期刊
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
卷 368, 期 1916, 页码 1595-1605出版社
ROYAL SOC
DOI: 10.1098/rsta.2009.0250
关键词
dynamo theory; oscillations; magnetic field reversals
资金
- Division Of Physics
- Direct For Mathematical & Physical Scien [923838] Funding Source: National Science Foundation
We present a review of the different models that have been proposed to explain reversals of the magnetic field generated by a turbulent flow of an electrically conducting fluid (fluid dynamos). We then describe a simple mechanism that explains several features observed in palaeomagnetic records of the Earth's magnetic field, in numerical simulations and in a recent dynamo experiment. A similar model can also be used to understand reversals of large-scale flows that often develop on a turbulent background.
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