Planetary magnetism |
| |
| Authors: | David Stevenson |
| |
| Institution: | Laboratory of Atomic and Solid State Physics, Cornell University, Ithaca, New York 14850, USA |
| |
| Abstract: | 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 favorabl 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. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
