Diagram of Before and after Glaciers (IMAGE)

University of Alaska Fairbanks

Diagram of Before and after Glaciers

Caption

The terminus of the Taku Glacier, in the images at left, advanced more than three miles from 1933 to 2016, as reflected by the yellow and blue lines superimposed on the photographs. The location of the red dot on a mountain in the top image matches the location of the righthand red dot in the lower image. The images and lines at right show the Columbia Glacier's retreat from 1985 to 2016.

Credit

Image courtesy of Douglas Brinkerhoff, from photography by the US Navy, the National Snow and Ice Data Center, Martin Truffer and the Landsat 7 and 8 satellites via US Geological Survey

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