等离子层,或内磁层是地球的磁层中包含低能量(冷)等离子的区域,它的位置在电离层之上,等离子层外面的边界被称为等离子层顶,在定义上该处的等离子密度已经降低了一个数量级。

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等离子层是1963年唐·卡彭特(Don Carpenter)在分析VLF啸声干扰英语Whistler (radio)波的资料时发现的。

传统上,等离子层被认为是行为受到地磁良好控制,并伴随着地球自转的低温等离子微粒。然而,最近的人造卫星观测显示出密度的不规则性,会形成羽毛状或biteouts;它也显示等离子层不会永远随着地球自转。

相关条目

参考资料

  • Carpenter, D. L., Whistler evidence of a 'knee' in the magnetospheric ionization density profile, J. Geophys. Res., 68, 1675-1682, 1963.
  • Nishida, A., Formation of plasmapause, or magnetospheric plasma knee, by combined action of magnetospheric convections and plasma escape from the tail, J. Geophys. Res., 71, 5669, 1966.
  • Sandel, B. R., et al., Extreme ultraviolet imager observations of the structure and dynamics of the plasmasphere, Space Sci. Rev., 109, 25, 2003.

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