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Nonlinear multi-cellular fast dynamos



Nonlinear multi-cellular fast dynamos



Studia Geophysica et Geodetica 42(3): 328-334



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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Accession: 019543235

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DOI: 10.1023/a:1023308804701


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