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dynamo theory |
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dynamo theory [′dī·nə‚mō ‚thē·ə·rē] (geophysics) The hypothesis which explains the regular daily variations in the earth's magnetic field in terms of electrical currents in the lower ionosphere, generated by tidal motions of the ionized air across the earth's magnetic field. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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One is that the main dipole field is indeed tilted, which would mean that the dynamo theory needs marked revision to explain the tilts already observed at the planets of the solar system. Because sunspots have been successfullymodeled by a dynamo theory for the sun, Olson suspects that this theory may bear fruit for the earth as well. Either the differential rotation theory or the dynamo theory is wrong, says Gilman. |
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