Geometrical characteristics of magnetospheric energetic ion time series: evidence for low dimensional chaos

Details Geometrical characteristics of magnetospheric energetic ion time series: evidence for low dimensional chaos Geometrical characteristics of magnetospheric energetic ion time series: evidence for low dimensional chaos

Sep 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003angeo..21.1975p&link_type=abstract

Annales Geophysicae, vol. 21, Issue 9, pp.1975-1993

Physics

1

Scientific paper

In the first part of the paper we study the geometrical characteristics of the magnetospheric ions’ time series in the reconstructed phase space by using the SVD extended chaotic analysis, and we test the strong null hypothesis supposing that the ions’ time series is caused by a linear stochastic process perturbed by a static nonlinear distortion. The SVD reconstructed spectrum of the ions’ signal reveals a strong component of high dimensional, external coloured noise, as well as an internal low dimensional nonlinear deterministic component. Also, the stochastic Lorenz system produced by coloured noise perturbation of the deterministic Lorenz system was used as an archetype model in comparison with the dynamics of the magnetrospheric ions.

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