By Samuel Y. Johnson,1 Alan R. Nelson,1 Stephen F. Personius,1 Ray E. Wells,2 Harvey M. Kelsey,3 Brian L. Sherrod,4 Koji Okumura,5 Rich Koehler,6 Robert Witter,6 Lee-Ann Bradley,1 and David J. Harding7
Version 1.0
1 U.S. Geological Survey, Box 25046, MS 966, Denver Federal Center, Denver,
CO 80225
2 U.S. Geological Survey, 345 Middlefield Road, Menlo Park, CA 94025
3 Department of Geology, Humboldt State University, Arcata, CA 95521
4 U.S. Geological Survey at Department of Earth and Space Sciences,
University of Washington, Seattle, WA 98195
5 Department of Geography, Hiroshima University, 1-2-3 Hagamiyama,
Higashi-Hiroshima, 739-8522 JAPAN
6 William Lettis and Associates, Inc., Earth Science Consultants, San Rafael,
CA 94901
7 NASA, Goddard Space Flight Center, Mail Code 921, Greenbelt, MD 20771-0001
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