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World's largest ice sheet melting faster than expected http://apocadocs.com/s.pl?1258914759
The world's largest ice sheet has started to melt along its coastal fringes, raising fears that global sea levels will rise faster than scientists expected.
The East Antarctic ice sheet, which makes up three-quarters of the continent's 14,000 sq km, is losing around 57bn tonnes of ice a year into surrounding waters, according to a satellite survey of the region.
Scientists had thought the ice sheet was reasonably stable, but measurements taken from Nasa's gravity recovery and climate experiment (Grace) show that it started to lose ice steadily from 2006.
The measurements suggest the polar continent could soon contribute more to global sea level rises than Greenland, which is shedding more than 250bn tonnes of ice a year, adding 0.7mm to annual sea level rises.
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[Read more stories about:
arctic meltdown, rising sea level, climate impacts]
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'Doc Jim says:
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Now Greenland, don't start getting competitive, ok?
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