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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Sadao Sasajima (1965) studied this question.
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