Please use this identifier to cite or link to this item: http://hdl.handle.net/2248/4555
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dc.contributor.authorAnanthakrishnan, R-
dc.date.accessioned2009-06-16T16:19:10Z-
dc.date.available2009-06-16T16:19:10Z-
dc.date.issued1953-11-
dc.identifier.citationNature, Vol. 172, No. 4384, pp. 854 – 855en
dc.identifier.issn0028-0836-
dc.identifier.urihttp://hdl.handle.net/2248/4555-
dc.descriptionRestricted Access-
dc.description.abstractIt is well known that the daily international magnetic character figure Ci constitutes a valuable index for classifying days according to their magnetic activity averaged over a large part of the earth. As a measure of the intensity of geomagnetic disturbance, Ci is in fact comparable to the Zurich relative sunspot number S, which is a recognized measure of solar activity. Daily Ci values are available in an unbroken sequence from 1884 onwards.en
dc.language.isoenen
dc.publisherNature Publishing Groupen
dc.relation.urihttp://www.nature.com/doifinder/10.1038/172854a0en
dc.subjectGeomagnetic Activityen
dc.subjectSunspot Cycleen
dc.titleGeomagnetic activity and the sunspot cycleen
dc.typeArticleen
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