Can the Earth's dynamo run on heat alone?

  title={Can the Earth's dynamo run on heat alone?},
  author={D. Gubbins and D. Alf{\'e} and G. Masters and G. D. Price and M. Gillan},
  journal={Geophysical Journal International},
SUMMARY The power required to drive the geodynamo places significant constraints on the heat passing across the core‐mantle boundary and the Earth’s thermal history. Calculations to date have been limited by inaccuracies in the properties of liquid iron mixtures at core pressures and temperatures. Here we re-examine the problem of core energetics in the light of new firstprinciples calculations for the properties of liquid iron. There is disagreement on the fate of gravitational energy released… Expand

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