A close-up look at Io from Galileo's near-infrared mapping spectrometer

Rosaly Lopes-Gautier, S. Douté, W. D. Smythe, L. W. Kamp, R. W. Carlson, A. G. Davies, F. E. Leader, A. S. McEwen, P. E. Geissler, S. W. Kieffer, L. Keszthelyi, E. Barbinis, R. Mehlman, M. Segura, J. Shirley, L. A. Soderblom

Research output: Contribution to journalArticlepeer-review


Infrared spectral images of Jupiter's volcanic moon Io, acquired during the October and November 1999 and February 2000 flybys of the Galileo spacecraft, were used to study the thermal structure and sulfur dioxide distribution of active volcanoes. Loki Patera, the solar system's most powerful known volcano, exhibits large expanses of dark, cooling lava on its caldera floor. Prometheus, the site of long-lived plume activity, has two major areas of thermal emission, which support ideas of plume migration. Sulfur dioxide deposits were mapped at local scales and show a more complex relationship to surface colors than previously thought, indicating the presence of other sulfur compounds.

Original languageEnglish (US)
Pages (from-to)1201-1204
Number of pages4
Issue number5469
StatePublished - May 19 2000
Externally publishedYes

ASJC Scopus subject areas

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