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Remote River Reconnaissance
maps, it was just not good enough.” Abell, Lehner, and their colleagues initially studied watersheds around the Madre de Dios River in South America. (© 2005 damclean.) Lehner and Abell needed a more detailed data source, and for that Lehner turned to topographic ...
New Light on Ice Motion (DAAC Study)
MODIS' sensitivity to small variations in reflected light facilitates researchers' ability to track subtle ridges left by slight changes in flow pattern. Each image contains the digital equivalent of thousands of shades of gray, providing impressive contrast that highlights subtle ice sheet a...