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polar cap |
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polar cap [′pō·lər ‚kap] (astronomy) Any of the bright areas covering the poles of Mars, believed to be composed of frozen carbon dioxide and water-ice. (hydrology) An ice sheet centered at one of the poles of the earth. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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The images, taken by a camera aboard the Mars Global Surveyor spacecraft, provide evidence supporting earlier observations that the Red Planet's south polar cap is shrinking at a rate of about 3 meters every 2 Earth years. ``The south polar cap has been very distinct on Mars,'' he said. Losi has long focused her attention on geographic sites or plant elements--a glacier in Vorland, 1998, the polar cap in Nord (North), 1998, the Orkney islands in Orkney, 1999, for example. |
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