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Analysis of condensates formed at the Viking 2 lander site - The first winterRelative surface albedo, spectral reflectance estimates and a limited photometric function are reduced from Viking 2 lander data obtained during a 249 Mars day period, in the lander's first year, when a light ground covering appeared on the surface. During the deposition, surface broadband albedo more than doubled and blue reflectance increased by a factor of 4.0. Comparison of lander data with earlier laboratory measurements of CO2 and H2O frosts and snows shows that reflectance estimates do not resemble either of those solids. The condensate reflectance resembles that of the surface after the covering disappeared. The covering may have been colored by dust which fell before it, by dust mixed with it, or by dust on top of it; but the data strongly support a mixture of dust with H2O and CO2 solids. The covering thickness is estimated to be between 0.5 and a few millimeters.
Document ID
19820029619
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Wall, S. D.
(California Institute of Technology, Jet Propulsion Laboratory, Pasadena CA, United States)
Date Acquired
August 10, 2013
Publication Date
August 1, 1981
Publication Information
Publication: Icarus
Volume: 47
Subject Category
Lunar And Planetary Exploration
Accession Number
82A13154
Funding Number(s)
CONTRACT_GRANT: NAS7-100
PROJECT: PROJECT VIKING
CONTRACT_GRANT: NAS1-9000
Distribution Limits
Public
Copyright
Other

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