The Chemical Composition of the Atmosphere of Venus

Vinogradov, A. P.; Surkov, Yu. A.; Andreichikov, B. M.; Kalinkina, O. M.; Grechischeva, I. M.

doi:10.1007/978-94-010-3063-2_1

Cited by 11 publications

(3 citation statements)

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“…The temperature and total pressure at the planetary surface correspond to Marov's model [Marov, 1972]. The carbon dioxide partial pressure is taken from Venera 4, 5, and 6 measurements [Vinogradov et al, 1970] as 96.1 atm (Xco 2 = 0.97); partial pressures of H20, CO, SO2, HC1, and HF were used from different direct measurements; the lower partial pressure limits of PH2O, Pso:, PHC•, and PHF were estimated in terms of certain buffering mineral assemblages stable in the surface rocks (Table 1).…”

Section: The Missing Ratios Of Sulfur-bearing Gases Inmentioning

confidence: 98%

“…It is suggested that the multisystem is open with respect to the volatiles H20, CO2, CO, SO2, H C1, and HF. The carbon dioxide partial pressure is taken from Venera 4, 5, and 6 measurements [Vinogradov et al, 1970] as 96.1 atm (Xco 2 = 0.97); partial pressures of H20, CO, SO2, HC1, and HF were used from different direct measurements; the lower partial pressure limits of PH2O, Pso:, PHC•, and PHF were estimated in terms of certain buffering mineral assemblages stable in the surface rocks (Table 1). The carbon dioxide partial pressure is taken from Venera 4, 5, and 6 measurements [Vinogradov et al, 1970] as 96.1 atm (Xco 2 = 0.97); partial pressures of H20, CO, SO2, HC1, and HF were used from different direct measurements; the lower partial pressure limits of PH2O, Pso:, PHC•, and PHF were estimated in terms of certain buffering mineral assemblages stable in the surface rocks (Table 1).…”

Section: The Missing Ratios Of Sulfur-bearing Gases Inmentioning

confidence: 99%

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The crust of Venus: Theoretical models of chemical and mineral composition

Barsukov¹,

Volkov²,

Khodakovsky³

1982

J. Geophys. Res.

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Physico‐chemical modeling of the atmospheric‐lithospheric interaction on Venus is presented. The thermodynamic assessment is carried out in terms of Venera 11 and 12 and Pioneer Venus measurements and the dynamic atmospheric structure. The subcloud atmosphere is interpreted to be a zone of nonequilibrium chemical conditions while the near‐surface layer is presumed to be an equilibrium zone due to catalytic effects and low wind velocities. The mineral assemblages of the ‘weathering crust’ are calculated. The pyrite‐anhydrite‐magnetite assemblage is suggested as the buffering system resulting in reducing conditions (P02≈ 10−21 atm). The existence of hydration is problematic and is thermodynamically conceivable only for the sulfur enrichment of primary rocks (about 2 wt. %). The carbonate minerals are suggested to be unstable.

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Section: The Missing Ratios Of Sulfur-bearing Gases Inmentioning

confidence: 98%

Section: The Missing Ratios Of Sulfur-bearing Gases Inmentioning

confidence: 99%

The crust of Venus: Theoretical models of chemical and mineral composition

Barsukov¹,

Volkov²,

Khodakovsky³

1982

J. Geophys. Res.

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“…In recent years several models for the atmosphere of Venus above the cloud layer have been proposed (see Samuelson, 1968, for a review). The direct, in situ, measure ment of the temperature, pressure, and chemistry by the Venera probes (Avduevsky et al, 1968, Vinogradov et al, 1970 and the temperature-pressure measurements made by Mariner 5 (Kliore et al, 1967) have greatly increased the knowledge of this part of the atmosphere of Venus. Unfortunately the only data bearing on the variation of opacity in the upper atmosphere comes from limb darkening measurements which with one exception have been made from the earth.…”

Section: Introductionmentioning

confidence: 99%