地形作用下的非线性Rossby波

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Nonlinear Rossby Waves Forced by Topography

摘要: 本文利用一个受地形强迫作用的半地转正压模式讨论了非线性Rossby波的稳定度和解.结果发现,东西向地形和南北向地形对非线性Rossby波的稳定度和相速的影响很不相同.同时也发现,地形强迫下的非线性Rossby波可用著名的KdV方程描述.

Abstract: Using a barotropic semi-geostrophic model with topographic forcing the stability and solutions of the nonlinear Rossby waves are discussed.It is found that the effects of the W-E oriented topography and the N-S oriented topography on the stability and phase speed of the waves are quite different.It is also found that the nonlinear Rossby waves forced by the topography can be described by the well-known KdV equation.

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