Institute of Geophysics and Planetary Physics, University of California, Los Angeles, 595 Charles E. Young Dr. East 6862 Slichter Hall, Los Angeles, CA 90095, USA
Institute of Geophysics and Planetary Physics, University of California, Los Angeles, 595 Charles E. Young Dr. East 6862 Slichter Hall, Los Angeles, CA 90095, USA
Space Sciences Laboratory, University of California, Berkeley, SSL, UC Berkeley, Berkeley, CA 94720, USA
Instituto de Geofàsica, Universidad Nacional Autonoma de México, Instituto de Geofàsica, UNAM, Ciudad Universitaria, Coyoacan, Mexico D.F., 04510, Mexico
Institute of Geophysics and Planetary Physics, University of California, Los Angeles, 595 Charles E. Young Dr. East 6862 Slichter Hall, Los Angeles, CA 90095, USA
Department of Physics, University of New Hampshire, Department of Physics, University of New Hampshire, Durham, NH 03824, USA
Institute of Geophysics and Meteorology, University of Cologne, Institute of Geophysics and Meteorology, University of Cologne, Cologne, D-50923, Germany
Institute of Geophysics and Meteorology, University of Cologne, Institute of Geophysics and Meteorology, University of Cologne, Cologne, D-50923, Germany