North polar region of Mars - Imaging results from Viking 2

Details North polar region of Mars - Imaging results from Viking 2 North polar region of Mars - Imaging results from Viking 2

Dec 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976sci...194.1329c&link_type=abstract

Science, vol. 194, Dec. 17, 1976, p. 1329-1337. NASA-supported research.

Mathematics

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32

Mars Photographs, Mars Surface, Polar Regions, Spaceborne Photography, Viking Lander 2, Climate Change, Climatology, High Resolution, Ice Mapping, Soil Erosion, Viking Mars Program

Scientific paper

During October 1976, the Viking 2 orbiter acquired approximately 700 high-resolution images of the north polar region of Mars. These images confirm the existence at the north pole of extensive layered deposits largely covered over with deposits of perennial ice. An unconformity within the layered deposits suggests a complex history of climate change during their time of deposition. A pole-girdling accumulation of dunes composed of very dark materials is revealed by the Viking cameras. The entire region is devoid of fresh impact craters. Rapid rates of erosion or deposition are implied. A scenario for polar geological evolution, involving two types of climate change, is proposed.

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