STOCK, Greg M.1, AVDIEVITCH, Nikita2, PAINTER, Thomas H.3, BORMANN, Kat J.3, ANDERSON, Robert S.4, BASAGIC, Hassan5 and FOUNTAIN, Andrew5, (1)National Park Service, Yosemite National Park, 5083 Foresta Road Box 700, El Portal, CA 95318, (2)U.S. Geological Survey, Geologic Hazards Science Center, 1711 Illinois Street, Golden, CO 80401, (3)Airborne Snow Observatories, Inc, PO Box 1644, Mammoth Lakes, CA 93546, (4)Department of Geological Sciences and INSTAAR, University of Colorado, Boulder, CO 80309, (5)Department of Geology, Portland State University, Portland, OR 97207-0751