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10Be evidence for the Matuyama–Brunhes geomagnetic reversal in the EPICA Dome C ice core

Overview of attention for article published in Nature, November 2006
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Title
10Be evidence for the Matuyama–Brunhes geomagnetic reversal in the EPICA Dome C ice core
Published in
Nature, November 2006
DOI 10.1038/nature05266
Pubmed ID
Authors

G. M. Raisbeck, F. Yiou, O. Cattani, J. Jouzel

Abstract

An ice core drilled at Dome C, Antarctica, is the oldest ice core so far retrieved. On the basis of ice flow modelling and a comparison between the deuterium signal in the ice with climate records from marine sediment cores, the ice at a depth of 3,190 m in the Dome C core is believed to have been deposited around 800,000 years ago, offering a rare opportunity to study climatic and environmental conditions over this time period. However, an independent determination of this age is important because the deuterium profile below a depth of 3,190 m depth does not show the expected correlation with the marine record. Here we present evidence for enhanced 10Be deposition in the ice at 3,160-3,170 m, which we interpret as a result of the low dipole field strength during the Matuyama-Brunhes geomagnetic reversal, which occurred about 780,000 years ago. If correct, this provides a crucial tie point between ice cores, marine cores and a radiometric timescale.

Mendeley readers

The data shown below were compiled from readership statistics for 90 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
United States 3 3%
Germany 2 2%
Italy 1 1%
Netherlands 1 1%
Canada 1 1%
Unknown 82 91%

Demographic breakdown

Readers by professional status Count As %
Researcher 31 34%
Student > Ph. D. Student 13 14%
Professor 8 9%
Lecturer 7 8%
Student > Master 6 7%
Other 25 28%
Readers by discipline Count As %
Earth and Planetary Sciences 61 68%
Physics and Astronomy 8 9%
Environmental Science 7 8%
Unspecified 5 6%
Arts and Humanities 3 3%
Other 6 7%