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Degree-One Mantle Convection

A purely internally heated planetary mantle with strongly temperature dependant viscosity is forming a so-called degree-one convection, a possible origin of the dichotomy of mars. You see a volume rendering with streamlines in a sliced spherical shell (cold is more transparent than hot). Details: - Inner/outer radius ratio: 0.55 - Surface Rayleigh: 10000 - Gamma: 90 - Bottom insulated - Free slip (surface and bottom) - Cold random start - Calculated on 128 CPUs at the supercomputing center in Juelich

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