Thermal history of Mars and the sulfur content of its core

Details Thermal history of Mars and the sulfur content of its core Thermal history of Mars and the sulfur content of its core

Aug 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990jgr....9514095s&link_type=abstract

(American Geophysical Union and Geological Society of America, International Conference on Mars, 4th, Tucson, AZ, Jan. 10-13, 19

Mathematics

Logic

129

Astronomical Models, Mars (Planet), Planetary Mantles, Planetary Temperature, Sulfur, Heat Sources, Heat Transfer, Isotopes, Meteorites, Planetary Cores, Planetary Evolution, Viscosity

Scientific paper

A model for thermal evolution of the Martian mantle and core and for the evolution of the Martian magnetic field is developed by expanding the planetary thermal history model of Stevenson et al. (1983) and using the energy balance equations from that work. Several parameter values are chosen differently from those of the Stevenson model, including those for mantle density, core radius, core density, central pressure, and pressure at the core-mantle boundary. The model is further modified to allow calculations of lithosphere thickness through time. According to the model, the core contains a light alloying constituent, assumed to be sulfur. The results of calculations show that a small Martian magnetic field can be generated by a weakly convecting liquid core.

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