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The atmospheric abundance of SO2 on IoThe 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.
Document ID
19910031715
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Ballester, Gilda E.
(Johns Hopkins Univ. Baltimore, MD, United States)
Strobel, Darrell F.
(Johns Hopkins Univ. Baltimore, MD, United States)
Moos, H. Warren
(Johns Hopkins Univ. Baltimore, MD, United States)
Feldman, Paul D.
(Johns Hopkins University Baltimore, MD, United States)
Date Acquired
August 15, 2013
Publication Date
November 1, 1990
Publication Information
Publication: Icarus
Volume: 88
ISSN: 0019-1035
Subject Category
Lunar And Planetary Exploration
Accession Number
91A16338
Funding Number(s)
CONTRACT_GRANT: NSG-5393
Distribution Limits
Public
Copyright
Other

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