Constraints of hydrogen positions in nominally anhydrous mantle minerals and implication for their rheological properties
Project/Area Number |
18H01314
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Research Category |
Grant-in-Aid for Scientific Research (B)
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Allocation Type | Single-year Grants |
Section | 一般 |
Review Section |
Basic Section 17040:Solid earth sciences-related
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Research Institution | Okayama University |
Principal Investigator |
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Co-Investigator(Kenkyū-buntansha) |
山崎 大輔 岡山大学, 惑星物質研究所, 准教授 (90346693)
芳野 極 岡山大学, 惑星物質研究所, 教授 (30423338)
米田 明 岡山大学, 惑星物質研究所, 客員研究員 (10262841)
|
Project Period (FY) |
2018-04-01 – 2022-03-31
|
Project Status |
Completed (Fiscal Year 2021)
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Budget Amount *help |
¥17,290,000 (Direct Cost: ¥13,300,000、Indirect Cost: ¥3,990,000)
Fiscal Year 2021: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2020: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2019: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2018: ¥6,760,000 (Direct Cost: ¥5,200,000、Indirect Cost: ¥1,560,000)
|
Keywords | マントル鉱物 / 水素位置 / 単結晶 / FTIR / レオロジー / 相対粘性率 / マントル無水鉱物 |
Outline of Final Research Achievements |
Water can incorporate into nominally anhydrous mantle minerals and is considered to affect rheological properties of mantle minerals. However, mechanism, by which water affects rehology, was unknown. In this study, in-situ IR measurements were performed to identify hydrogen positions in mantle minerals in order to understand the mechanisms of effect of water. In addition, rheological measurements of mantle minerals were performed under dry conditions, which is the basis for understanding the effects of water on rheology.
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Academic Significance and Societal Importance of the Research Achievements |
地球は地表に大量の水を湛えているだけではなく、実際には地球内部にも大量に存在し、循環していると考えられている。この水はマントル物質とともにただ循環するだけではなく、地球内部の対流様式にも大きな影響を与えていると考えられている。本研究は、その水の影響を鉱物学的観点から制約を与えるものであり、地球内部進化にとどまらず、今後、地球表層の火山や地震活動を予測するための基礎データとなる。
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Report
(5 results)
Research Products
(33 results)
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[Journal Article] Exploration of the best reference material on anelastic measurement by cyclic loading under high pressure2022
Author(s)
Chao Liu, Takashi Yoshino, Daisuke Yamazaki, Noriyoshi Tsujino, Hitoshi Gomi, Moe Sakurai, Youyue Zhang, Ran Wang, Longli Guan, Kayan Lau, Yoshinori Tange, Yuji Higo
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Journal Title
High Pressure Research
Volume: 42
Issue: 1
Pages: 14-28
DOI
Related Report
Peer Reviewed / Int'l Joint Research
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[Journal Article] High-pressure generation in the Kawai-type multianvil apparatus equipped with tungsten-carbide anvils and sintered-diamond anvils, and X-ray observation on CaSnO3 and (Mg,Fe)SiO32019
Author(s)
D. Yamazaki, E. Ito, T. Yoshino, N. Tsujino, A. Yoneda, H. Gomi, J. Vazhakuttiyakam, M. Sakurai, Y. Zhang, Y. Higo, Y. Tange
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Journal Title
Comptes Rendus Geoscience
Volume: 351
Issue: 2-3
Pages: 253-253
DOI
Related Report
Peer Reviewed / Open Access
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[Journal Article] Complete agreement of the post-spinel transition with the 660-km seismic discontinuity2018
Author(s)
T. Ishii, R. Huang, H. Fei, I. Koemets, Z. Liu, F. Maeda, L. Yuan, L. Wang, D. Druzhbin, T. Yamamoto, S. Bhat, R. Farla, T. Kawazoe, N. Tsujino, E. Kulik, Y. Higo, Y. Tange, T. Katsura
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Journal Title
Scientific Reports
Volume: 8
Issue: 1
Pages: 6358-6358
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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