MARINE SCIENCE
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Polar Expedition to Record Shrinking Arctic Ice A British expedition plans to walk, and even swim, a 2000 kilometre journey to the North Pole as part of an attempt to draw up an accurate prediction of when the Arctic ice cap will disappear. "We're not doing it for a laugh," says Pen Hadow, the British explorer leading expedition to set off in the New Year. The only way to get an accurate gauge of the ice thickness is to take ground-based measurements, he says. Satellite and submarine measurements have in recent years delivered an unprecedented amount of data as to the thickness of the polar cap, but both leave a high margin of error, says João Rodrigues, a member of the expedition's scientific team from the Polar Oceans Physics Group at the University of Cambridge. |
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