Journal of geomagnetism and geoelectricity
Online ISSN : 2185-5765
Print ISSN : 0022-1392
ISSN-L : 0022-1392
Geomagnetic Secular Variation Revealed in the Baked Earths in West Japan (part 2) Change of the Field Intensity
Sadao SASAJIMA
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1965 Volume 17 Issue 3-4 Pages 413-416

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Abstract

The Thelliers' method of estimating the ancient geomagnetic field intensity was undertaken with some of the samples whose direction of NRM was reported in Part 1 of the paper. The results indicate that the intensity of geomagnetic field about 2, 000 years ago had the maximum value, being 1.5 times as large as that at present. The results also show a fairly good agreement with those reported by several authors such as Thelliers, Burlatskaya, and Nagata et al.

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