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Cracked Antarctic glacier
March 26, 2001
cracked Antarctic glacier

Landsat 7, a cooperative mission between NASA and the United States Geological Survey, completed its second annual continent-wide mapping of Antarctica last month. One of the most striking revelations was found on the Pine Island Glacier: a thin crack more than 15 miles (25 kilometers) long, stretching more than two-thirds of the way across the glacier. There was no crack in a previous image 10 months earlier. The before/after images above were taken on March 6, 2000 and January 4, 2001.

One member of the Landsat 7 team said he expected that the crack will result in the calving of a major iceberg in probably less than 18 months.

images: NASA

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