30 Apr '17, 1pm

Giant Waterfall in Antarctica Worries Scientists and should worry all of us!

Scientists poring over military and satellite imagery have mapped the unimaginable: a network of rivers, streams, ponds, lakes and even a waterfall, flowing over the ice shelf of a continent with an annual mean temperature of more than -50C. In 1909 Ernest Shackleton and his fellow explorers on their way to the magnetic South Pole found that they had to cross and recross flowing streams and lakes on the Nansen Ice Shelf. Antarctic Waterways Now, U.S. scientists report in the journal Nature that they studied photographs taken by military aircraft from 1947 and satellite images from 1973 to identify almost 700 seasonal networks of ponds, channels and braided streams flowing from all sides of the continent, as close as 600km to the South Pole and at altitudes of 1,300 meters. And they found that such systems carried water for 120km. A second research team reporting a companio...

Full article: http://www.ecowatch.com/antarctica-waterfall-ice-melt-237...

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Giant Waterfall in Antarctica Worries Scientists

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