• DOI:10.1038/nature16495
Corpus ID: 4451953

Powering Earth’s dynamo with magnesium precipitation from the core

@article{ORourke2016PoweringED,
  title={Powering Earth’s dynamo with magnesium precipitation from the core},
  author={J. O’Rourke and D. Stevenson},
  journal={Nature},
  year={2016},
  volume={529},
  pages={387-389}
}

J. O’Rourke, D. Stevenson

Published 2016

Physics, Medicine

Nature

Earth’s global magnetic field arises from vigorous convection within the liquid outer core. Palaeomagnetic evidence reveals that the geodynamo has operated for at least 3.4 billion years, which places constraints on Earth’s formation and evolution. Available power sources in standard models include compositional convection (driven by the solidifying inner core’s expulsion of light elements), thermal convection (from slow cooling), and perhaps heat from the decay of radioactive isotopes. However… CONTINUE READING

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