Earthquake Waves and the Geomagnetic Dynamo

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Science  10 Aug 1973:
Vol. 181, Issue 4099, pp. 553-554
DOI: 10.1126/science.181.4099.553


It is proposed that earthquake waves energize the geomagnetic dynamo. Fluid motions generated by earthquakes may have enough energy to be in equipartition with fields as large as 100 gauss. Seismic waves from meteoritic impacts with energies sufficient to reverse the field occur every 170,000 years.