Article (Scientific journals)
Magnetic storm effects on the tropical ultraviolet airglow
Gérard, Jean-Claude; Anderson, D. N.; Matsushita, S.
1977In Journal of Geophysical Research, 82, p. 1126-1136
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Keywords :
AIRGLOW; GEOMAGNETISM; MAGNETIC STORMS; NIGHT SKY; TROPICAL REGIONS; F REGION; low latitude; ultraviolet; MAGNETIC ANOMALIES; OGO-4; OXYGEN SPECTRA
Abstract :
[en] Ogo 4 measurements of the UV equatorial airglow made during a period which included a major magnetic storm are analyzed and used as an indicator of wind direction and velocity as well as ExB drift magnitude and phase. Some features of the airglow intensity and distribution are explained in terms of storm-induced changes in vertical drift velocity, neutral composition, or both. The observations are shown to be consistent with an eastward neutral wind that transports ionization from the Southern to the Northern Hemisphere while raising the F layer in the South and lowering it in the North. Theoretical modeling of the low-latitude F-region ionosphere indicates that an eastward wind with velocity approaching 300 m/s at 2100 LT can qualitatively produce the observed hemispheric asymmetries in airglow emission rates.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Gérard, Jean-Claude  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Labo de physique atmosphérique et planétaire (LPAP)
Anderson, D. N.;  NOAA, Space Environment Laboratory, Boulder, Colo.
Matsushita, S.;  High Altitude Observatory, Boulder, Colo.
Language :
English
Title :
Magnetic storm effects on the tropical ultraviolet airglow
Publication date :
01 March 1977
Journal title :
Journal of Geophysical Research
ISSN :
0148-0227
eISSN :
2156-2202
Publisher :
American Geophysical Union (AGU), Washington, United States
Volume :
82
Pages :
1126-1136
Peer reviewed :
Peer Reviewed verified by ORBi
Commentary :
A&AA ID. AAA019.084.222
Available on ORBi :
since 31 October 2009

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