Exposed water ice discovered near the south pole of Mars

Timothy N. Titus, Hugh H. Kieffer, Philip Christensen

Research output: Contribution to journalArticlepeer-review

184 Scopus citations


The Mars Odyssey Thermal Emission Imaging System (THEMIS) has discovered water ice exposed near the edge of Mars' southern perennial polar cap. The surface H2O ice was first observed by THEMIS as a region that was cooler than expected for dry soil at that latitude during the summer season. Diurnal and seasonal temperature trends derived from Mars Global Surveyor Thermal Emission Spectrometer observations indicate that there is H2O ice at the surface. Viking observations, and the few other relevant THEMIS observations, indicate that surface H2O ice may be widespread around and under the perennial CO2 cap.

Original languageEnglish (US)
Pages (from-to)1048-1051
Number of pages4
Issue number5609
StatePublished - Feb 14 2003

ASJC Scopus subject areas

  • General


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