New map charts 1,943 valleys beneath Greenland’s ice
NASA Earth Observatory says researchers inferred the buried terrain from subtle bumps and dips on the ice surface. About a third of the valleys they mapped were newly identified.
TLDR
NASA Earth Observatory reports that a NASA-led study mapped 1,943 valleys beneath the Greenland Ice Sheet, about a third of them newly identified. Researchers found that about half the valleys in an existing bedrock dataset extend farther inland than the dataset shows. Better mapping could help refine projections of future ice flow.
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