ON THE CHAOTIC STRUCTURE OF TIDE ELEVATION IN THE LAGOON OF VENICE

Giovanna Vittori

Abstract


Sea level oscillations related to astronomical and meteorological tides in the Lagoon of Venice are analysed in order to find evidence of a possible chaotic nature of the phenomenon. On the basis of the analysis of the signal spectrum and by considering the values of the correlation dimension and of the largest Lyapunov coefficient of the attractor of the system, it is possible to infer that tidal oscillations inside the Lagoon of Venice are the result of deterministic dynamics, i.e. of a chaotic system characterized by few degrees of freedom. In the second part of the paper, taking advantage of the chaotic nature of the system, Farmer & Sidorowich's (1987) algorithm is used in order to make predictions of the time development of the system.

Keywords


Venice; tide elevation; chaotic structure

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