The effects of plasma density on the plasmaspheric hiss amplitude and its spatial and temporal scale sizes are investigated using data from Van Allen Probes A and B. The plasmaspheric hiss amplitude and scale sizes are found to be more affected by the small-scale density variations than the overall density profile of the plasmasphere. In detail, our results suggest that both the hiss wave amplitude and its scale sizes are (a) related to the total electron density when the density is less than ∼1,000 cm⁻³; (b) independent of the total electron density when the density is greater than ∼1,000 cm⁻³; and (c) better correlated with the detrended density (removing the background plasmasphere density profile from the total electron density) regardless of the density value.

中文翻译：

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等离子体密度对等离子体球希斯时空尺度的影响

使用范艾伦探针 A 和 B 的数据研究了等离子体密度对等离子体层嘶嘶声幅度及其空间和时间尺度的影响。发现等离子体层嘶嘶声幅度和尺度大小更容易受到小尺度密度变化的影响。等离子体层的整体密度分布。详细来说，我们的结果表明，当密度小于~1,000 cm ^-3时，嘶嘶声波的振幅及其尺度大小与总电子密度有关； (b) 当密度大于~1,000 cm ^-3时，与总电子密度无关； (c) 与去趋势密度更好地相关（从总电子密度中去除背景等离子体层密度分布），无论密度值如何。