Abstract
We present an index for the local sensitivity of spatiotemporal structures in coupled oscillatory systems based on the properties of local-in-space, finite-time Lyapunov exponents. For a system of nonlocally coupled Rössler oscillators, we show that variations of this index for different oscillators reflect the sensitivity to noise and the onset of spatial chaos for the patterns where coherence and incoherence regions coexist.
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Acknowledgements
This work was supported by the German Research Foundation (DFG) in the framework of the Collaborative Research Center (SFB) 910, Projects A3 and B11. T. E. V. acknowledges support in part from the Russian Ministry of Education and Science (Project Code 3.8616.2017/8.9) (discussion of the numerical results).
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Shepelev, I.A., Bukh, A.V., Ruschel, S. et al. Local sensitivity of spatiotemporal structures. Nonlinear Dyn 94, 1019–1027 (2018). https://doi.org/10.1007/s11071-018-4407-7
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DOI: https://doi.org/10.1007/s11071-018-4407-7