The influence of variable thermal conductivity on Mercury's thermal evolution

Details The influence of variable thermal conductivity on Mercury's thermal evolution The influence of variable thermal conductivity on Mercury's thermal evolution

Oct 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011epsc.conf..935t&link_type=abstract

EPSC-DPS Joint Meeting 2011, held 2-7 October 2011 in Nantes, France. http://meetings.copernicus.org/epsc-dps2011, p.935

Computer Science

Scientific paper

After MESSENGER's three flybys, clear evidence has emerged of a widerspread presence of pyroclastic deposits on Mercury's surface, which indicates the presence of volatiles in the interior and a prolonged volcanic activity and crustal production. Considering a composition that allows for the presence of volatiles, we show numerical simulations of mantle convection, focusing on the influence of variable thermal conductivity on the planet's thermal evolution. Our results indicate that if a primordial crust enriched in radioactive elements and with a low thermal conductivity is taken into account, the production of secondary crust due to partial melt can last longer than 1 Byr, or even more if an essentially insulating thin megaregolith layer covering the planet's surface is considered.

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