The effect of geomagnetic activity on the F2 region over Central Africa

Rastogi, R. G. (1962) The effect of geomagnetic activity on the F2 region over Central Africa Journal of Geophysical Research, 67 (4). pp. 1367-1374. ISSN 0148-0227

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This article describes the variations of ƒoF2 at stations in central Africa, where the geomagnetic and magnetic equators are greatly separated from each other. At Lwiro and Léopoldville (geomagnetic latitude Φ=3-4°S, magnetic latitude μ=16-18°S), the diurnal variations of ƒoF2 show a single and strong maximum in the afternoon hours. The seasonal variation of noon h'F2 at these stations has one single maximum during local summer. An increase of magnetic activity causes a decrease of the daytime values of ƒoF2 during local summer months, but it increases the same during local winter months. The storm-time variations of ƒoF2 at these stations show a short initial increase with the start of the magnetic storm followed by a large decrease on the second day of the storm. These properties of ƒoF2 are very similar to those observed at temperate latitude stations. The variations of ƒoF2 at Djibouti (Φ =: 7°N, μ=3°N) and Ibadan (Φ=11°N, μ=3°S) are very different from those at Lwiro or Léopoldville and are of the equatorial type. It is concluded that the variations of ƒoF2 at low and medium latitudes are determined by the magnetic and not by the geomagnetic latitude of the station.

Item Type:Article
Source:Copyright of this article belongs to American Geophysical Union.
ID Code:45861
Deposited On:29 Jun 2011 06:35
Last Modified:29 Jun 2011 06:35

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