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Greenland Ice Sheet
(redirected from Greenland ice cap)

   Also found in: Wikipedia 0.01 sec.

Greenland Ice Sheet

Single ice cap, Greenland. Covering about 80% of the island of Greenland, it is the largest ice mass in the Northern Hemisphere, second only to the Antarctic. It extends 1,570 mi (2,530 km) north to south, has a maximum width of 680 mi (1,094 km) near its northern margin, and an average thickness of about 5,000 ft (1,500 m). The ice sheet rises to two domes; the northern dome, reaching more than 10,000 ft (3,000 m), is its thickest and coldest point. In volume it contains 12% of the world's glacial ice. If it melted, the sea level would rise 20 ft (6 m).



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Such scenarios include the Greenland ice cap collapsing and causing a massive surge in sea levels, or huge amounts of methane trapped in Siberian permafrost suddenly being released into the atmosphere.
Hayes and his team are setting off on their 3,500 kilometre journey across the Greenland ice cap to raise awareness of the issue of 'sustainability' and how countries worldwide need to address their use of the planet's resources.
Soon he will go from one extreme temperature to the other: 35c to -35c He said: "It's a long way from the Greenland ice cap, but training is training and pulling tyres is a staple diet of polar travel.
 
 
 
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