Physics Journal
Articles Information
Physics Journal, Vol.1, No.3, Nov. 2015, Pub. Date: Jan. 16, 2016
Longitudinal Influence of NmF2 Variability on the Equatorial Ionosphere During High Solar Activity
Pages: 388-392 Views: 1029 Downloads: 1068
Authors
[01] Onori E. O., Department of Physics, Lagos State University, Ojo, Lagos, Nigeria.
[02] Somoye E. O., Department of Physics, Lagos State University, Ojo, Lagos, Nigeria.
[03] Ogungbe A. S., Department of Physics, Lagos State University, Ojo, Lagos, Nigeria.
[04] Ogwala A., Department of Physics, Lagos State University, Ojo, Lagos, Nigeria.
Abstract
This paper presents the effect of longitude on the relative variability (VR) of the maximum electron density of the F2 region (NmF2) during High Solar Activity (HSA). Data from six equatorial stations located from west to east of the Greenwich Meridian (GM) are used for this study. Ionospheric stations in the neighbourhood of GM are found to have lowest post-midnight NmF2 VR, while the stations west of GM are found to have the lowest pre-midnight NmF2 VR. Large daytime NmF2 VR is found in stations close to GM. Longitudinal influence is observed in the hour of occurrence of post-midnight peak of NmF2. While post-midnight NmF2 VR in stations close to GM occurred between 05 – 07 hour, post-midnight NmF2 VR of stations east of GM occur earlier that is between 02 – 04 hour. In all six stations considered, the variability of NmF2 is generally greater at Huancayo (78%) and Vanimo (70%) than other stations in the neighbourhood and east of GM due to their longitudinal differences.
Keywords
NmF2 Variability, Equatorial Ionosphere, Longitudinal Influence, Peak Electron Density
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