Investigation of chaoticity of electrodynamical phenomena in planetary magnetospheres: Earth and Jupiter compared

Summary form only given. The authors apply a complicated algorithm of chaotic analysis on data observed within the Earth´s and Jupiter´s magnetospheres. The hypothesis of chaos is tested in the case of the two magnetospheres. For this reason, the authors study magnetic field time series and time series of energetic charged particles observed in situ by various spacecraft. The authors estimate both the geometrical (correlation dimension, degrees of freedom, power spectrum, autocorrelation coefficient) and dynamical (Lypunov exponents, mutual information, prediction algorithms) characteristics. The authors use the results of the above estimates in order to decide about low dimensionality, nonlinearity, predictability and chaoticity of the underlying physical processes