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The plumes of IO: A detection of solid sulfur dioxide particlesSpectra of Io obtained during eclipse show a narrow deep absorption feature at 4.871 microns, the wavelength of the Nu sub 1 + Nu sub 3 band of solid SO2. The 4 micron radiation comes from volcanic hot spots at a temperature too high for the existence of solid SO2. It is concluded that the spectral feature results from SO2 particles suspended in plumes above the hot spots. The derived abundance of approximately 0.0003 gm/sq cm may imply an SO2 solid-to-gas ratio of roughly one for the Loki plume, which would in turn suggest that it is driven by the SO2 rather than by sulfur.
Document ID
19840014455
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Howell, R. R. (Hawaii Univ. Honolulu, HI, United States)
Cruikshank, D. P. (Hawaii Univ. Honolulu, HI, United States)
Geballe, T. T. (Groningen Rijksuniversiteit)
Date Acquired
September 4, 2013
Publication Date
January 1, 1984
Subject Category
Lunar And Planetary Exploration
Report/Patent Number
NASA-CR-175414
NAS 1.26:175414
Accession Number
84N22523
Funding Number(s)
CONTRACT_GRANT: NGL-12-001-057
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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