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| Titel |
Meridional equatorial electrojet current in the American sector |
| VerfasserIn |
R. G. Rastogi |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
0992-7689
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| Digitales Dokument |
URL |
| Erschienen |
In: Annales Geophysicae ; 17, no. 2 ; Nr. 17, no. 2, S.220-230 |
| Datensatznummer |
250013674
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| Publikation (Nr.) |
 copernicus.org/angeo-17-220-1999.pdf |
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| Zusammenfassung |
Huancayo is the only equatorial electrojet
station where the daytime increase of horizontal geomagnetic field (H) is
associated with a simultaneous increase of eastward geomagnetic field (Y).
It is shown that during the counter electrojet period when ∆H is
negative, ∆Y also becomes negative. Thus, the diurnal
variation of ∆Y at equatorial latitudes is suggested to be a
constituent part of the equatorial electrojet current system. Solar flares are
known to increase the H field at an equatorial station during normal
electrojet conditions (nej). At Huancayo, situated north of the magnetic
equator, the solar flare effect, during nej, consists of positive impulses in H
and Y and negative impulse in Z field. During counter electrojet
periods (cej), a solar flare produces a negative impulse in H and Y
and a positive impulse in Z at Huancayo. It is concluded that both the
zonal and meridional components of the equatorial electrojet in American
longitudes, as in Indian longitudes, flows in the same, E region of the
ionosphere.
Key words. Geomagnetism and paleomagnetism (dynamo
theories) · Ionosphere (equatorial ionosphere; ionosphere disturbances) |
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