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Ion cyclotron waves observed in the polar cusp.During the penetration by Ogo 5 of the low-latitude disturbed polar cusp region on Nov. 1, 1968, while a major magnetic storm was in progress, a variety of plasma wave activity was observed. Observations of waves with amplitudes less than 2% of the background magnetic field intensity and having frequencies between approximately 0.67 and 0.87 times the local proton gyrofrequency are described. The polarization of these waves indicates that they are propagating at an appreciable angle to the local geomagnetic field line direction. The source of these waves has not been determined, but currents and gradient drifts are suggested as possible agents.
Document ID
19730048635
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Fredricks, R. W.
(TRW Systems Group Redondo Beach, Calif., United States)
Russell, C. T.
(California, University Los Angeles, Calif., United States)
Date Acquired
August 7, 2013
Publication Date
June 1, 1973
Publication Information
Publication: Journal of Geophysical Research
Volume: 78
Subject Category
Geophysics
Report/Patent Number
NSSDC-ID-68-014A-14-PM
NSSDC-ID-68-014A-17-OM
NSSDC-ID-68-014A-13-PM
NSSDC-ID-68-014A-24-PM
Accession Number
73A33437
Funding Number(s)
CONTRACT_GRANT: NAS5-9098
CONTRACT_GRANT: NAS5-9278
Distribution Limits
Public
Copyright
Other

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