Ice shelves lose more mass than previously thought.
Scientists hold that ice shelves ( the extension of glaciers on lands) lose the major part of their mass by shedding icebergs. But a recent research claims that there's another weight-loss factor in action: many Antarctica's ice shelves are melting away from the bottom up.
A team of Glaciers expert, lead by Eric Rignot of University of California, have measured ice shelf thickness and speed, by using a combination of satellite data, radar and coputer models.
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