INTERACTION OF TOPOGRAPHY WITH SOLITARY ROSSBY WAVES IN A NEAR-RESONANT FLOW

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  • An inhomogeneous KdV equation including topographic forcing is derived by using perturbation expansions and stretching transforms of time and space.The generation of forced solitary Rossby waves by topography in a near-resonant flow and their interactions with free solitary waves are discussed,and some interesting results are obtained.The numerical results show that the topography has obvious effect on enhancing the amplitude of disturbances,and it may explain to some degree the formation of blocking by localized topography.
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