Rossby soliton

Details Rossby soliton Rossby soliton

Apr 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981zhpmr..33..368a&link_type=abstract

(ZHETF Pis'ma v Redaktsiiu, vol. 33, Apr. 5, 1981, p. 368-372.) JETP Letters, vol. 33, Apr. 5, 1981, p. 351-355. Translation.

Computer Science

Anticyclones, Geostrophic Wind, Planetary Waves, Rossby Regimes, Solitary Waves, Vortices, Coriolis Effect, Jupiter Red Spot, Planetary Atmospheres, Rotating Fluids

Scientific paper

A Rossby soliton has been formed experimentally, verifying the theory upon which it was based (Petviashvili, 1980). The basic conclusions of the theory are reviewed: (1) the Rossby soliton is a geostrophic eddy (where the excess of the hydrostatic pressure is balanced by the Coriolis force, acting on the circular stream of particles around the eddy axis) in a shallow layer of rotating fluid whose depth is small compared with the dimensions of the eddy; (2) the soliton drifts in the latitude direction, opposite to the global rotation of the fluid. An expression is presented for the characteristic diameter of the Rossby soliton. Experimental results are presented, including eddy size, which remains approximately constant and is equal to 5-8 cm, and eddy lifetime, which amounts to 8-16 revolutions of the paraboloid, i.e., approximately 5-10 s. It is concluded that the ease with which the soliton is excited gives a basis for favoring the current theoretical model, according to which Jupiter's great red spot is considered to be a Rossby soliton.

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