Shallow water models for stratified equatorial flows

Anna Geyer; Ronald Quirchmayr

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arXiv · 1810.11450

Shallow water models for stratified equatorial flows

Anna Geyer·Ronald Quirchmayr

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Abstract

Our aim is to study the effect of a continuous prescribed density variation on the propagation of ocean waves. More precisely, we derive KdV-type shallow water model equations for unidirectional flows along the Equator from the full governing equations by taking into account a prescribed but arbitrary depth-dependent density distribution. In contrast to the case of constant density, we obtain for each fixed water depth a different model equation for the horizontal component of the velocity field. We derive explicit formulas for traveling wave solutions of these model equations and perform a detailed analysis of the effect of a given density distribution on the depth-structure of the corresponding traveling waves.

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Anna Geyer, Ronald Quirchmayr. 2018-10-25. Shallow water models for stratified equatorial flows. https://arxiv.org/abs/1810.11450

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