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Figure 25.—Landsat 7 ETM+ false-color composite image of the Alaskan Arctic coastal plain showing a predominance of elongated oriented lakes and other forms of thermokarst lakes. The lakes are oriented approximately north-south; the prevailing wind direction is from the northeast. Landsat 7 ETM+ image (L71079010-01020000815, path 79, row 10; 15 August 2000) from the U.S. Geological Survey EROS Data Center, Sioux Falls, S. Dak.