Variations of geomagnetic H, D, and Z field intensities on quiet days at west african latitudes
In the framework of the French participation to the International Equatorial Electrojet Year (IEEY), a network of ten electro-magnetic stations was installed at African latitudes. These stations measured digitally the three components of the magnetic field and the two components of the telluric...
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| Auteurs principaux: | , |
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| Format: | article |
| Langue: | EN |
| Publié: |
D.Ghitu Institute of Electronic Engineering and Nanotechnologies
2009
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| Accès en ligne: | https://doaj.org/article/a546f963eb194ce592d58f43f7416a0b |
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| Résumé: | In the framework of the French participation to the International Equatorial Electrojet
Year (IEEY), a network of ten electro-magnetic stations was installed at African latitudes.
These stations measured digitally the three components of the magnetic field and the two components of the telluric electric field, and operated over a period of 20 months. The magnetic
data are used to study the variations of geomagnetic H, D, and Z field intensities on quiet days.
Night-time variations in all the three geomagnetic elements were observed, which suggests
there is a night-time current in the West African dip equatorial latitudes. The pattern of variations observed in H element, which peaks around noon, is seen to be due to the equatorial electrojet current. A reverse current called the counter electrojet current was noticed on some days. |
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