The plasmapause is the outer boundary of the plasmasphere and plays a crucial role in the propagation of plasma waves. We statistically investigate the relationship between the distribution of banded hiss and plasmapause locations. Wave power distributions of banded hiss are analyzed in terms of two ways: (a) the distance away from the plasmapause (ΔL) and (b) the equatorial distance away from the Earth. Statistical results show both bands of banded hiss have larger wave powers and occurrence rates near the plasmapause. The frequencies of two banded hiss waves both decrease discernably with increasing L-shell at most magnetic local time sectors and geomagnetic activities, but remain nearly constant with increasing ΔL. The highly consistent distribution suggests both bands may be generated in the plume region. The correlation between banded hiss waves and plasmapause locations sheds new light on the generation mechanisms of banded hiss waves.

中文翻译：

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关于带状 Hiss 分布与 Plasmapause 位置之间的关系：Van Allen Probes 观察结果调查


等离子体是等离子体层的外边界，在等离子体波的传播中起着至关重要的作用。我们统计调查了带状嘶嘶声的分布与血浆位置之间的关系。带状嘶嘶声的波功率分布从两种方式进行分析：（a） 距等离子体的距离 （ΔL） 和 （b） 距地球的赤道距离。统计结果表明，带状嘶嘶声的两个波段在血浆附近都具有更大的波功率和发生率。在大多数磁性局部时间扇区和地磁活动中，两个带状嘶嘶声波的频率都随着 L 壳层的增加而明显降低，但随着 ΔL 的增加，其频率几乎保持不变。高度一致的分布表明，两个波段都可能在羽流区域产生。带状 hiss 波和等离子体位置之间的相关性为带状 hiss 波的产生机制提供了新的视角。