Affiliation:
1. Institut d'Astrophysique Spatiale, CNRS–Université Paris Sud, 91405 Orsay, France.
2. Laboratoire de Planétologie de Grenoble, CNRS–Université Joseph Fourier, 38400 Grenoble, France.
Abstract
The Observatoire pour la Minéralogie, l'Eau, les Glaces, et l'Activité (OMEGA) visible-infrared imaging spectrometer extensively observed regions of Mars with latitudes above 70°N in late 2004 (heliocentric longitude from L
s
93° to L
s
127°). The extent of water ice at the surface and the size of ice grains were monitored as a function of time. Bright, small-grained frost, which initially covered a large fraction of the polar cap, waned in favor of large-grained ice. In outlying regions, dominated by large-grained ice, the albedo increased over the period. Evaluating the dust content was model dependent. However, contamination of ice by dust was low.
Publisher
American Association for the Advancement of Science (AAAS)
Cited by
132 articles.
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