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运用非线性方法与摄动法，讨论了当地形随时间缓变时Rossby波振幅的演变问题.从均值流体准地转涡度方程推导，得到Rossby波振幅演变满足带有强迫项的KdV方程的结论，而地形随时间的缓慢变化诱导了该方程的强迫项.
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关键词:
- 非线性Rossby波 /
- 带有强迫项的KdV方程 /
- 摄动法 /
- 缓变地形
Employing the weakly nonlinear method and perturbation method, the evolution ofthe amplitude of Rossby waves when the topography slowly changes is studied. AKdV equation with a forcing term governing this evolution is obtained from the quasi-geostrophic vorticity equation, and the forcing term is induced by the slowly changing topography.-
Keywords:
- nonlinear Rossby waves /
- KdV equation with forcing term /
- perturbation method /
- slowly changing topography
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