Nonlinear multi-cellular fast dynamos

D. W. Hughes; F. Cattaneo; Eun Jin Kim

doi:10.1023/A:1023308804701

Nonlinear multi-cellular fast dynamos

D. W. Hughes, F. Cattaneo, Eun Jin Kim

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

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
Pages (from-to)	328-334
Number of pages	7
Journal	Studia Geophysica et Geodaetica
Volume	42
Issue number	3
DOIs	https://doi.org/10.1023/A:1023308804701
Publication status	Published - 1 Jul 1998
Externally published	Yes

Keywords

Fast dynamos
Mode coupling

ASJC Scopus subject areas

Geophysics
Geochemistry and Petrology

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10.1023/A:1023308804701

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AU - Hughes, D. W.

AU - Cattaneo, F.

AU - Kim, Eun Jin

PY - 1998/7/1

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N2 - 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.

AB - 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.

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KW - Mode coupling

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U2 - 10.1023/A:1023308804701

DO - 10.1023/A:1023308804701

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Nonlinear multi-cellular fast dynamos

Abstract

Keywords

ASJC Scopus subject areas

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