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Articles
Io: Evidence for Silicate Volcanism in 1986
1 Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109.
Infrared observations of Io during the 1986 apparition of Jupiter indicate that a large eruptive event occurred on the leading side of Io on 7 August 1986, Universal Time. Measurements made at 4.8, 8.7, and 20 micrometers suggest that the source of the event was about 15 kilometers in radius with a model temperature of Accepted on October 7, 1988
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900 Kelvin. Together with previously reported events, these measurements indicate that high-temperature volcanic activity on the leading side of Io may be more frequent than previously thought. The inferred temperature is significantly above the boiling point of sulfur in a vacuum(715 Kelvin) and thus constitutes strong evidence for active silicate volcanism on the surface of Io.
Science. ISSN 0036-8075 (print), 1095-9203 (online)
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