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| Titel |
Asymmetries in the equatorial electrojet around N-E Brazil sector |
| VerfasserIn |
R. G. Rastogi, N. B. Trivedi |
| 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 ; 27, no. 3 ; Nr. 27, no. 3 (2009-03-12), S.1233-1249 |
| Datensatznummer |
250016452
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| Publikation (Nr.) |
 copernicus.org/angeo-27-1233-2009.pdf |
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| Zusammenfassung |
| The paper examines the data of geographic northward (X), eastward (Y) and
vertical (Z) components of the magnetic field from a dense array of 26
vector magnetometers operated in N-NE Brazil from November 1990 to March
1991. As expected, the daily variation of X showed a minor maximum around
03:00–04:00 LT and a major maximum around 12:00 LT. The daily range of
ΔY showed a strong minimum around noon at all stations. The combined
ΔY and ΔX indicated the direction of the equatorial
electrojet currents to be flowing along 25° north of east at the centre
and 20° north of east at the edges of the equatorial electrojet (EEJ)
belt. The centre of the EEJ as defined by the zero intercept of the Z versus
latitude was found to be near 1.0° S dip latitude. The electrojet
current was stronger in the northern half than in the southern half of the
electrojet belt. These anomalies are suggested to be due to the abnormal
distribution of the mean magnetic field in this region. |
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