Articles

One Mars Year: Viking Lander Imaging Observations

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Science  25 May 1979:
Vol. 204, Issue 4395, pp. 799-806
DOI: 10.1126/science.204.4395.799

Abstract

Throughout the complete Mars year during which they have been on the planet, the imaging systems aboard the two Viking landers have documented a variety of surface changes. Surface condensates, consisting of both solid H2O and CO2, formed at the Viking 2 lander site during the winter. Additional observations suggest that surface erosion rates due to dust redistribution may be substantially less than those predicted on the basis of pre-Viking observations. The Viking 1 lander will continue to acquire and transmit a predetermined sequence of imaging and meteorology data as long as it is operative.

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