Report

Exposed Water Ice Discovered near the South Pole of Mars

Science  14 Feb 2003:
Vol. 299, Issue 5609, pp. 1048-1051
DOI: 10.1126/science.1080497

You are currently viewing the abstract.

View Full Text
As a service to the community, AAAS/Science has made this article free with registration.

Abstract

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.

  • * To whom correspondence should be addressed. E-mail: ttitus{at}usgs.gov

View Full Text