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Journal Article

Detection of dynamical regime transitions with lacunarity as a multiscale recurrence quantification measure


Braun,  Tobias
Potsdam Institute for Climate Impact Research;

Unni,  Vishnu
External Organizations;

Sujith,  R.I.
External Organizations;


Kurths,  Jürgen
Potsdam Institute for Climate Impact Research;


Marwan,  Norbert
Potsdam Institute for Climate Impact Research;

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Braun, T., Unni, V., Sujith, R., Kurths, J., Marwan, N. (2021): Detection of dynamical regime transitions with lacunarity as a multiscale recurrence quantification measure. - Nonlinear Dynamics, 104, 4, 3955-3973.

Cite as: https://publications.pik-potsdam.de/pubman/item/item_25379
We propose lacunarity as a novel recurrence quantification measure and illustrate its efficacy to detect dynamical regime transitions which are exhibited by many complex real-world systems. We carry out a recurrence plot based analysis for different paradigmatic systems and nonlinear empirical data in order to demonstrate the ability of our method to detect dynamical transitions ranging across different temporal scales. It succeeds to distinguish states of varying dynamical complexity in the presence of noise and nonstationarity, even when the time series is of short length. In contrast to traditional recurrence quantifiers, no specification of minimal line lengths is required and rather geometric features beyond linear structures in the recurrence plot can be accounted for. This makes lacunarity more broadly applicable as a recurrence quantification measure. Lacunarity is usually interpreted as a measure of heterogeneity or translational invariance of an arbitrary spatial pattern. In application to recurrence plots, it quantifies the degree of heterogenity in the temporal recurrence patterns at all relevant time scales. We demonstrate the potential of the proposed method when applied to empirical data, namely time series of acoustic pressure fluctuations from a turbulent combustor. Recurrence lacunarity captures both the rich variability in dynamical complexity of acoustic pressure fluctuations and shifting time scales encoded in the recurrence plots. Furthermore, it contributes to a better distinction between stable operation and near blowout states of combustors.