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The large-scale ionospheric electric field - Its variation with magnetic activity and relation to terrestrial kilometric radiationFour days of simultaneous auroral zone electric field measurements on balloons flown from six sites spanning 180 deg of magnetic longitude have been analyzed. The average electric field behavior during this magnetically quiet epoch is consistent with earlier single-point measurements, although the average auroral zone electric field was more affected by corotation effects than it was during more disturbed times. When these data, which primarily reflect the large-scale (several hundred kilometer) ionospheric electric field, are mapped to the equator, a steady dawn to dusk component is apparent only on the average, while instantaneously the field is quite variable. The ionospheric electric field during isolated substorms is shown to have differing signatures east and west of 2200 LT. A worldwide positive correlation is shown to exist between the auroral zone electric field strength and the intensity of terrestrial kilometric radiation.
Document ID
19770059439
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Holzworth, R. H.
(California Univ. Berkeley, CA, United States)
Cullers, D. K.
(California Univ. Berkeley, CA, United States)
Hudson, M. K.
(California, University Berkeley, Calif., United States)
Berthelier, J.-J.
(Paris VI, Universite Paris, France)
Fahleson, U. V.
(California Univ. Berkeley, CA, United States)
Falthammar, C.-G.
(Kungl. Tekniska Hogskolan Stockholm, Sweden)
Jalonen, L.
(California Univ. Berkeley, CA, United States)
Tanskanen, P.
(Oulu, University Oulu, Finland)
Kelley, M. C.
(Cornell University Ithaca, N.Y., United States)
Kellogg, P. J.
(Minnesota, University Minneapolis, Minn., United States)
Date Acquired
August 9, 2013
Publication Date
July 1, 1977
Publication Information
Publication: Journal of Geophysical Research
Volume: 82
Subject Category
Geophysics
Accession Number
77A42291
Funding Number(s)
CONTRACT_GRANT: N00014-75-C-0294
CONTRACT_GRANT: NAS5-10060
CONTRACT_GRANT: NAS5-20837
CONTRACT_GRANT: NSF GA-33112X
CONTRACT_GRANT: CNES-74-207
Distribution Limits
Public
Copyright
Other

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