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首页> 外文期刊>Journal of Geophysical Research, A. Space Physics: JGR >Effects of the Plasmapause on the Radial Propagation of Fast Magnetosonic Waves: An Analytical Approach
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Effects of the Plasmapause on the Radial Propagation of Fast Magnetosonic Waves: An Analytical Approach

机译：径向上的等离子体层顶的影响快Magnetosonic电波传播:一个分析方法

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摘要

In this study, analytical approximation is used to solve the wave equations near the plasmapause boundary layer in order to examine the validity of ray tracing approach for fast magnetosonic (MS) wave propagations, and then analytical solutions for electromagnetic fields of MS waves through the plasmapause boundary layer are provided for the first time. Both theoretical calculations from the analytical expressions and observations of Van Allen Probes have indicated that electric fields of MS waves decrease rapidly but magnetic fields increase rapidly when propagating across the plasmapause boundary layer from the outside. Considering effects of the plasmapause width and wave frequency, parameter analysis has shown that when the width of the plasmapause boundary layer is narrow in comparison with the wavelength of MS waves, a significant part of waves will be reflected. In these circumstances, the WKB approximation and then ray tracing method might become invalid, and analytical approach provided in this paper could be utilized to solve the wave equation.
机译：在这项研究中,分析近似用于解决等离子体层顶附近的波方程边界层为了检查有效性射线追踪方法的快速magnetosonic(MS)波传播,然后分析解电磁场波女士通过等离子体层顶边界层第一次提供的。从分析表达式和计算范艾伦辐射探测器的观测的电场波女士迅速减少但磁场时迅速增加整个等离子体层顶边界层传播从外面。等离子体层顶宽度和波频率参数分析表明,当的宽度等离子体层顶边界层狭窄与女士波的波长,a海浪将反映的重要组成部分。这种情况下,WKB近似射线追踪方法可能成为无效本文提供的分析方法被利用来解决波动方程。

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