| Co-Investigator(Kenkyū-buntansha) |
西原 遊 愛媛大学, 地球深部ダイナミクス研究センター, 准教授 (10397036)
平賀 岳彦 東京大学, 地震研究所, 准教授 (10444077)
太田 健二 東京工業大学, 理学院, 准教授 (20727218)
久保 友明 九州大学, 理学研究院, 教授 (40312540)
安東 淳一 広島大学, 理学研究科, 教授 (50291480)
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| Budget Amount *help |
¥152,360,000 (Direct Cost: ¥117,200,000、Indirect Cost: ¥35,160,000)
Fiscal Year 2019: ¥27,560,000 (Direct Cost: ¥21,200,000、Indirect Cost: ¥6,360,000)
Fiscal Year 2018: ¥27,560,000 (Direct Cost: ¥21,200,000、Indirect Cost: ¥6,360,000)
Fiscal Year 2017: ¥27,560,000 (Direct Cost: ¥21,200,000、Indirect Cost: ¥6,360,000)
Fiscal Year 2016: ¥55,380,000 (Direct Cost: ¥42,600,000、Indirect Cost: ¥12,780,000)
Fiscal Year 2015: ¥14,300,000 (Direct Cost: ¥11,000,000、Indirect Cost: ¥3,300,000)
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| Outline of Final Research Achievements |
From the viewpoint of heat and mass transport processes, we have promoted research on physical property measurement of deep earth materials. From the thermal conductivity measurement, only the temperature inhomogeneity inside the mantle due to mantle convection is the cause of regional difference of heat flow in CMB. Nuclear mantle interactions can produce negative anomalies in the W isotope ratio of oceanic island basalts. From the high-pressure deformation experiment, the lower mantle is about an order of magnitude stronger than the mantle transition layer. The deformation of the subducted slab is mainly due to the diffusion creep due to the phase transition and subsequent grain refinement, except for the marginal part of the retained slab where the selective orientation due to dislocation creep has developed. The anisotropy observed in the D "layer is formed by the selective orientation due to particle rotation, and the viscosity of the plume is higher than that of the slab.
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