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View Resource Glaciers

Glaciers are found on every continent except Australia. This interactive feature provides an introduction to these moving streams of ice, which cover about 10 percent of Earth's land surface and hold between two and three percent of its water. Topics include what glaciers are, where and why they form, what influences their growth and decline, and how an apparently solid mass appears to flow like...

View Resource USGS Repeat Photography Project: Glacier National Park

This project, conducted by the United States Geological Survey (USGS), documents changes over time in the landscape of Glacier National Park, particularly the retreat of the park's glaciers. The project involves pairing historic photos from the park's archives with recent photos to illustrate how the landscape has changed. Users can view and download the photos in pairs with dates and a caption...

View Resource Cold Science article

University of Alaska scientists report that Alaskan glaciers are melting more rapidly than anticipated; an estimated 24 cubic miles of ice disappearing annually. Conditions promoting glacial growth vs. shrinking are briefly reviewed; melting is an indicator of climate change. Results confirm proposals that glacial melting is a major contributor to sea level rise; findings indicate that melting of...

View Resource Glacial and Postglacial Geology Highlights in the White Mountain National Forest, Western Maine

This guide introduces visitors to the glacial and postglacial geology of the White Mountain National Forest in western Maine. The discussion covers the timing of the glaciation (the Laurentide Ice Sheet, 25,000-13,000 years ago) and the numerous features left behind: erosional features such as high cliffs, grooves and striations; depositional features such as till, erratics, and glacial lake...

View Resource Atlas of the Cryosphere

The Atlas of the Cryosphere allows visitors to explore and dynamically map the Earth's frozen regions. Viewed from a polar perspective, the available scenes include snow cover, sea ice extent and concentration, glaciers, permafrost, and other critical components of the Earth's cryosphere. Users can zoom in to a specific region on the Earth and overlay country borders, major cities, and other...

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