Institute of Geophysics and Planetary Physics, University of California, 405 Hilgard Avenue, Los Angeles, 90095-1567, USA; Department of Physics and Astronomy, University of California, 405 Hilgard Avenue, Los Angeles, CA 90095-1547, USA
Institute of Geophysics and Planetary Physics, University of California, 405 Hilgard Avenue, Los Angeles, 90095-1567, USA
Department of Physics and Astronomy, University of California, 405 Hilgard Avenue, Los Angeles, CA 90095-1547, USA
Institute of Geophysics and Planetary Physics, University of California, 405 Hilgard Avenue, Los Angeles, 90095-1567, USA; Department of Earth and Space Sciences, University of California, 405 Hilgard Avenue, Los Angeles, CA 90095-1567, USA
Institute of Geophysics and Planetary Physics, University of California, 405 Hilgard Avenue, Los Angeles, 90095-1567, USA
Department of Physics and Astronomy, University of Iowa, Van Allen Hall, Iowa City, IA 52242-1403, USA
Department of Physics and Astronomy, University of Iowa, Van Allen Hall, Iowa City, IA 52242-1403, USA
Department of Physics and Astronomy, University of Iowa, Van Allen Hall, Iowa City, IA 52242-1403, USA