Reports

Viking Orbital Colorimetric Images of Mars: Preliminary Results

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Science  01 Oct 1976:
Vol. 194, Issue 4260, pp. 97-99
DOI: 10.1126/science.194.4260.97

Abstract

Color reconstruction and ratios of orbital images of Mars confirm Earth-based measurements showing red/violet ratios for bright areas to be roughly 1.5 times greater than dark areas. The new results show complex variation among dark materials; dark streaks emanating from craters in southern cratered terrains are much bluer than dark materials of the north equatorial plains on which Viking 1 landed.