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Planetary Magnetism

Stevenson, David (1974) Planetary Magnetism. Icarus, 22 (4). pp. 403-415. ISSN 0019-1035. doi:10.1016/0019-1035(74)90073-6.

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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 a 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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Stevenson, David0000-0001-9432-7159
Additional Information:© 1974 by Academic Press, Inc. Received February 22, 1974; revised April 4, 1974. I wish to thank Dr. N. W. Ashcroft for suggesting the precession model for Jupiter, Dr. C. Sagan for his helpful comments and critical reading of the first draft; also Dr. E. E. Salpeter, Dr. S. Soter and a referee for some useful comments. This work was supported in part by the National Science Foundation, Grant GP-36425X and the National Aeronautics and Space Administration, Grant NGR-33-010-188.
Group:UNSPECIFIED, UNSPECIFIED, Division of Geological and Planetary Sciences
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Issue or Number:4
Record Number:CaltechAUTHORS:20131113-133854153
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Official Citation:David Stevenson, Planetary magnetism, Icarus, Volume 22, Issue 4, August 1974, Pages 403-415, ISSN 0019-1035, (
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:42430
Deposited By: Ruth Sustaita
Deposited On:13 Nov 2013 22:00
Last Modified:10 Nov 2021 16:23

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