A Formal Theory for Vortex Rossby Waves and Vortex Evolution

Details A Formal Theory for Vortex Rossby Waves and Vortex Evolution A Formal Theory for Vortex Rossby Waves and Vortex Evolution

Apr 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003gapfd..97..275m&link_type=abstract

Geophysical and Astrophysical Fluid Dynamics, vol. 97, Issue 4, p.275-309

Physics

Fluid Dynamics

16

Scientific paper

A formal theory is presented for the balanced evolution of a small-amplitude, small-scale wave field in the presence of an axisymmetric vortex initially in gradient-wind balance and the accompanying changes induced in the vortex by the azimuthally averaged wave fluxes. The theory is a multi-parameter, asymptotic perturbation expansion for the conservative, rotating, f-plane, shallow-water equations. It extends previous work on Rossby-wave dynamics in vortices and more generally provides a new perspective on wave/mean-flow interaction in finite Rossby-number regimes. Some illustrative solutions are presented for a perturbed vortex undergoing axisymmetrization.

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