title: Io: evidence for silicate volcanism in 1986.
abstract: 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 approximately 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.
authors.forename: T V
authors.initials: TV
authors.lastname: Johnson
authors.forename: G J
authors.initials: GJ
authors.lastname: Veeder
authors.forename: D L
authors.initials: DL
authors.lastname: Matson
authors.forename: R H
authors.initials: RH
authors.lastname: Brown
authors.forename: R M
authors.initials: RM
authors.lastname: Nelson
authors.forename: D
authors.initials: D
authors.lastname: Morrison