Transport of Toroidal Magnetic Field by the Meridional Flow at the Base of the Solar Convection Zone

In this paper we discuss the transport of toroidal magnetic field by a weakmeridional flow at the base of the convection zone. We utilize the differentialrotation and meridional flow model developed by Rempel and incorporate feedbackof a purely toroidal magnetic field in two ways: directly through the Lorentzforce (magnetic tension) and indirectly through quenching of the turbulentviscosity, which affects the parametrized turbulent angular momentum transportin the model. In the case of direct Lorentz force feedback we find that ameridional flow with an amplitude of around 2 m/s can transport a magneticfield with a strength of 20 to 30 kG. Quenching of turbulent viscosity leads todeflection of the meridional flow from the magnetized region and a significantreduction of the transport velocity if the magnetic field is aboveequipartition strength.Comment: 8 pages, 6 figure