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On the Rocks
Glacier National Park’s Grinnell Glacier has retreated steadily for more than a century. The glacier’s surface area was 2.33 sq. km in 1850 and 0.88 sq. km in 1993, the date of the last precise survey. It has already lost about 90 percent of its volume since 1910, and experts expect considerable destruction of the glacier in the next 10 years.
photos courtesy of the Extreme Ice Survey
Uploaded: Feb 18, 2010 |
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