Institute of Geophysics and Planetary Physics, Scripps Institution of Oceanography, University of California, San Diego 9500 Gilman Ave., MC 0225, San Diego, CA 92093 United States
University of California, Los Angeles, Earth and Space Sciences 595 Charles Young Dr., Los Angeles, CA 90095 United States ; Jet Propulsion Laboratory, California Institute of Technology 4800 Oak Grove Drive, Pasadena, CA 91109 United States