Table of Contents
ISRN Geophysics
Volume 2013, Article ID 909258, 7 pages
Research Article

Day-to-Day Variability of H and Z Components of the Geomagnetic Field at the African Longitudes

1Department of Physics and Industrial Physics, Nnamdi Azikiwe University, P.M.B. 5025, Awka, Nigeria
2Industrial Physics Department, Ebonyi State University, P.M.B. 053, Abakaliki, Nigeria

Received 21 June 2013; Accepted 17 July 2013

Academic Editors: G. Mele, F. Monteiro Santos, and A. Streltsov

Copyright © 2013 T. N. Obiekezie et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The Day-to-day variability of the geomagnetic field elements at the African longitudes has been studied for the year 1987 using geomagnetic data obtained from four different African observatories. The analysis was carried out on solar quiet days using hourly values of the Horizontal, , and vertical, , geomagnetic field values. The results of this study confirm that Sq is a very changeable phenomenon, with a strong day-to-day variation. This day-to-day variation is seen to be superimposed on magnetic disturbances of a magnetospheric origin.