摘要
The effect of topography on generation of the solitary Rossby waves is researched. Here, the topography, as a forcing for waves generation, is taken as a function of longitude variable x and time variable t, which is called unstable topography. With the help of a perturbation expansion method, a forced mKdv equation governing the evolution of amplitude of the solitary Rossby waves is derived from quasi-geostrophic vortieity equation and is solved by the pseudo-spectral method. Basing on the waterfall plots, the generational features of the solitary Rossby waves under the influence of unstable topography and stable topography are compared and some conclusions are obtained.
基金
Supported by National Sciences Key Foundation of China under Grant No. 41030855
National Natural Science Foundation of China under Grant Nos. 41106017 and 70971079
Natural Science Foundation of Jiangsu Province under Grant No. BK2011396
National Basic Research Program of China (973) Funded Project under Grant No. 2011CB201206
