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- DI41A-0012: Role of Pressure- and Temperature-Dependent Viscosity and Thermal Diffusivity in Magma Ocean Convection
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Board 0012‚ Hall EFG (Poster Hall)NOLA CC
Author(s):Generic 'disconnected' Message
Gabriele Morra, University of Louisiana at Lafayette (First Author, Presenting Author)
Leila Honarbakhsh, University of Louisiana at Lafayette
Peter Mora, University of Louisiana at Lafayette
Bijaya Karki, Louisiana State University
Colin Jacson, Tulane University
The conditions of our and other rocky planets during their formation is still scarcely understood. It is known during the first about 100 million years planets were at least partially in a molten state, called 'magma ocean', due to energy of the impact of the bodies that accreted to form the planet. While many models have been presented in the last years regarding the dynamics of this molten layer, precise estimates of their physical parameters at the extreme temperatures and pressure of the deep interiors have not been available until two years ago. We show here a survey of models of how the variation, in particular with depth, of the melt properties influences the dynamics of the magma ocean, using an innovative computational approach that was enables resolving details at an unprecedented level. Our results improve the physical realism compared to previous models and highlight how chemical elements redistributed during planetary formation, in particular the 'volatile' ones that form the planetary atmosphere.
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