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ground ice |
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ground ice [′grau̇nd ‚īs] (hydrology) A body of clear ice in frozen ground, most commonly found in more or less permanently frozen ground (permafrost), and may be of sufficient age to be termed fossil ice. Also known as stone ice; subsoil ice; subterranean ice; underground ice. 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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| Instead, he notes, the small amount of water "may just be very local melting of near-surface ground ice," warmed by the planet's internal heat or perhaps by the sun during periods when the north or south pole is tilted closer to the sun. A large body of evidence now suggests that Mars' highland crust contains the planet's major reservoir of water, stored as ground ice since an earlier, wetter epoch on the planet. |
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