Journal of geomagnetism and geoelectricity
Online ISSN : 2185-5765
Print ISSN : 0022-1392
ISSN-L : 0022-1392
Secular Change in the Geomagnetic Field in West Africa for Thirty Years
Comparison with Fourth Generation IGRF Models
J. VASSAL
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1987 Volume 39 Issue 11 Pages 699-707

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Abstract
Comparisons of secular variations computed from geomagnetic reference field models were made against the data obtained at Mbour and Bangui observatories and at 24 magnetic repeat stations in West Africa. The obtained results were very similar between the observatory and the repeat station data, indicating that (1) the TGRF models provide an excellent fit to secular variation data, and (2) there are no significant anomalies in African secular variation.
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