| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2012: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2011: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2010: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Research Abstract |
The excitation of intense turbulent mixing in the ocean is concentrated near the generation sites of internal gravity waves such as within the surface layers under atmospheric disturbances or over prominent topographic features interacting with barotropic tidal currents. In this study, we first carry out Large Eddy Simulation (LES) to investigate turbulent mixing processes in the surface ocean caused by strong wind forcing. The results of LES are used to evaluate the performance of existing turbulence parameterization models. Next, we carry out three-dimensional global numerical simulations of internal tidal waves generated over prominent topographic features, and estimate the global distribution of internal tidal energy conversion rate in the limit of zero grid spacing.
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