University of Washington, Department of Earth and Space Sciences, box 351310, seattle, wa 98195 United States ; Los Alamos National Laboratory, h805, los alamos, nm 87545 United States
lawrence livermore national laboratory, 7000 East Ave, livermore, ca 94550 United States
United states geological survey, 345 middlefield rd, menlo park, ca 94025 United States
Los Alamos National Laboratory, h805, los alamos, nm 87545 United States