Generation of Solitary Rossby Waves by Unstable Topography

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 for...

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Published inCommunications in theoretical physics Vol. 57; no. 3; pp. 473 - 476
Main Authors Yang, Hong-Wei, Yin, Bao-Shu, Dong, Huan-He, Ma, Zhen-Dong
Format Journal Article
LanguageEnglish
Published 01.03.2012
Subjects
Amplitudes
Evolution
Mathematical analysis
mKdV方程
Rossby波
Theoretical physics
Topography
Vorticity equations
Waterfalls
Wave generation
不稳定
地形影响
孤立
展开方法
时间变量
海浪发电
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Summary: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.
Bibliography: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.
11-2592/O3
solitary Rossby waves, unstable topography, pseudo-spectral method, waterfall plot
ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0253-6102
DOI:10.1088/0253-6102/57/3/21