Computer Science
Scientific paper
May 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985icar...62..221k&link_type=abstract
Icarus (ISSN 0019-1035), vol. 62, May 1985, p. 221-229.
Computer Science
19
Atmospheric Moisture, Venus Atmosphere, Water Injection, Fractionation, Hydrogen, Outgassing, Solar Flux, Sulfuric Acid, Venus, Atmosphere, Injection, Water, Hydrogen, Mixing, Element Ratios, Escape, Deuterium, Homopause, Fractionation, Thermosphere, Radiation, Vapor, Ultraviolet, Calculations, Sulfuric Acid, Saturation, Outgassing
Scientific paper
Kasting and Pollack (1983) and Kumar et al. (1983) have conducted studies of the Venus thermospheric and ionospheric structure and composition. Attention is given to calculations of hydrogen loss caused primarily by a nonthermal escape produced by a H(+)-H charge exchange. The two investigations prove that the initial amount of water on Venus was of the order of a terrestrial ocean. The loss of this water during a comparatively short period of time is explained on the basis of the hydrodynamic flow. The present investigation is concerned with a quantitative analysis of hydrogen loss for certain assumptions made in the earlier studies, taking into account also revisions of the results obtained by Kumar et al. (1983). Attention is given to the sulfuric acid trap, the supersaturation of water vapor at the cold trap, nonthermal hydrogen escape at enhanced solar EUV fluxes, and the effect of long-term continuous outgassing.
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