File:Grinnell Glacier.jpg

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Description

An overhead view of the same glacier with outlines marking changes in its areal extent.

A 1981 aerial photograph of Grinnell Glacier in Glacier National Park with indications of the approximate former extent of the glacier. This glacier has retreated from a total extent of ~2.3 square kilometers circa 1850 to ~1.1 square kilometers in 1993, and is now distributed in two major and five minor segments. [1] Like other glaciers in Glacier National Park, it is predicted that Grinnell Glacier will disappear by 2030 under current projections for the rate and extent of global warming (Hall 1994).

Copyright

From http://nrmsc.usgs.gov/research/grinnell.htm

Original figure, [2], released into the public domain by the USGS. Subsequently cropped and retitled by User:Lulu of the Lotus-Eaters, who also released it into the public domain.

This image is a work of a United States Geological Survey employee, taken or made during the course of the person's official duties. As a work of the United States Government, the image is in the public domain. For more information, see the USGS copyright policy.

References

• Hall, M. H. P. (1994). Predicting the impact of climate change on glacier and vegetation distribution in Glacier National Park to the Year 2100. Syracuse, NY: State University of New York, 192 pp. M.S. Thesis. 

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File history

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	04:12, 5 March 2006		640×564 (181 KB)	Robert A. Rohde (Talk | contribs)	(cropped version by w:User:Lulu of the Lotus-Eaters)
	10:18, 20 February 2006		640×799 (70 KB)	Robert A. Rohde (Talk | contribs)