
Greenland's ice is melting from the bottom up -- and far faster than previously thought, study shows
CNN
"Unprecedented" rates of melting have been observed by scientists at the bottom of the ice sheet.
"Unprecedented" rates of melting have been observed at the bottom of the ice sheet, caused by huge quantities of meltwater falling down from the surface, according to the study published in the Proceedings of the National Academy of Sciences.
As the meltwater falls, its gravitational potential energy is converted to kinetic energy, which ultimately warms the water as it pools at the base of the ice sheet. In that process, the study found that the Greenland ice sheet produces more energy than the world's 10 largest hydroelectric dams combined.
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