Jm. Polygiannakis et X. Moussas, ON EXPERIMENTAL-EVIDENCE OF CHAOTIC DYNAMICS OVER SHORT-TIME SCALES IN SOLAR-WIND AND COMETARY DATA USING NONLINEAR PREDICTION TECHNIQUES, Solar physics, 151(2), 1994, pp. 341-350
Strong indications of chaotic dynamics underlying in the interplanetar
y and cometary magnetic field fluctuations over short time scales are
identified using HEOS-2 spacecraft (at 1 AU), Pioneer 10 (at 4.8 AU),
Pioneer 11 (at 20 AU) and ICE (Giacobini-Zinner cometary environment)
high-resolution measurements. Other non-chaotic candidate processes, s
uch as linear deterministic models, fractal Brownian motion, and linea
r gaussian stochastic models are rejected at a high confidence level u
sing nonlinear prediction methods. Experimental proofs of phase correl
ations are obtained. Assuming chaotic dynamics, estimations of the Kol
mogorov-Sinai entropy are provided.