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Mariner 9 television reconnaissance of Mars and its satellites: Preliminary results

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Mariner 9 television reconnaissance of Mars and its satellites: Preliminary results; 1972; Article; Journal; Science; Masursky, H.; Batson, R. M.; Mccauley, J. F.; Soderblom, L. A.; Wildey, R. L.; Carr, M. H.; Milton, D. J.; Wilhelms, D. E.; Smith, B. A.; Kirby, T. B.; Robinson, J. C.; Leovy, C. B.; Briggs, G. A.; Duxbury, T. C.; Acton, Jr. , C. H.; Murray, B. C.; Cutts, J. A.; Sharp, R. P.; Smith, S.; Leighton, R. B.; Sagan, C.; Veverka, J.; Noland, M.; Lederberg, J.; Levinthal, E.; Pollack, J. B.; Moore, Jr. , J. T.; Hartmann, W. K.; Shipley, E. N.; De Vaucouleurs, G.; Davies, M. E.

Summary

At orbit insertion on 14 November 1971 the Martian surface was largely obscured by a dust haze with an extinction optical depth that ranged from near unity in the south polar region to probably greater than 2 over most of the planet. The only features clearly visible were the south polar cap, one dark spot in Nix Olympica, and three dark spots in the Tharsis region. During the third week the atmosphere began to clear and surface visibility improved, but contrasts remained a fraction of their normal value. Each of the dark spots that apparently protrude through most of the dust-filled atmosphere has a crater or crater complex in its center. The craters are rimless and have featureless floors that, in the crater complexes, are at different [...]

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Type Scheme Key
local-index unknown 70010114
local-pk unknown 70010114
series unknown Science

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citationTypeArticle
journalScience
languageEnglish
parts
typevolume
value175
typeissue
value4019

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