polar caps


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polar caps

Regions of ice that form around the northern and southern poles of a planet or planetary satellite. Earth's polar caps consist of water ice and snow whereas the caps of Mars are comprised of both water ice and frozen carbon dioxide. The southern polar cap of Triton is pink and thought to be due to nitrogen snow and ice. Polar caps can show seasonal variation.
References in periodicals archive ?
Mars's north polar cap (hearafter NPC) consists of two parts: a seasonal cap and a permanent cap.
Reducing the ice mass at the polar caps and distributing it throughout the oceans of the world can have the reverse effect and potentially slow the Earth's rotation and change the magnetic field that rotation creates, according to the Japanese researchers.
Direct exploration by Mariner 4 shows that the polar caps are made up of solid carbon dioxide.
THE RED PLANET Mars has polar caps like Earth, although they contain mostly frozen carbon dioxide instead of frozen water
The rings of Saturn when first seen edge-on just take your breath away, as do the white polar caps on Mars.
Then Al Gore came under attack about the statement he made on melting of polar caps.
Amy Sibson, 14, of Redcar: "I read somewhere that Marske is going to be affected by polar caps melting so future generations might not be able to live here.
The following lemma on the diameter of the polar caps has an elementary proof, which is omitted.
Although the full effects will take decades before the temperature rises by 2C at the polar caps, action must be taken now to prevent this.
And we are over her looking at the blue of the ocean and the misty white cloud cover and the white polar caps.
If successful Sir Ranulph, aged 61, will have raised pounds 2 million for the British Heart Foundation, and be the first one to traverse both polar caps and the highest peak
An American man had beenJoke:Jim Dale in Carry On Columbus on the telly saying that if we don't take care of the environment, the world is going to heat up, weather will become more severe, the polar caps will melt, water levels will rise and flooding will become more severe.