Mobility of water ice on Callisto - Evidence and implications

Details Mobility of water ice on Callisto - Evidence and implications Mobility of water ice on Callisto - Evidence and implications

Dec 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984georl..11.1223s&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 11, Dec. 1984, p. 1223-1226.

Physics

10

Callisto, Ice, Satellite Surfaces, Water, Albedo, Ganymede, Insolation, Migration, Sublimation, Surface Temperature, Voyager 1 Spacecraft

Scientific paper

Voyager images of Callisto reveal evidence for the accumulation of a bright volatile, presumably water ice, on north-facing slopes in the north polar region. The geometry of these accumulations suggests that ice migration in Callistoan high latitudes is dominated by thermal sublimation, controlled by insolation-dependent surface temperature contrasts. Such sublimation-dominated migration may result in the cold-trapping of most of the surface ice in discrete high-albedo regions.

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