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- Title
A new ZK–BO equation for three-dimensional algebraic Rossby solitary waves and its solution as well as fission property.
- Authors
Yang, Hong Wei; Chen, Xin; Guo, Min; Chen, Yao Deng
- Abstract
The BO equation depicts the evolution of algebraic Rossby solitary waves in ocean and atmosphere. But, despite its overt fame, the BO equation is restricted as a two-dimensional model. On the basis of the great success in the soliton theory, a lot of works have recently been directed to three-dimensional models and investigations of solitary waves properties in three-dimensional systems. In this paper, a new ZK–BO equation for three-dimensional algebraic Rossby solitary waves is derived by employing perturbation expansions and stretching transformations of time and space. By virtue of the trial function method, the exact solution of the ZK–BO equation is presented. By comparing the solution with the solution of two-dimensional algebraic Rossby solitary waves, we can find that the wave length of three-dimensional algebraic Rossby solitary waves is shorter while the wave amplitude is higher. Based on the exact solution of ZK–BO equation, the dissipation effect is studied. The results reveal the influence of dissipation effect on the three-dimensional algebraic solitary waves. Further, after theoretical analysis, the conservation laws of three-dimensional algebraic Rossby solitary waves are discussed and the fission property is studied.
- Subjects
ROSSBY waves; ENERGY dissipation; SOLITONS; PERTURBATION theory; MATHEMATICAL expansion
- Publication
Nonlinear Dynamics, 2018, Vol 91, Issue 3, p2019
- ISSN
0924-090X
- Publication type
Article
- DOI
10.1007/s11071-017-4000-5