标题： 空间等离子体湍流中的非高斯统计，分形特性及陷阱 显示英文标题

标题： Non-Gaussian statistics in space plasma turbulence, fractal properties and pitfalls

摘要： 地球弓形激波附近的磁场涨落已被研究，以表征强等离子体湍流的间歇性行为。 观察到的小尺度间歇性可能是多分形过程的标志，但更深入的检查揭示了这种解释中的问题。 包括波场各向异性、泰勒假设的破坏以及相干波包偶尔出现在内的多种效应，强烈影响了高阶统计特性。 在纠正这些效应后，恢复了一个更接近高斯分布且尺度不变的波场。 显示英文摘要

摘要： Magnetic field fluctuations in the vicinity of the Earth's bow shock have been investigated with the aim to characterize the intermittent behaviour of strong plasma turbulence. The observed small-scale intermittency may be the signature of a multifractal process but a deeper inspection reveals caveats in such an interpretation. Several effects, including the anisotropy of the wavefield, the violation of the Taylor hypothesis and the occasional occurrence of coherent wave packets, strongly affect the higher order statistical properties. After correcting these effects, a more Gaussian and scale-invariant wavefield is recovered.