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Ionospheric density enhancement during relativistic electron precipitationThe temporal evolution of the ionospheric density enhancement produced by a widespread relativistic electron precipitation (REP) has been observed with the Chatanika Radar. The REP was associated with a substorm particle energization event, and both the ionospheric absorption and density perturbation exhibited an approximately 90 min periodicity associated with the particles' longitudinal drift. A 80-keV characteristic energy for the precipitating electrons is deduced from ground-based and satellite data. At the maximum of the event, electrons deposited approximately 50 ergs/sq cm per sec in the ionosphere, producing a peak density of 500,000/cu cm at 89 km altitude. At that time the radar observed densities greater than 100,000/cu cm between 70 km and 110 km altitude and riometer absorption at 30 MHz was approximately 12 db.
Document ID
19810030012
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Foster, J. C.
(Utah State Univ. Logan, UT, United States)
Doupnik, J. R.
(Utah State Univ. Logan, UT, United States)
Stiles, G. S.
(Utah State University of Agriculture and Applied Science, Logan, Utah, United States)
Date Acquired
August 11, 2013
Publication Date
November 1, 1980
Publication Information
Publication: Geophysical Research Letters
Volume: 7
Subject Category
Geophysics
Accession Number
81A14416
Funding Number(s)
CONTRACT_GRANT: NSG-5216
CONTRACT_GRANT: NSF ATM-76-17334
Distribution Limits
Public
Copyright
Other

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