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Polychrome Glaciers photo pair
Photo Credits: W. Verde Watson (Denali NP&P Museum Coll. 23302) (1963), R. D. Karpilo (2012)
Ecoregion: Alaska Range Mountains
Change Type: Glacial thinning and retreat
Glacial thinning and retreat
Description:
The series of glaciers in the mountains shown here are the Polychrome Glaciers, visible from near the Polychrome Overlook (milepost 45). Over the 49 years depicted here, evidence of glacier shrinking and thinning is apparent. Look closely at each glacier to see the differences, and then follow each stream out to the photo foreground. What other changes have occurred downstream of the glaciers? Are they what you would expect? Glacier-fed rivers carry a high sediment load, which creates many braided channels. How will a change in sediment load, due to an altered glacial outflow pattern, effect the vegetation, and therefore the movement of animals throughout the floodplain?