| Budget Amount *help |
¥19,370,000 (Direct Cost: ¥14,900,000、Indirect Cost: ¥4,470,000)
Fiscal Year 2011: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2010: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2009: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2008: ¥6,630,000 (Direct Cost: ¥5,100,000、Indirect Cost: ¥1,530,000)
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| Research Abstract |
Thermal convection in a rotating spherical shell, typical in earth and planetary sciences, is studied with an attention focused on its dependence on the angular velocities of the inner and the outer boundaries and on the temperature difference between the boundaries. The bifurcation diagram is obtained, where the zonal phase velocity of the convection pattern is found to change its direction, and its physical interpretation is given in terms of the vorticity dynamics and weakly nonlinear theory. Dynamical interaction between the boundaries and the fluid is also studied to find the differential rotation and chaotic behaviors of the boundaries.
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