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Double-peaked electrostatic ion cyclotron harmonic wavesElectrostatic H(+) cyclotron harmonic waves are often observed along the auroral field lines at altitudes of 1-3.5 R(E) by the Dynamics Explorer 1 satellite. A small fraction of these waves are found to have two peaks associated with each harmonic instead of one peak. The waves occur below the lower hybrid frequency and are usually relatively weak, about a factor of 4 smaller than typical electric field amplitudes of other H(+) cyclotron harmonic wave events. The double-peaked spectral signature is believed to be produced by Doppler shifts arising from the satellite velocity relative to the plasma rest frame. The waves were found to have wavelengths of the order of 300 m and phase velocities of the order of 150 km/s.
Document ID
19900054452
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Boardsen, S. A.
(NASA Marshall Space Flight Center Huntsville, AL; Iowa, University, Iowa City, United States)
Gurnett, D. A.
(Iowa, University Iowa City, United States)
Peterson, W. K.
(Lockheed Missiles and Space Co., Inc. Palo Alto, CA, United States)
Date Acquired
August 14, 2013
Publication Date
July 1, 1990
Publication Information
Publication: Journal of Geophysical Research
Volume: 95
ISSN: 0148-0227
Subject Category
Geophysics
Accession Number
90A41507
Funding Number(s)
CONTRACT_GRANT: NAGW-1488
CONTRACT_GRANT: NAS5-28710
CONTRACT_GRANT: NGL-16-001-043
CONTRACT_GRANT: NAG5-310
Distribution Limits
Public
Copyright
Other

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