Astronomy and Astrophysics – Astrophysics
Scientific paper
Mar 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991a%26a...243..483k&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 243, no. 2, March 1991, p. 483-491.
Astronomy and Astrophysics
Astrophysics
53
Magnetohydrodynamic Turbulence, Rotating Plasmas, Solar Cycles, Solar Magnetic Field, Dynamo Theory, Transport Properties, Turbulence Effects
Scientific paper
This paper discusses effects of turbulent transport of mean axisymmetric magnetic fields in inhomogeneous rotating fluids. Rotationally-induced anisotropy was shown to enable turbulence transporting toroidal and poloidal components of the field in different directions. Qualitative interpretations of the findings are suggested. For the Rossby numbers typical of deep layers of the solar convection zone, the poloidal field is transported towards the poles while toroidal field moves equatorwards. The vertical component of toroidal field transport changes its sign at a latitude about 30 deg, being directed downward at higher and upward at lower latitudes. Typical velocities and times of the field transports in the solar convection zone are estimated, and the possible role of the transport effects in the mean field dynamics over a solar cycle is discussed.
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