Observations and analysis of geomagnetic field variations near the magnetic equator
In 1961 a magnetic observatory was established at Freetown, Sierra Leone (13º 13'W, 8º 28'N) just north of the dip equator. Records for H, D and Z for the period July 1961 to June 1965, covering the recent minimum in sunspot activity, have been analysed by the method due to Chapman and Mil...
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Durham University
1969
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| Online Access: | http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.585911 |