The plumes of IO: A detection of solid sulfur dioxide particles

Details The plumes of IO: A detection of solid sulfur dioxide particles The plumes of IO: A detection of solid sulfur dioxide particles

Feb 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984stin...8422523h&link_type=abstract

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Astronomy and Astrophysics

Astronomy

Emission Spectra, Infrared Astronomy, Infrared Spectrometers, Io, Plumes, Spectrum Analysis, Sulfur Dioxides, Volcanology, Broadband, Eclipses, Particle Density (Concentration), Voyager 1 Spacecraft

Scientific paper

Spectra of Io obtained during eclipse show a narrow deep absorption feature at 4.871 microns, the wavelength of the Nu1 + Nu3 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.

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