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Mariner 9 Observations of the South Polar Cap of Mars' Evidence for Residual CO₂ Frost

Paige, D. A. and Herkenhoff, K. E. and Murray, Bruce C. (1990) Mariner 9 Observations of the South Polar Cap of Mars' Evidence for Residual CO₂ Frost. Journal of Geophysical Research B, 95 (B2). pp. 1319-1335. ISSN 0148-0227. doi:10.1029/JB095iB02p01319.

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The first spacecraft observations of the south residual polar cap of Mars were obtained by the Mariner 9 orbiter during the Martian southern summer season, 1971–1972. Analyses of Viking orbiter observations obtained 3 Mars years later have shown that residual carbon dioxide frost was present at the south polar cap in 1977. In this study, Mariner 9 infrared interferometer spectrometer spectra and television camera images are used in conjunction with multispectral thermal emission models to constrain the temperatures of dark bare ground and bright frost regions within the south residual cap. The results provide strong evidence that carbon dioxide frost was present throughout the summer season despite the fact that the residual frost deposits observed by Mariner 9 were less extensive than those observed by Viking.

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Herkenhoff, K. E.0000-0002-3153-6663
Additional Information:Copyright 1990 by the American Geophysical Union. Received September 16, 1988; revised June 15, 1989; accepted June 19, 1989. We thank Peter Gierasch and Hugh Kieffer for extremely helpful reviews of this manuscript. This research was supported by the NASA Planetary Geology and Geophysics Program.
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Subject Keywords:Planetology: Solid Surface Planets and Satellites: Atmospheric composition and chemistry Planetology: Solid Surface Planets and Satellites: General or miscellaneous Planetology: Solid Surface Planets and Satellites: Physical properties of materials
Issue or Number:B2
Record Number:CaltechAUTHORS:20140414-160713373
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Official Citation:Paige, D. A., K. E. Herkenhoff, et al. (1990). "Mariner 9 observations of the south polar cap of Mars: Evidence for residual CO2 frost." Journal of Geophysical Research: Solid Earth 95(B2): 1319-1335.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:44938
Deposited By: David McCaslin
Deposited On:14 Apr 2014 23:43
Last Modified:10 Nov 2021 16:58

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