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(2 + 1)-dimensional coupled model for envelope Rossby solitary waves and its solutions as well as chirp effect. (English) Zbl 1426.35200

Summary: Using the method of multiple scales and perturbation method, a set of coupled models describing the envelope Rossby solitary waves in \((2 + 1)\)-dimensional condition are obtained, also can be called coupled NLS (CNLS) equations. Following this, based on trial function method, the solutions of the NLS equation are deduced. Moreover, the modulation instability of coupled envelope Rossby waves is studied. We can find that the stable feature of coupled envelope Rossby waves is decided by the value of \(S\). Finally, learning from the concept of chirp in the optical soliton communication field, we study the chirp effect caused by nonlinearity and dispersion in the propagation of Rossby waves.

MSC:

35Q53 KdV equations (Korteweg-de Vries equations)
37K10 Completely integrable infinite-dimensional Hamiltonian and Lagrangian systems, integration methods, integrability tests, integrable hierarchies (KdV, KP, Toda, etc.)
35Q51 Soliton equations
76U65 Rossby waves
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