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三层模式中的对称不稳定
The Symmetric Instability in Three Layer Model
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摘要: 用三层模式研究了对称不稳定。结果表明，当气层的厚度（扰动的垂直尺度）与扰动的水平尺度达到最佳配合时，有最大的对称不稳定增长率。而Ri数越小，出现最不稳定时所要求的气层厚度与扰动的水平尺度的比就越大。Abstract: The symmetric instability is studied by means of three layer model. The results show that there exist the greatest growing rate of the instable disturbance when the optimum coupling of air layer depth (i. e. the vertical scale of the disturbance) with its horizontal scale is obtained. However, the smaller Richardson number Ri is, the greater the ratio of the air layer depth to the horizontal scale of the most instable disturbance is
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