The search for low-dimensional chaos in ocean surface waves is nowadays a very active field. The interpretation of the results, however, is not always straightforward. The issue addressed in this paper is how time series analysis tools from dynamical systems theory behave for a class of Gaussian processes often used in the study of ocean surface waves. The study includes the largest Lyapunov exponent, the Grassberger and Procaccia correlation dimension and the self-similarity properties. Surprisingly, for certain parameter ranges, the correlation dimension is found to be finite, the largest Lyapunov exponent is found to be positive and structure appears on all time scales. These results suggest that improved techniques and data analysis procedures may be required in order to study chaos properties of ocean surface waves or of other Gaussian processes with similar power spectra.

Chaotic indicators and Gaussian random processes: some surprising results

BERGAMASCO, Laura Maria;SERIO, Marina
1996-01-01

Abstract

The search for low-dimensional chaos in ocean surface waves is nowadays a very active field. The interpretation of the results, however, is not always straightforward. The issue addressed in this paper is how time series analysis tools from dynamical systems theory behave for a class of Gaussian processes often used in the study of ocean surface waves. The study includes the largest Lyapunov exponent, the Grassberger and Procaccia correlation dimension and the self-similarity properties. Surprisingly, for certain parameter ranges, the correlation dimension is found to be finite, the largest Lyapunov exponent is found to be positive and structure appears on all time scales. These results suggest that improved techniques and data analysis procedures may be required in order to study chaos properties of ocean surface waves or of other Gaussian processes with similar power spectra.
1996
4
73
90
LOW-DIMENSIONAL CHAOS; STRANGE ATTRACTORS; FRACTAL DIMENSION; TIME-SERIES; MULTIFRACTAL STRUCTURE; LYAPUNOV EXPONENTS; TRAJECTORIES; COMPETITION; SYSTEMS; MOTION
L. Bergamasco; M. Serio
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/109596
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