A new deterministic model for chaotic reversals |
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Authors: | C. Gissinger |
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Affiliation: | 1.Department of Astrophysical Sciences/Princeton Plasma Physics Lab,Princeton University,Princeton,USA |
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Abstract: | We present a new chaotic system of three coupled ordinary differential equations, limited to quadratic nonlinear terms. A wide variety of dynamical regimes are reported. For some parameters, chaotic reversals of the amplitudes are produced by crisis-induced intermittency, following a mechanism different from what is generally observed in similar deterministic models. Despite its simplicity, this system therefore generates a rich dynamics, able to model more complex physical systems. In particular, a comparison with reversals of the magnetic field of the Earth shows a surprisingly good agreement, and highlights the relevance of deterministic chaos to describe geomagnetic field dynamics. |
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