On the Connection Between Mean Field Dynamo Theory and Flux Tubes

摘要: Mean field dynamo theory deals with various mean quantities and does not directly throw any light on the question of existence flux tubes. We can, however, draw important conclusions about tubes in interior Sun by combining additional arguments insights gained from solar solutions. The polar magnetic is order 10 G, whereas toroidal at bottom convection zone has been estimated to be 100000 G. Simple order-of-magnitude estimates show that shear tachocline sufficient stretch a G radial into field. argue must get concentrated intermittent before it advected tachocline. estimate strengths filling factors these Stretching then expected produce highly configuration zone. meridional flow should able carry this equatorward, as suggested recently Nandy Choudhuri (2002). When tube rises region pre-existing poloidal surface, we point out picks up twist accordance observations current helicities surface.