A moment equation description of magnetic reversals in the earth
Open Access
- 1 December 1976
- journal article
- research article
- Published by Proceedings of the National Academy of Sciences in Proceedings of the National Academy of Sciences
- Vol. 73 (12), 4297-4301
- https://doi.org/10.1073/pnas.73.12.4297
Abstract
Low order moments of the alpha dynamo equations in a geophysical regime are related to the dependent variables in a reversing disk dynamo. The link suggests that nonperiodic reversal is an intrinsic feature of the alpha dynamo equations provided the forcing is vigorous and the toroidal and poloidal magnetic fields are sufficiently out of phase. The nonuniformities in reversal frequency are then attributable to subcritical instability.Keywords
This publication has 1 reference indexed in Scilit:
- Alignment of the Earth's Magnetic Field with the Axis of Rotation and Reversals of Polarity: Laboratory Experiments on a MechanismProceedings of the National Academy of Sciences, 1974