A model of the atmospheric convection zone with a large increase of rotation velocity between its bottom and top
- 27 Downloads
A simple model of a slowly rotating stellar or planetary atmospheric convection zone is considered supposing that only growing convective perturbations contribute to the value of nonlinear azimuthal force maintaining the differential rotation of the zone. Besides, the angular velocity of rotation is assumed to be dependent only on the distance to the center. It turns out that in this model some resonance phenomenon is possible, due to which a structure can be formed with a large rotation velocity gradient. This is caused by the interaction of two different azimuthal forces, one being proportional to either the angular velocity or its derivatives, while the other being determined by some mean value of the same velocity. The latter force appears in consequence of different time-dependence of the perturbations in rotating versus nonrotating convective zones.
A hypothesis is put forward that fast rotation of the upper atmosphere of Venus is due to such resonance interaction.
KeywordsAtmosphere Convection Simple Model Angular Velocity Velocity Gradient
Unable to display preview. Download preview PDF.
- Burangulov, N. I., Zilitinkevich, S. S., Kerzhanovich, V. V., Monin, A. S., Rozhdestvenski, M. K., Safrai, A. S., Turikov, V. G., and Chalikov, D. V.: 1974,Dinamika Atmosfery Venery (Dynamics of Venus Atmosphere), Nauka, Leningrad.Google Scholar
- Durney, B. R.: 1981, in R. Dunn (ed.),Solar Instrumentation, Sacramento Peak Obs.Google Scholar
- Glatzmaier, G. A. and Gilman, P. A.: 1981,Astrophys. J. Suppl. Ser. 45, No. 2.Google Scholar
- Kuz'min, A. D. and Marov, M. Ya.: 1974,Fizika planeti Venera (Physics of Planet Venus), Nauka, Moscow.Google Scholar
- Monin, A. S.: 1980,UFN (Progress in Phys. Sci., U.S.S.R.) 132, 123.Google Scholar
- Rossow, W. B., Fels, S. B., and Stone, P. H.: 1980,J. Atmospheric Sci. 37, 250.Google Scholar
- Rüdiger, G.: 1980,Geophys. Astrophys. Fluid Dynamics 16, 239.Google Scholar
- Stone, P. H.: 1975,J. Atmospheric Sci. 32, 1005.Google Scholar
- Traub, W. A. and Carleton, N. P.: 1979,Astrophys. J. 227, 329.Google Scholar
- Vandakurov, Yu. V.: 1975a,Solar Phys. 40, 3.Google Scholar
- Vandakurov, Yu. V.: 1975b,Solar Phys. 45, 501.Google Scholar
- Vandakurov, Yu. V.: 1976,Konvektsiya na Solntse i 11-letni tsikl (Convection in the Sun and the 11-Year Circle), Nauka, Leningrad.Google Scholar
- Vandakurov, Yu. V.: 1978, in A. B. Severny (ed.),The Problems of the Magnetic Fields in the Cosmos, Crimea.Google Scholar
- Young, R. E. and Pollack, J. B.: 1977,J. Atmospheric Sci. 34, 1315.Google Scholar
- Young, R. E. and Pollack, J. B.: 1980,J. Atmospheric Sci. 37, 253.Google Scholar