Xingcheng Liu*, Kyoko N. Matsukage*, Yu Nishihara, Toshihiro Suzuki, and Eiichi Takahashi
Stability of hydrous phases of Al-rich phase D and Al-rich phase H in deep subducted oceanic crust,
American Mineralogist (2019) 104, 64-72.

54. Kenji Ohta*, Yu Nishihara, Yuki Satoh, Kei Hirose, Takashi Yagi, Saori I. Kawaguchi, Naohisa Hirao, and Yasuo Ohishi
An experimental examination of thermal conductivity anisotropy in hcp iron,
Frontiers in Earth Science (2018) 6, 176, 10.3389/feart.2018.00176.

#53. Yu Nishihara*, Tomohiro Ohuchi, Takaaki Kawazoe, Yusuke Seto, Genta Maruyama, Yuji Higo, Ken-ichi Funakoshi, Yoshinori Tange, and Tetsuo Irifune
Deformation-induced crystallographic-preferred orientation of hcp-iron: An experimental study using a deformation-DIA apparatus,
Earth and Planetary Science Letters (2018) 490, 151-160.

52. Kyoko N. Matsukage*, Mika Hashimoto, and Yu Nishihara
Morphological stability of hydrous liquid droplets at grain boundaries of eclogite minerals in the deep upper mantle,
Journal of Mineralogical and Petrological Sciences (2017) 112, 346-358.

51. Noriyoshi Tsujino*, Yu Nishihara, Daisuke Yamazaki, Yusuke Seto, Yuji Higo, and Eiichi Takahashi
Mantle dynamics inferred from the crystallographic preferred orientation of bridgmanite,
Nature (2016) 539, 81-84, doi:10.1038/nature19777.

50. Takaaki Kawazoe*, Yu Nishihara, Tomohiro Ohuchi, Nobuyoshi Miyajima, Genta Maruyama, Yuji Higo, Ken-ichi Funakoshi, and Tetsuo Irifune
Creep strength of ringwoodite measured at pressure-temperature conditions of the lower part of the mantle transition zone using a deformation-DIA apparatus,
Earth and Planetary Science Letters (2016) 454, 10-19.

49. Yu Nishihara*, Genta Maruyama, and Masayuki Nishi
Growth kinetics of forsterite reaction rims at high-pressure,
Physics of the Earth and Planetary Interiors (2016) 257, 220-229.

48. Yu Nishihara*, Kazuki Fuke, Yoshinori Tange, and Yuji Higo
Determination of pressure effect on thermocouple electromotive force using multi-anvil apparatus,
High Pressure Research (2016) 36, 121-139.

47. Yu Nishihara* and Kyoko N. Matsukage*
Iron-titanium oxyhydroxides as water carriers in the Earth’s deep mantle,
American Mineralogist (2016) 101, 919-927.

46. Tomohiro Ohuchi*, Yu Nishihara, Yusuke Seto, Takaaki Kawazoe, Masayuki Nishi, Genta Maruyama, Mika Hashimoto, Yuji Higo, Ken-ichi Funakoshi, Akio Suzuki, Takumi Kikegawa, and Tetsuo Irifune
In situ observation of crystallographic preferred orientation of deforming olivine at high pressure and high temperature,
Physics of the Earth and Planetary Interiors (2015) 243, 1-21.

45. Kyoko N. Matsukage*, Yu Nishihara, Fumiya Noritake, Katsuyuki Kawamura, Noriyoshi Tsujino, Moe Sakurai, Yuji Higo, Junichi Nakajima, Akira Hasegawa, and Eiichi Takahashi
Elastic wave velocity anomalies of anorthite in subducting plate: In situ experiments,
American Mineralogist (2015) 100, 1856-1865.

#44. Yu Nishihara*, Tomohiro Ohuchi, Takaaki Kawazoe, Dirk Spengler, Miki Tasaka, Takumi Kikegawa, Akio Suzuki, and Eiji Ohtani
Rheology of fine-grained forsterite aggregate at deep upper mantle conditions,
Journal of Geophysical Research: Solid Earth (2014) 119, doi:10.1002/2013JB010473.

43. Masayuki Nishi*, Tetsuo Irifune, Jun Tsuchiya, Yoshinori Tange, Yu Nishihara, Kiyoshi Fujino and Yuji Higo
Stability of hydrous silicate at high pressures and water transport to the deep lower mantle,
Nature Geoscience (2014) 7, 224-227, doi:10.1038/ngeo2074.

42. Masayuki Nishi*, Yu Nishihara, and Tetsuo Irifune
Growth kinetics of MgSiO₃ perovskite reaction rim between stishovite and periclase up to 50 GPa and its implication for grain boundary diffusivity in the lower mantle,
Earth and Planetary Science Letters (2013) 377-378, 191-198.

41. Noriyoshi Tsujino*, Yu Nishihara, Yoichi Nakajima, Eiichi Takahashi, Ken-ichi Funakoshi, and Yuji Higo
Equation of state of g-Fe: reference density for planetary cores,
Earth and Planetary Science Letters (2013) 375, 244-253.

40. Takaaki Kawazoe*, Tomohiro Ohuchi, Yu Nishihara, Norimasa Nishiyama, Kiyoshi Fujino, and Tetsuo Irifune
Seismic anisotropy in the mantel transition zone induced by shear deformation of wadsleyite,
Physics of the Earth and Planetary Interiors (2013) 216, 91-98.

39. Masayuki Nishi*, Tomoaki Kubo, Hiroaki Ohfuji, Takumi Kato, Yu Nishihara, and Tetsuo Irifune
Slow Si-Al interdiffusion in garnet and stagnation of subduing slabs,
Earth and Planetary Science Letters (2013) 361, 44-49.

38. Yu Nishihara*, Yoichi Nakajima, Akihiko Akashi, Noriyoshi Tsujino, Eiichi Takahashi, Ken-ichi Funakoshi, and Yuji Higo
Isothermal compression of face-centered cubic iron,
American Mineralogist (2012) 97, 1417-1420.

37. Tomohiro Ohuchi*, Yu Nishihara, Takaaki Kawazoe, Dirk Spengler, Rei Shiraishi, Akio Suzuki, Takumi Kikegawa, and Eiji Ohtani
Superplasticity in hydrous melt-bearing dunite: Implications for shear localization in Earth’s upper mantle,
Earth and Planetary Science Letters (2012) 335-336, 59-71.

36. Tomohiro Ohuchi*, Takaaki Kawazoe, Yu Nishihara, and Tetsuo Irifune
Change of olivine a-axis alignment induced by water: origin of seismic anisotropy in subduction zones,
Earth and Planetary Science Letters (2012) 317-318, 111-119.

35. Takaaki Kawazoe*, Yu Nishihara, Tomohiro Ohuchi, Norimasa Nishiyama, Yuji Higo, Ken-ichi Funakoshi, and Tetsuo Irifune
In situ stress-strain measurements in a deformation-DIA apparatus at P-T conditions of the upper part of the mantle transition zone,
American Mineralogist (2011) 96, 1665-1672.

34. 西原遊^*
高圧下でのマントル鉱物の流動特性,
高圧力の科学と技術 (2011) 21, 137-143.

33. Yoichi Nakajima*, Eiichi Takahashi, Nagayoshi Sata, Yu Nishihara, Kei Hirose, Ken-ichi Funakoshi, and Yasuo Ohishi
Thermoelastic property and high-pressure stability of Fe₇C₃: Implication for iron-carbide in the Earth’s core,
American Mineralogist (2011) 96, 1158-1165.

32. Tomohiro Ohuchi*, Takaaki Kawazoe, Yu Nishihara, Norimasa Nishiyama, and Tetsuo Irifune
High pressure and temperature fabric transitions in olivine and variations in upper mantle seismic anisotropy,
Earth and Planetary Science Letters (2011) 304, 55-63.

31. Takaaki Kawazoe*, Norimasa Nishiyama, Yu Nishihara, and Tetsuo Irifune
Deformation experiments at P-T conditions of the mantle transition zone using D-DIA,
Physics of the Earth and Planetary Interiors (2010) 183, 190-195.

30. Yu Nishihara*, Ken-ichi Funakoshi, Yuji Higo, Noriyoshi Tsujino, Takaaki Kawazoe, Tomoaki Kubo, Akira Shimojuku, Hidenori Terasaki, and Norimasa Nishiyama
Stress relaxation experiments of olivine under Earth's deep upper mantle conditions,
Physics of the Earth and Planetary Interiors (2010) 183, 164-174.

29. Takaaki Kawazoe*, Tomohiro Ohuchi, Norimasa Nishiyama, Yu Nishihara, and Tetsuo Irifune
Preliminary deformation experiment of ringwoodite at 20 GPa and 1700 K using a D-DIA apparatus,
Journal of Earth Science (2010) 21, 517-522.

28. Tomohiro Ohuchi*, Takaaki Kawazoe, Norimasa Nishiyama, Yu Nishihara, and Tetsuo Irifune
Technical development of simple shear deformation experiments using a deformation-DIA apparatus,
Journal of Earth Science (2010) 21, 523-531.

27. Kyoko N. Matsukage*, Seiichi Kikuchi, Shigeaki Ono, Yu Nishihara, and Takumi Kikegawa
Density and seismic velocities of chromitite body in oceanic mantle peridotite,
American Mineralogist (2010) 95, 1422-1428.

26. Noriyoshi Tsujino* and Yu Nishihara
Effect of pressure on grain-growth kinetics of ferropericlase to lower mantle conditions,
Geophysical Research Letters (2010) 37, doi:10.1029/2010GL043491.

25. Ken-ichi Funakoshi*, Yuji Higo, Yu Nishihara
High-pressure two-dimensional angle-dispersive x-ray diffraction measurement system using a Kawai-type multianvil press at SPring-8,
Journal of Physics: Conference Series (2010) 215, 012107.

24. Takaaki Kawazoe*, Norimasa Nishiyama, Yu Nishihara, and Tetsuo Irifune
Pressure generation to 25 GPa using a cubic anvil apparatus with a multi-anvil 6-6 assembly,
High Pressure Research (2010) 30, 167-174.

23. Yu Nishihara*, Ken-ichi Funakoshi, Yuji Higo, Hidenori Terasaki, Norimasa Nishiyama, Tomoaki Kubo, Akira Shimojuku, and Noriyoshi Tsujino
Stress measurement under high-pressure using Kawai-type multi-anvil apparatus combined with synchrotron radiation,
Journal of Synchrotron Radiation (2009) 16, 757-761.

22. Akihiko Akashi, Yu Nishihara^*, Eiichi Takahashi, Yoichi Nakajima, Yoshinori Tange, and Ken-ichi Funakoshi
Orthoenstatite/clinoenstatite phase transformation in MgSiO₃ at high-pressure and high-temperature determined by in-situ X-ray diffraction: Implications for nature of the X-discontinuity,
Journal of Geophysical Research (2009)114, doi:10.1029/2008JB005894.

21. Yoshinori Tange^*, Yu Nishihara, and Taku Tsuchiya
Unified analyses in P-V-T equation of state of MgO: a solution for pressure-scale problems in high P-T experiments,
Journal of Geophysical Research (2009) 114, 10.1029/2008JB005813.

20. Yoshinori Tange^*, Eiichi Takahashi, Yu Nishihara, Ken-ichi Funakoshi, and Nagayoshi Sata
Phase relations in the system MgO-FeO-SiO₂ to 50 GPa and 2000°C: an application of experimental techniques using multianvil apparatus with sintered diamond anvils,
Journal of Geophysical Research (2009) 114, doi:10.1029/2008JB005891.

19. Koichi Sakamaki, Eiichi Takahashi^*, Yoichi Nakajima, Yu Nishihara, Ken-ichi Funakoshi , Toshihiro Suzuki, and Yuh Fukai
Melting phase relation of FeH_x to 20 GPa: Implications on the temperature of the Earth’s core,
Physics of the Earth and Planetary Interiors (2009) 174, 192-201.

18. Noriyoshi Tsujino^* and Yu Nishihara
Grain-growth kinetics of ferropericlase at high-pressure,
Physics of the Earth and Planetary Interiors (2009) 174, 145-152.

17. 西原遊^*
高温高圧下の変形実験の最新技術,
高圧力の科学と技術 (2008) 18, 223-229.

16. Konstantin D. Litasov^*, Eiji Ohtani, Yu Nishihara, Akio Suzuki, and Ken-ichi Funakoshi
Thermal equation of state of Al- and Fe-bearing phase D,
Journal of Geophysical Research (2008) 113, doi:10.1029/2007JB004937.

#15. Yu Nishihara^*, David Tinker, Takaaki Kawazoe, Yousheng Xu, Zhicheng Jing, Kyoko N. Matsukage, and Shun-ichiro Karato
Plastic deformation of wadsleyite and olivine at high-pressure and high-temperature using a rotational Drickamer apparatus (RDA),
Physics of the Earth and Planetary Interiors (2008) 170, 156-169.

#14. Yu Nishihara^* , Toru Shinmei, and Shun-ichiro Karato
Effect of chemical environment on the hydrogen-related defect chemistry in wadsleyite,
American Mineralogist (2008) 93, 831-843.

13. Konstantin D. Litasov^*, Eiji Ohtani, Sujoy Ghosh, Yu Nishihara, Akio Suzuki, and Ken-ichi Funakoshi
Thermal equation of state of superhydrous phase B to 27 GPa and 1373 K,
Physics of the Earth and Planetary Interiors (2007) 164, 142-160.

12. Takashi Yoshino^*, Yu Nishihara, and Shun-ichiro Karato
Complete wetting of olivine grain boundaries by a hydrous melt near the mantle transition zone,
Earth and Planetary Science Letters (2007) 256, 466-472.

11. Azusa Shito^*, Shun-ichiro Karato, Kyoko N. Matsukage, and Yu Nishihara
Towards mapping the three-dimensional distribution of water in the upper mantle from velocity and attenuation tomography,
In: S.D. Jacobsen, S. van der Lee (Eds.), Earth’s Deep Water Cycle, Geophysical Monograph 168, American Geophysical Union (2006) pp. 225-236.

10. Yu Nishihara^*, Toru Shinmei, and Shun-ichiro Karato
Grain-growth kinetics in wadsleyite: Effects of chemical environment,
Physics of the Earth and Planetary Interiors (2006) 154, 30-43.

9. Yu Nishihara^*, Kyoko N. Matsukage, and Shun-ichiro Karato
Effects of metal protection coils on thermocouple EMF in multi-anvil high-pressure experiments,
American Mineralogist (2006) 91, 111-114.

8. Kyoko N. Matsukage^*, Yu Nishihara, and Shun-ichiro Karato
Seismological signature of chemical differentiation in the Earth’s upper mantle,
Journal of Geophysical Research (2005) 110, doi:10.1029/2004JB003328.

7. Yu Nishihara^*, Keisuke Nakayama, Eiichi Takahashi, Tomohiro Iguchi, and Ken-ichi Funakoshi
P-V-T equation of state of stishovite to the mantle transition zone conditions,
Physics and Chemistry of Minerals (2005) 31, 660-670.

6. Yousheng Xu^*, Yu Nishihara, and Shun-ichiro Karato
Development of a Drickamer apparatus for large-strain deformation experiments under Earth conditions,
In: J. Chen, Y. Wang, T. Duffy, G. Shen, L. Dobrzhinetskaya (Eds.), Advances in High-pressure Techniques for Geophysical Applications, Elsevier Science, Amsterdam (2005) pp. 167-182.

#5. Yu Nishihara^*, Ichiro Aoki, Eiichi Takahashi, Kyoko N. Matsukage, and Ken-ichi Funakoshi
Thermal equation of state of majorite with MORB composition,
Physics of the Earth and Planetary Interiors (2005) 148, 73-84.

4. Yu Nishihara^*, Eiichi Takahashi, Kyoko N. Matsukage, Tomohiro Iguchi, Keisuke Nakayama, and Ken-ichi Funakoshi
Thermal equation of state of (Mg_0.91Fe_0.09)₂SiO₄ ringwoodite,
Physics of the Earth and Planetary Interiors (2004) 143-144, 33-46.

3. Yu Nishihara^*, Eiichi Takahashi, Kyoko Matsukage, and Takumi Kikegawa
Thermal equation of state of omphacite,
American Mineralogist (2003) 88, 80-86.

2. Miki Shirasaka^*, Eiichi Takahashi, Yu Nishihara, Kyoko Matsukage, and Takumi Kikegawa
In situ X-ray observation of the reaction dolomite = aragonite + magnesite at 900-1300 K,
American Mineralogist (2002) 87, 922-930.

#1. Yu Nishihara^* and Eiichi Takahashi
Phase relation and physical properties of an Al-depleted komatiite to 23 GPa,
Earth and Planetary Science Letters (2001) 190, 65-77.

最終更新日：2024年11月22日