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Quantifying local predictability of the Lorenz system using the nonlinear local Lyapunov exponent

机译:使用非线性局部Lyapunov指数量化Lorenz系统的局部可预测性

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AbstractThe nonlinear local Lyapunov exponent (NLLE) can be used as a quantification of the local predictability limit of chaotic systems. In this study, the phase-spatial structure of the local predictability limit over the Lorenz-63 system is investigated. It is found that the inner and outer rims of each regime of the attractor have a high probability of a longer than average local predictability limit, while the center part is the opposite. However, the distribution of the local predictability limit is nonuniformly organized, with adjacent points sometimes showing quite distinct error growth. The source of local predictability is linked to the local dynamics, which is related to the region in the phase space and the duration on the current regime.
机译:摘要非线性局部Lyapunov指数(NLLE)可用于量化混沌系统的局部可预测性极限。在这项研究中,研究了在Lorenz-63系统上局部可预测性极限的相空间结构。发现吸引子的每个区域的内边缘和外边缘具有比平均局部可预测性极限更长的高概率,而中心部分则相反。但是,局部可预测性极限的分布是不均匀组织的,相邻点有时会显示出非常明显的误差增长。局部可预测性的来源与局部动力学有关,局部动力学与相空间中的区域和当前状态的持续时间有关。

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