Geomagnetic Intensity: Changes during the Past 3000 Years in the Western Hemisphere
- PMID: 17838979
- DOI: 10.1126/science.168.3927.111
Geomagnetic Intensity: Changes during the Past 3000 Years in the Western Hemisphere
Abstract
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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