ANALYSIS OF THE BERYLLIUM-7 ACTIVITY CONCENTRATION DYNAMICS IN THE ATMOSPHERIC ENVIRONMENT TIME SERIES AFTER THE FUKUSHIMA DAIICHI NUCLEAR POWER PLANTS EMERGENCY
Yu. Ya. Bunyakova, Valentin B. Ternovsky, Yu. V. Dubrovskaya, A. V. Ignatenko, А. А. Свинаренко, L. A. Vitavetskaya · Sensor Electronics and Microsystem Technologies · 2017
We present the results of an analysis, modelling a temporal dynamics of the beryllium-7 (caesium-137) activation concentration in the atmospheric environment time series in Austria after the Fukushima Daiichi Nuclear Power Plants emergency accident. As method of studying we use the complex of the earlier developed models and microsystem technologies which are based on an advanced non-linear analysis technique and modern chaos theory and dynamical systems and a chaos theory methods (Correlation integral approach, average mutual information, surrogate data, false nearest neighbours algorithms, the Lyapunov’s exponents and Kolmogorov entropy analysis, nonlinear prediction models etc). As the input data we use the data on the long-term time series and activity size distribution of beryllium-7 (caesium-137) in the atmospheric environment time series in Austria after the Fukushima Nuclear Power Plant. We have listed the data on the topological and dynamical invariants, namely, the correlation, embedding, Kaplan-Yorke dimensions, the Lyapunov’s exponents, Kolmogorov entropy etc and found an availability of the chaos elements in the corresponding Be-7time series. Regarding the caesium-137, we could not get the analogous adequate conclusion for the corresponding time series.