TY JOUR TI Structural Stability of Composite Vortices and Its Application to Jupiter's Great Red Spot KW Jupiter's Great Red Spot KW composite vortex KW quasi-geostrophic vortex KW non-stationary vortex KW potential vorticity JO Russian Journal of Earth Sciences AU Arakelyan, Y.M. AU Zhmur, V.V. AU Chkhetiani, O.G. PY IS 26 PB Geophysical Center of the Russian Academy of Sciences