Computer Science
Scientific paper
Mar 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993lpi....24.1367s&link_type=abstract
In Lunar and Planetary Inst., Twenty-Fourth Lunar and Planetary Science Conference. Part 3: N-Z p 1367-1368 (SEE N94-20636 05-91
Computer Science
Carbon Dioxide, Emissivity, Planetary Mapping, Pyrites, Reflectance, Sulfides, Venus (Planet), Venus Atmosphere, Weathering, Gas Composition, Magellan Project (Nasa), Pioneer Venus Spacecraft, Radar Maps, Thermodynamics
Scientific paper
The stability of pyrite has become the focal point of study, since regions of low radio thermal emissivity were detected during the Pioneer Venus and Magellan radar mapping missions of Venus. Thermodynamic calculations and experimental studies have been performed assuming CO2 is a major contributor to the weathering of sulfides, as CO2 is the major gas species in the Venusian atmosphere. The purpose of the present study, however, is to demonstrate that CO2 is a non-reactive gas and that a minor species, S2, is the most important gas in determining whether pyrite is stable in the high radar reflectivity regions.
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