Radar images of Mars

Details Radar images of Mars Radar images of Mars

Sep 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991sci...253.1508m&link_type=abstract

Science (ISSN 0036-8075), vol. 253, Sept. 27, 1991, p. 1508-1513.

Mathematics

Logic

92

Mars Surface, Radar Imagery, Very Large Array (Vla), Deep Space Network, Planetary Geology, Radar Echoes

Scientific paper

VLA radar-reflected flux-density mappings have yielded full disk images of Mars which reveal near-surface features, including a region in the Tharsis volcano area that displayed no echo to the very low level of the radar-system noise. This feature is interpreted as a deposit of dust or ash whose density is less than about 0.5 g/cu cm; it must be several meters thick, and may be much deeper. The most strongly reflecting geological feature was the south polar ice cap, which is interpretable as arising from nearly-pure CO2 or H2O ice, with less than 2 vol pct Martian dust. Only one anomalous reflecting feature was identified outside the Tharsis region.

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