Computer Science
Scientific paper
Jan 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995icar..113..220b&link_type=abstract
Icarus (ISSN 0019-1035), vol. 113, no. 1, p. 220-225
Computer Science
58
Heat Transmission, Io, Lava, Planetary Composition, Volcanoes, Albedo, Infrared Radiation, Models, Spectral Emission, Voyager Project
Scientific paper
We model an infrared outburst on Io as being due to a large, erupting lava flow which increased its area at a rate of 1.5 x 105/sq m and cooled from 1225 to 555 K over the 2.583-hr period of observation. The inferred effusion rate of 3 x 105 cu m/sec for this eruption is very high, but is not unprece- dented on the Earth and is similar to the high eruption rates suggested for early lunar volcanism. Eruptions occur approxi- mately 6% of the time on Io. These eruptions provide ample resurfacing to explain Io's lack of impact craters. We suggest that the large total radiometric heat flow, 1014 W, and the size and temperature distribution of the thermal anomalies (McEwen et al. 1992; Veeder et al. 1994) can be accounted for by a series of silicate lava flows in various stages of cooling. We propose that the whole suite of Io's currently observed thermal anomalies was produced by multiple, high-eruptive-rate silicate flows within the past century.
Blaney Diana L.
Johnson Torrence V.
Matson Dennis L.
Veeder Glenn J. Jr.
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