Stanford University, Department of Geological & Environmental Sciences 450 Serra Mall Braun Hall, Building 320, Palo Alto, CA 94305-2115 United States
Stanford University, Department of Geological & Environmental Sciences 450 Serra Mall Braun Hall, Building 320, Palo Alto, CA 94305-2115 United States
International Arctic Research Center, University of Alaska Fairbanks P.O. Box 757340, Fairbanks, AK 99775-734 United States
University of Alaska Fairbanks, Geophysical Institute, University of Alaska Fairbanks, Fairbanks, AK 99775 United States