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Science 15 October 1993:
Vol. 262. no. 5132, pp. 412 - 416
DOI: 10.1126/science.262.5132.412
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Articles

Latest Pleistocene and Holocene Geomagnetic Paleointensity on Hawaii

Edward A. Mankinen 1 and Duane E. Champion 1

1 U. S. Geological Survey, Mail Stop 937, 345 Middlefield Road, Menlo Park, CA 94025

Geomagnetic paleointensity determinations from radiocarbon-dated lava flows on the island of Hawaii provide an estimate of broad trends in paleointensity for Holocene time and offer a glimpse of intensity variations near the end of the last glacial period. When the data from Hawaii are compared with others worldwide, the intensity of the geomagnetic field seems to have been reduced from the Holocene average by about 35 percent between 45,000 and 10,000 years ago. A long-term reduction of this magnitude is compatible with reported increases in the production rate of cosmogenic nuclides during the same interval.

Submitted on June 8, 1993
Accepted on August 18, 1993

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