| Budget Amount *help |
¥44,070,000 (Direct Cost: ¥33,900,000、Indirect Cost: ¥10,170,000)
Fiscal Year 2021: ¥9,230,000 (Direct Cost: ¥7,100,000、Indirect Cost: ¥2,130,000)
Fiscal Year 2020: ¥9,230,000 (Direct Cost: ¥7,100,000、Indirect Cost: ¥2,130,000)
Fiscal Year 2019: ¥9,230,000 (Direct Cost: ¥7,100,000、Indirect Cost: ¥2,130,000)
Fiscal Year 2018: ¥16,380,000 (Direct Cost: ¥12,600,000、Indirect Cost: ¥3,780,000)
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| Outline of Final Research Achievements |
This study took on the challenge of elucidating water in the lower mantle using state-of-the-art high-pressure experiments, synchrotron radiation X-ray diffraction, neutron diffraction techniques, and analytical techniques. In particular, we focused on the study of "hydrous bridgmanite," a stable high-pressure hydrous phase widely existed in the Earth's deep interior, to elucidate the transport of water into the lower mantle and its storage capacity. As a result, the importance of substitution of Al in deep Earth minerals was clarified, and the substitution mechanism strongly depends on the crystal structure (coordination number) of deep Earth minerals.
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