| Budget Amount *help |
¥17,160,000 (Direct Cost: ¥13,200,000、Indirect Cost: ¥3,960,000)
Fiscal Year 2018: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2017: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2016: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2015: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
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| Outline of Final Research Achievements |
We investigated global dynamics of the radiation belt by coupling the global magnetohydrodynamics simulation and drift advection simulation. An interplanetary shock results in compression in the inner magnetosphere, resulting in drift phase bunching. Linear growth rate of whistler waves did not increase largely. When the interplanetary magnetic field turns southward, the convection electric field increases and substorms takes place frequently. We showed that injected hot electrons result in an increase in the whistler mode waves due to linear mechanisms first, followed by nonlinear growth. These results indicate the importance of nonlinear wave-particle interaction and nondiffusive particle transport.
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