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Science 21 January 1972:
Vol. 175. no. 4019, pp. 305 - 308
DOI: 10.1126/science.175.4019.305
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Articles

Infrared Spectroscopy Experiment on the Mariner 9 Mission: Preliminary Results

R. A. Hanel 1, B. J. Conrath 1, W. A. Hovis 1, V. G. Kunde 1, P. D. Lowman 1, J. C. Pearl 1, C. Prabhakara 1, B. Schlachman 1, and G. V. Levin 2

1 Laboratory for Planetary Atmospheres, Goddard Space Flight Center, Greenbelt, Maryland 20771
2 Biospherics Incorporated, Rockville, Maryland 20853

The Mariner 9 infrared spectroscopy experiment has provided goodquality spectra of many areas of Mars, predominantly in the southern hemisphere. Large portions of the thermal emission spectra are significantly affected by dust with a silicon oxide content approximately corresponding to that of an intermediate igneous rock, thus implying that Mars has undergone substantial geochemical differentiation. Derived temperature profiles indicate a warm daytime upper atmosphere with a strong warming over the south polar cap. Atmospheric water vapor is clearly observed over the south polar area and less strongly over other regions.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
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Results from the Mars Global Surveyor Thermal Emission Spectrometer.
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Star Dust.
E. P. Ney (1977)
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Mars: Mariner 9 Spectroscopic Evidence for H2O Ice Clouds.
R. J. Curran, R. J. Curran, B. J. Conrath, R. A. Hanel, V. G. Kunde, and J. C. Pearl (1973)
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