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Ionospheric Scintillation Data Inversion to Characterize the Structures Associated With a Series of Polar Cap Patches
Radio Science ( IF 1.6 ) Pub Date : 2021-06-07 , DOI: 10.1029/2020rs007235
James P. Conroy 1, 2 , Kshitija Deshpande 3 , Bharat Kunduri 2 , Roger H. Varney 4 , Wayne Scales 2 , Amir Zaghloul 2
Affiliation  

In this study, we present the results of an inversion of ionospheric phase scintillation data to characterize the plasma density irregularity parameters for the structures associated with a series of Polar Cap Patches. The parameter estimates obtained during the inversion suggests that the irregularities associated with Polar Cap Patches are predominantly composed of moderately elongated electron density rods aligned with the earth's magnetic field which in some instances are interbedded within sheet and wing like density structures. Analysis of the spatial and temporal distribution of the axial ratio (AXRs), which are the ratios of irregularity elongation parallel and perpendicular to the field, indicates that the measured phase scintillation indices increase roughly proportionally with AXR values for the rods but remain roughly constant for wings and sheets. These findings indicate that while wings and sheets can produce phase fluctuations, it is the apparent existence of rods that mark the occurrence of plasma processes that lead to the formation of field-aligned irregularities that produce phase scintillations which are most significant.

中文翻译:

电离层闪烁数据反演以表征与一系列极帽贴片相关的结构

在这项研究中,我们展示了电离层相位闪烁数据的反演结果,以表征与一系列极帽贴片相关的结构的等离子体密度不规则参数。在反演过程中获得的参数估计表明,与极冠斑块相关的不规则性主要由与地球磁场对齐的适度细长的电子密度棒组成,在某些情况下,它们夹在片状和翼状密度结构中。轴比 (AXR) 的空间和时间分布分析,这是平行和垂直于场的不规则伸长率的比率,表明测得的相位闪烁指数与棒的 AXR 值大致成比例地增加,但对于翼和片保持大致恒定。这些发现表明,虽然翼和片可以产生相位波动,但明显存在的棒标志着等离子体过程的发生,导致形成场对齐不规则,产生最显着的相位闪烁。
更新日期:2021-08-12
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