Magnetostrophic Dynamos

Monday, 15 December 2014: 4:30 PM
Paul H Roberts, UCLA, Mathematics, Los Angeles, CA, United States
An MHD dynamo in which viscous friction does not operate is termed magnetostrophic. Such an MS dynamo should model the geodynamo more faithfully than present day numerical models. MS dynamo theory was initiated in 1953 by Bryan Taylor, but was not taken further until recently, when Cheng-Chin Wu and the present author created mean-field models driven by the alpha-effect. Since then these authors have been developing 3D buoyancy-driven MS models. Progress will be described in this presentation.