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Chaos and magnetospheric dynamics
1Demokritos Univ. of Thrace, Dept. of Electr. Eng., Division of Telecommunications & Space Science, 67100 Xanthi, Greece
2Demokritos Univ. of Thrace, Dept. of Medicine, Medical Physics Laboratory, 68100 Xanthi, Greece
3Max-Planck-Institut für Aeronomie, 37189 Katlenburg-Lindau, Germany
4National Observatory of Athens, Institute of Ionospheric and Space Research, 11810 Athens, Greece
Abstract. Our intention in this work is to show, by using two different methods, that magnetospheric dynamics reveal low dimensional chaos. In the first method we extend the chaotic analysis for the AE index time series by including singular value decomposition (SVD) analysis in combination with Theiler's test in order to discriminate dynamical chaos from self-affinity or "crinkliness". The estimated fractality of the AE index time series which is obtained belongs to a strange attractor structure with close returns in the reconstructed phase space. In the second method we extend the linear equivalent magnetospheric electric circuit to a nonlinear one, the arithmetic solution of which reveals low dimensional chaotic dynamics. Both methods strongly support the existence of low dimensional magnetospheric chaos.
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Citation: Pavlos, G. P., Diamandidis, D., Adamopoulos, A., Rigas, A. G., Daglis, I. A., and Sarris, E. T.: Chaos and magnetospheric dynamics, Nonlin. Processes Geophys., 1, 124-135, 1994. Bibtex EndNote Reference Manager
