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Title: Kinetic Alfvén waves and particle response associated with a shock-induced, global ULF perturbation of the terrestrial magnetosphere

On 2 October 2013, the arrival of an interplanetary shock compressed the Earth's magnetosphere and triggered a global ULF (ultra low frequency) oscillation. Furthermore, the Van Allen Probe B spacecraft observed this large-amplitude ULF wave in situ with both magnetic and electric field data. Broadband waves up to approximately 100 Hz were observed in conjunction with, and modulated by, this ULF wave. Detailed analysis of fields and particle data reveals that these broadband waves are Doppler-shifted kinetic Alfvén waves. This event then suggests that magnetospheric compression by interplanetary shocks can induce abrupt generation of kinetic Alfvén waves over large portions of the inner magnetosphere, potentially driving previously unconsidered wave-particle interactions throughout the inner magnetosphere during the initial response of the magnetosphere to shock impacts.
Authors:
 [1] ;  [2] ;  [3] ;  [1] ;  [1] ;  [1] ;  [4] ; ORCiD logo [5] ;  [6]
  1. Laboratory for Atmospheric and Space Physics, University of Colorado Boulder, Boulder Colorado USA
  2. Space Sciences Department, Aerospace Corporation, El Segundo California USA
  3. The Johns Hopkins University Applied Physics Laboratory, Laurel Maryland USA
  4. School of Physics and Astronomy, University of Minnesota, Minneapolis Minnesota USA
  5. Los Alamos National Laboratory, Los Alamos New Mexico USA
  6. Department of Physics and Astronomy, University of Iowa, Iowa City Iowa USA
Publication Date:
Report Number(s):
LA-UR-15-27236
Journal ID: ISSN 0094-8276; TRN: US1702872
Grant/Contract Number:
AC52-06NA25396; NAS5-01072
Type:
Accepted Manuscript
Journal Name:
Geophysical Research Letters
Additional Journal Information:
Journal Volume: 42; Journal Issue: 21; Journal ID: ISSN 0094-8276
Publisher:
American Geophysical Union
Research Org:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org:
USDOE; National Aeronautic and Space Administration (NASA)
Country of Publication:
United States
Language:
English
Subject:
58 GEOSCIENCES; Heliospheric and Magnetospheric Physics
OSTI Identifier:
1402591