热带海气耦合波动力学性质研究
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摘要: 本文利用简单海气耦合模式研究了热带大气和海洋不同波动之间的相互作用产生的耦合波及其稳定性等动力学性质,指出热带耦合系统中分别存在一类稳定的和不稳定的海气相互作用模态,其中不稳定模态的传播依赖于扰动的纬向尺度,即5000~10000km扰动表现为不稳定东传,大于此尺度的扰动发生不稳定西传,理论得出的缓慢不稳定东传波和观测事实甚为一致.最后本文指出热带海气耦合不稳定产生的基本条件是一种介质中的Kelvin波和另一种介质中的Rossby波的相互作用.
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