Cyclostrophic vortices in polar regions of rotating planets

V. Goncharov (1) , V. Pavlov (2)

1 IAP - A.M.Obukhov Institute of Atmospheric Physics
2 UFR de Mathématiques Pures et Appliquées

Multi-petal, rotating vortices can form in two-dimensional flows consisting of an inviscid incompressible fluid under certain conditions. Such vortices are principally nonlinear thermo-hydrodynamical structures. The proper rotation of these structures which leads to time-dependent variations of the associated temperature field can be enregistred by a stationary observer. The problem is analyzed in the framework of the contour dynamics method (CDM). An analytical solution of the reduced equation for a contour curvature is found. We give a classification of the solutions and compare the obtained results with observational data.

Domaines: Cosmologie et astrophysique extra-galactique [astro-ph.CO]; Astrophysique [astro-ph]; Sciences de la Terre

V. Goncharov, V. Pavlov. Cyclostrophic vortices in polar regions of rotating planets. Nonlinear Processes in Geophysics, 2001, 8 (4/5), pp.301-311. ⟨hal-00331057⟩