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Taking a Bite Out of Pi

A cycle of rapid advance and retreat at Sortebræ, a glacier in eastern Greenland, built pi-shaped tongues of ice before they later retreated.


NASA Earth Observatory images by Wanmei Liang, using Landsat data from the U.S. Geological Survey. Story by Adam Voiland.

Published March 14, 2024
Data acquired September 6, 1986 - September 12, 2023

Sources:
Landsat 5 > TM
Landsat 8 > OLI