The atmospheric abundance of SO2 on Io

Details The atmospheric abundance of SO2 on Io The atmospheric abundance of SO2 on Io

Nov 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990icar...88....1b&link_type=abstract

Icarus (ISSN 0019-1035), vol. 88, Nov. 1990, p. 1-23.

Computer Science

25

Atmospheric Composition, Io, Satellite Atmospheres, Sulfur Dioxides, Abundance, Iue, Near Ultraviolet Radiation, Ultraviolet Spectra

Scientific paper

The IUE satellite has obtained near-UV spectra of Io with sufficient resolution to ascertain the east, or leading and west, or trailing hemispheres' dayside atmosphere SO2 abundance. The derived geometric albedos are compared with various model albedos that might result from proposed SO2 atmospheres, as well as from localized, sublimation- or volcanism-generated atmospheres. A homogeneous-layer alternative atmosphere is introduced whose upper limit on the average SO2 column density for both hemispheres implies that a collisionally thick SO2 atmosphere of intermediate density may have been present on Io's dayside during the present observations.

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