地球内部の水-マントル遷移層は水のリザバーか?- [in Japanese] Water in the Earth's Interior-Is the mantle transition zone a water reservoir?- [in Japanese]
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H<SUB>2</SUB>O is an important volatile material in the Earth, and it affects the physical properties (e. g. density, elastic velocity, viscosity, rheobgical property, diffusion, electrical conductivity and melting temperature) of the Earth's materials. Recently, it has been darified that significant amounts of H<SUB>2</SUB>O can be accommodated in β and γ phases of olivine, which means that the mantle transition zone has the potential of being a water reservoir in the Earth. In this paper, I review the H<SUB>2</SUB>O contents, lattice parameters and elastic properties of hydrous β and γ phases, the effect of H<SUB>2</SUB>O on the phase transformation of olivine, and the possibilities of water transportation into the mantle transition zone are discussed on the basis of these experimental data.
- The Review of High Pressure Science and Technology
The Review of High Pressure Science and Technology 10(2), 124-133, 2000-05-20
The Japan Society of High Pressure Science and Technology