Abstract
We investigate the kinematic and dynamic dynamos that result when the magnetic field is assumed to be spatially periodic on a scale twice that of the periodicity of the underlying driving velocity, the "CP flow" of Galloway and Proctor (1992). In the kinematic regime four distinct modes are possible; all appear to exhibit fast dynamo action. In the nonlinear regime mode coupling may occur and different saturated states are possible for the same parameter values.
Original language | English |
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Pages (from-to) | 328-334 |
Number of pages | 7 |
Journal | Studia Geophysica et Geodaetica |
Volume | 42 |
Issue number | 3 |
DOIs | |
Publication status | Published - 1 Jul 1998 |
Externally published | Yes |
Keywords
- Fast dynamos
- Mode coupling
ASJC Scopus subject areas
- Geophysics
- Geochemistry and Petrology