NASAのインスタグラム(nasa) - 4月20日 01時34分

Researchers were greatly surprised to discover 3-million-year-old landscape beneath Greenland Ice Sheet! The finding provides strong evidence that the Greenland Ice Sheet has persisted much longer than previously known, enduring through many past periods of global warming.

The new discovery indicates that even during the warmest periods since the ice sheet formed, the center of Greenland remained stable. "It’s likely that it did not fully melt at any time," said University of Vermont geologist and lead author Paul Bierman. This allowed a tundra landscape to be locked away, unmodified, under ice through millions of years of global warming and cooling.

Image Credit: Joshua Brown, University of Vermont

#ice #green;and #nasa #science #climate #climatechange #greenlandicesheet

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