Gyre-driven decay of the Earth’s magnetic dipole
Christopher C. Finlay, Julien Aubert, Nicolas Gillet
Nature Communications · 2016
doi:10.1038/ncomms10422 (opens in a new tab)
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Abstract
The magnitude of the Earth’s magnetic dipole has decreased by 9% over the past 175 years. Here, the authors suggest that the rate of dipole decay is controlled by a huge gyre in the liquid metal outer core acting on a field asymmetry, and that decay is set to continue for the next few decades.
Abstract licence: CC BY-NC-ND
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