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Combining electric field and aurora observations from DE 1 and 2 with ground magnetometer records to estimate ionospheric electromagnetic quantitiesGlobal distribution of electric fields and currents in the high-latitude ionosphere was estimated using data from the ground-based network of magnetometers and from nearly simultaneous observations with DE 1 and DE 2 satellites. The electric field and current distributions at high altitudes were calculated from instantaneous ionospheric conductivity (estimated from the DE 1 auroral data), using the Kamide et al. (1981) magnetogram inversion technique; an optimum conductivity was then chosen iteratively so that the resultant electric fields would become consistent with electric field deduced from ion drifts measured along the DE-2 orbit. It is demonstrated that, when analyzing the large-scale electrodynamics of individual substorms, statistical conductivity models are not fully adequate for use with the magnetogram inversion technique.
Document ID
19890056298
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Kamide, Y.
(Kyoto Industrial Univ. Japan)
Ishihara, Y.
(Kyoto Industrial University Japan)
Killeen, T. L.
(Michigan, University Ann Arbor, United States)
Craven, J. D.
(Kyoto Industrial Univ. Japan)
Frank, L. A.
(Iowa, University Iowa City, United States)
Date Acquired
August 14, 2013
Publication Date
June 1, 1989
Publication Information
Publication: Journal of Geophysical Research
Volume: 94
ISSN: 0148-0227
Subject Category
Geophysics
Accession Number
89A43669
Funding Number(s)
CONTRACT_GRANT: NGL-16-001-002
CONTRACT_GRANT: NAG5-465
CONTRACT_GRANT: N00014-85-K-0404
CONTRACT_GRANT: NSF ATM-86-10085
CONTRACT_GRANT: NAG5-483
Distribution Limits
Public
Copyright
Other

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