Tatsuya Sakamaki
Commendation
Structure and physical properties of materials in the Earth and planetary interiors based on high-pressure experimental petrology
A list of five major papers
- T Sakamaki, E Ohtani, High pressure melts, Reviews in Mineralogy and Geochemistry 87 (1), 557-574, (2022)
- T Sakamaki, Density of hydrous magma, Chemical Geology 475, 135-139, (2017)
- T Sakamaki , E Ohtani, H Fukui, S Kamada, S Takahashi, T Sakairi, A Takahata, T Sakai, S Tsutsui, D Ishikawa, R Shiraishi, Y Seto, T Tsuchiya, AQR Baron, Constraints on Earth’s inner core composition inferred from measurements of the sound velocity of hcp iron in extreme conditions, Science Advances 2 (2), e1500802, (2016)
- T Sakamaki, A Suzuki, E Ohtani, H Terasaki, S Urakawa, Y Katayama, K Funakoshi, Y Wang, JW Hernlund, MD Ballmer, Ponded melt at the boundary between the lithosphere and asthe nosphere, Nature Geoscience 6 (12), 1041-1044, (2013)
- T Sakamaki, E Ohtani, Stability of hydrous melt at the base of the Earth’s upper mantle, Nature 439 (7073), 192-194, (2006)
Major achievements
Dr. Tatsuya Sakamaki has made significant contributions to our understanding of the evolution and deep dynamics of the Earth and planets by determining the structure, density, viscosity, and elastic wave velocity of Earth’s interior materials, particularly silicate magmas, through high-temperature and high-pressure experiments. Notably, he experimentally elucidated the gravitational stability of magma in the upper mantle to the mantle transition zone and explained the seismologically observed low-velocity regions and discontinuities in the Earth’s surface through the contribution of magma. Furthermore, he expanded his research by incorporating pulsed neutron beams as a research tool to investigate the effects of water on the structure and physical properties of melts. His research scope has extended beyond the structure and physical properties of melts and glasses to include a wide range of materials in the Earth’s interior, such as metallic iron, achieving remarkable results. For example, through sound velocity measurements of hexagonal close-packed (hcp) iron under inner core conditions, he succeeded in placing important constraints on the chemical composition of the Earth’s core. Additionally, Dr. Sakamaki summarized his research on magma density measurements in a monograph, which he published as a review paper, and his work has been highly regarded internationally.
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Recommender
Eiji Ohtani
Supporters
Bjorn O. Mysen, Yoshio Kono