We investigate the role of small-scale dynamics in inducing large-scale transitions in the solar wind magnetic field by means of dynamical system metrics based on instantaneous fractal dimensions. By looking at the corresponding multiscale features, we observe a break in the average attractor dimension occurring at the crossover between the inertial and the kinetic/dissipative regime. Our analysis suggests that large-scale transitions are induced by small-scale dynamics through an inverse cascade mechanism driven by local correlations, while electron contributions (if any) are hidden by instrumental noise.

中文翻译：

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太阳风磁场的小尺度诱导大尺度跃迁

我们通过基于瞬时分形维数的动力学系统度量研究了小尺度动力学在引起太阳风磁场大尺度转变中的作用。通过查看相应的多尺度特征，我们观察到在惯性和动力学/耗散状态之间的交叉处发生的平均吸引子尺寸的中断。我们的分析表明，大尺度跃迁是由小尺度动力学通过局部相关性驱动的逆级联机制引起的，而电子贡献（如果有）被仪器噪声隐藏。