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contributor authorGross, S. H.
date accessioned2017-06-09T14:17:37Z
date available2017-06-09T14:17:37Z
date copyright1974/07/01
date issued1974
identifier issn0022-4928
identifier otherams-16608.pdf
identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4152410
description abstractThe stability of various atmospheres on Titan and the Galilean satellites are examined relative to escape. One method consists of the comparison of exospheric temperature and a blow-off temperature defined here for the various constituents. Another method consists of the evaluation of outflow based on a polytropic model. Hydrogen, methane, nitrogen and neon atmospheres are examined. It is found that the Jovian satellites require heavier gases if they are to have any but very tenuous atmospheres, since all constituents examined are unstable. Nitrogen is stable on Titan, but methane and neon are marginally stable. Hydrogen is extremely unstable as a major constituent. As a minor constituent it is rapidly lost from Titan's thermosphere and must be replenished by outgassing or dissociation of a hydrogen compound, if the presently observed hydrogen content on Titan is not a transient occurrence. The rate of loss may be limited by diffusion, but could be augmented by vertical convection.
publisherAmerican Meteorological Society
titleThe Atmospheres of Titan and the Galilean Satellites
typeJournal Paper
journal volume31
journal issue5
journal titleJournal of the Atmospheric Sciences
identifier doi10.1175/1520-0469(1974)031<1413:TAOTAT>2.0.CO;2
journal fristpage1413
journal lastpage1420
treeJournal of the Atmospheric Sciences:;1974:;Volume( 031 ):;issue: 005
contenttypeFulltext


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