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Polar views of the earth's aurora with Dynamics ExplorerPreliminary examination of the first global auroral images gained with the vacuum-ultraviolet imaging photometer on board DE 1 reveals a remarkable spatial configuration of auroral luminosities. Frequently the northern auroral oval is bifurcated by a sun-aligned arc extending from the midday auroral zone to the nighttime sector of the oval. Simultaneous plasma measurements with the low-altitude DE-2 spacecraft are used to show that the character of plasmas above the polar arc is similar to those found over the poleward zones of the auroral oval. The spatial distribution of auroral luminosities is suggestive of a two-cell structure of current systems and convection electric fields over the earth's polar cap and a similar division of the corresponding lobe in the magnetotail.
Document ID
19820061313
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Frank, L. A.
(Iowa Univ. Iowa City, IA, United States)
Craven, J. D.
(Iowa, University Iowa City, IA, United States)
Burch, J. L.
(Iowa Univ. Iowa City, IA, United States)
Winningham, J. D.
(Southwest Research Institute San Antonio, TX, United States)
Date Acquired
August 10, 2013
Publication Date
September 1, 1982
Publication Information
Publication: Geophysical Research Letters
Volume: 9
Subject Category
Geophysics
Report/Patent Number
AD-A120557
Accession Number
82A44848
Funding Number(s)
CONTRACT_GRANT: NAS5-25693
CONTRACT_GRANT: N00014-76-C-0016
CONTRACT_GRANT: NGL-16-001-002
CONTRACT_GRANT: NAS5-26363
CONTRACT_GRANT: NAS5-25689
Distribution Limits
Public
Copyright
Other

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