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Science 3 April 1970:
Vol. 168. no. 3927, pp. 111 - 114
DOI: 10.1126/science.168.3927.111
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Articles

Geomagnetic Intensity: Changes during the Past 3000 Years in the Western Hemisphere

V. Bucha 1, R. E. Taylor 2, Rainer Berger 2, and E. W. Haury 3

1 Geophysical Institute of Czechoslovak Academy of Science, Prague
2 Department of Anthropology and Institute of Geophysics, University of California, Los Angeles
3 Department of Anthropology, University of Arizona, Tucson

A series of archeomagnetic measurements have been carried out on archeologic materials from Arizona and Mexico which can be compared with results from Europe and Asia. This comparison shows a westward drift of geomagnetic intensity at a rate of about 0.24 degree per year. Furthermore, an apparent coincidence between changes in the earth's magnetic moment and changes in the production rate of radiocarbon is observed.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)