| Qiao Fangli. 1996. The mixing mechanism in the formation of ocean shear waves. Acta Oceanologica Sinica, (2):145－158 |
| The mixing mechanism in the formation of ocean shear waves |
| The mixing mechanism in the formation of ocean shear waves |
| Received:November 10, 1995 Revised:January 30, 1996 |
| DOI： |
| Key words:Ocean shear wave Lagrangian tracing mixing |
| 中文关键词: Ocean shear wave Lagrangian tracing mixing |
| 基金项目:The project was supported by the National Natural Science Foundation of China. |
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| Abstract: |
| Based on the quasi-geostrophic vorticity equation,the present paper simulates the water mixing process in the formation of ocean shear waves using large eddy simulation methods.From Lagrangian tracing,we study the ocean shear wave's changing from wave character to vortex character.The distance between tracer groups increases near the ocean shear wave area,and decreases between ocean shear waves.The tracers that are uniformally distributed in space do not retain the uniform character in the mixing process.The frequency shift of the perturbation waves is caused by their nonlinear interaction.The wave number ratio and phase lag of the initial perturbation waves effect the mixing process,but the results show tittle difference.The increase of the visrnsity coefficient will restrain the mixing process. |
| 中文摘要: |
| Based on the quasi-geostrophic vorticity equation,the present paper simulates the water mixing process in the formation of ocean shear waves using large eddy simulation methods.From Lagrangian tracing,we study the ocean shear wave's changing from wave character to vortex character.The distance between tracer groups increases near the ocean shear wave area,and decreases between ocean shear waves.The tracers that are uniformally distributed in space do not retain the uniform character in the mixing process.The frequency shift of the perturbation waves is caused by their nonlinear interaction.The wave number ratio and phase lag of the initial perturbation waves effect the mixing process,but the results show tittle difference.The increase of the visrnsity coefficient will restrain the mixing process. |
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