Aug 1974
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974icar...22..403s&link_type=abstract
Icarus, vol. 22, Aug. 1974, p. 403-415.
Physics
17
Dynamo Theory, Paleomagnetism, Planetary Magnetic Fields, Thermoelectricity, Hall Effect, Jupiter (Planet), Neptune (Planet), Precession, Saturn (Planet)
Scientific paper
The origin and maintenance of planetary magnetic fields are discussed. The discussion is not limited to dynamo theories, although these are almost universally favored. Thermoelectric currents are found to be a possible alternative for Jupiter. Two energy sources for dynamos are considered: convection and precessionally induced fluid flow. The earth is the most favorable planet for precessionally driven dynamo, although Neptune is a possibility. Jupiter is likely to have a convectionally driven dynamo, as may Saturn, but the relevant properties of Saturn are not yet well known. Conclusions for each planet are given.
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