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DE-1 observations of VLF transmitter signals and wave-particle interactions in the magnetosphereA broadband VLF receiver on the DE-1 satellite measures signals injected into the magnetosphere by ground-based transmitters. VLF emissions triggered by these signals indicate that the waves interact strongly with trapped energetic particles in the magnetosphere. The propagation paths from the source to the satellite are deduced on the basis of the group time delay and Doppler shift. Although there are many different paths, emissions are triggered by the later-arriving pulses that have traversed the geomagnetic equator. First satellite-based observations of emission triggering by high-power communications transmitters and their possible implications are discussed.
Document ID
19820061292
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Inan, U. S.
(Stanford Univ. CA, United States)
Helliwell, R. A.
(Stanford University Stanford, CA, United States)
Date Acquired
August 10, 2013
Publication Date
September 1, 1982
Publication Information
Publication: Geophysical Research Letters
Volume: 9
Subject Category
Geophysics
Accession Number
82A44827
Funding Number(s)
CONTRACT_GRANT: NAS5-25688
CONTRACT_GRANT: NSF DPP-80-22282
CONTRACT_GRANT: NSF DPP-80-22540
CONTRACT_GRANT: NSF DPP-79-23171
Distribution Limits
Public
Copyright
Other

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