Results from the Mars global surveyor thermal emission spectrometer

Philip Christensen, D. L. Anderson, S. C. Chase, R. T. Clancy, R. N. Clark, B. J. Conrath, H. H. Kieffer, R. O. Kuzmin, M. C. Malin, J. C. Pearl, T. L. Roush, M. D. Smith

Research output: Contribution to journalArticlepeer-review

163 Scopus citations


The Thermal Emission Spectrometer spectra of low albedo surface materials suggests that a four to one mixture of pyroxene to plagioclase, together with about a 35 percent dust component provides the best fit to the spectrum. Qualitative upper limits can be placed on the concentration of carbonates (<10 percent), olivine (<10 percent), clay minerals (<20 percent), and quartz (<5 percent) in the limited regions observed. Limb observations in the northern hemisphere reveal low-lying dust hazes and detached water-ice clouds at altitudes up to 55 kilometers. At an aerocentric longitude of 224°a major dust storm developed in the Noachis Terra region. The south polar cap retreat was similar to that observed by Viking.

Original languageEnglish (US)
Pages (from-to)1692-1696
Number of pages5
Issue number5357
StatePublished - Mar 13 1998

ASJC Scopus subject areas

  • General


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