| Budget Amount *help |
¥23,920,000 (Direct Cost: ¥18,400,000、Indirect Cost: ¥5,520,000)
Fiscal Year 2016: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2015: ¥12,350,000 (Direct Cost: ¥9,500,000、Indirect Cost: ¥2,850,000)
Fiscal Year 2014: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
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| Outline of Final Research Achievements |
Electrical and thermal conductivities are fundamental physical properties to know thermal structure and evolution of Earth's interior. However, there is few report regarding the conductivity measurements under the Earth's core conditions. The purpose of this study is to measure the electrical conductivity of iron-light element alloys that may consist of the Earth's core under very high pressures and temperatures, and to reveal electrical and thermal conductivity profile of the Earth. After some technical developments, we succeeded to measure the electrical conductivity of iron at the core conditions. In addition, we revealed the effect of sulfur and hydrogen incorporation on the conductivity of iron at high pressure and temperature conditions. The findings in this study will be a fundamental information to consider thermal structure and evolution of Earth and other terrestrial planets.
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