The generation of magnetic field on the Sun is caused by a dynamo mechanism, and is related with the differential rotation of the solar interior. Helioseismologic observations show that strong velocity gradients concentrate in a thin layer located at the base of the convective region, known as the t
A nonlinear model of the solar dynamo
β Scribed by R. L. Jennings
- Publisher
- Springer
- Year
- 1993
- Tongue
- English
- Weight
- 822 KB
- Volume
- 143
- Category
- Article
- ISSN
- 0038-0938
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π SIMILAR VOLUMES
The basic features of the solar activity mechanism are explained in terms of the dynamo theory of mean magnetic fields. The field generation sources are the differential rotation and the mean helicity of turbulent motions in the convective zone. A nonlinear effect of the magnetic field upon the mean
A fully self-consistent nonlinear dynamo is studied in the limit of the low kinetic Reynolds number by adopting a simplified statistical model. Governing equations for the evolution of a mean magnetic field and correlation functions of fluctuating magnetic fields are derived for arbitrary values of
We consider dynamically consistent mean-field dynamos in a spherical shell of incompressible fluid. The generation of magnetic field and differential rotation is parameterized by the ~-and A-effects, respectively. Extending previous investigations, we include now the eases of moderate and rapid rota