title: Viking orbital colorimetric images of Mars: preliminary results.
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.
authors.forename: L A
authors.initials: LA
authors.lastname: Soderblom