电离层等离子体峰值密度厚度的特征:单站点多仪器研究

IF 1.6 4区 地球科学 Q3 ASTRONOMY & ASTROPHYSICS
Radio Science Pub Date : 2024-01-01 DOI:10.1029/2023RS007658
Mohamed O. Shammat;Bodo W. Reinisch;Ivan Galkin;Philip J. Erickson;Jay A. Weitzen;William C. Rideout
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引用次数: 0

摘要

本文介绍了峰值密度厚度(PDT)形式,这是表示电离层中 F2 层垂直电子密度剖面的一种新方法。它有别于传统的 "尖峰 "模型,提出了一种 "宽峰 "或 "平鼻 "剖面,等离子体密度在高度区间 χ 内保持恒定。这一理论得到了独立观测数据的支持,其中包括麻省理工学院 Haystack 观测站 Millstone Hill 非相干散射雷达的综合数据集,时间跨度从 1993 年到 2023 年,这些数据说明了 PDT 的存在和昼夜变化。利用 Digisonde 便携式探测仪 DPS4D 对次峰值电离层进行的单日密集交叉验证表明,χ 间隔下边界和峰值密度的测量结果非常一致。这项研究建议将平鼻剖面 χ 纳入 F 区域剖面形式。这种转变可以提高地面电离层测量得出的顶部规格的准确性,加强我们对电离层等离子体动力学的了解。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Characterizing plasma peak density thickness in the ionosphere: A single-site multi-instrument study
This paper introduces the Peak Density Thickness (PDT) formalism, a novel approach to representing the F2 layer's vertical electron density profile in the ionosphere. It diverges from the conventional “pointed-peak” model by suggesting a “broad-peak” or “flat-nose” profile where plasma density remains constant within an altitude interval χ. This theory is backed by independent observations, including a comprehensive data set from the Millstone Hill Incoherent Scatter Radar at the MIT Haystack observatory, spanning from 1993 to 2023, which illustrates the presence and diurnal variation of PDT. A single-day intensive cross-verification using Digisonde Portable Sounder DPS4D soundings of the sub-peak ionosphere has shown remarkable agreement in the measurements of the lower boundary of the χ interval and the peak density. This study suggests incorporating the flat-nose section χ into the F-region profile formalism. Such a shift could improve the accuracy of topside specifications derived from ground-based ionosonde measurements, enhancing our understanding of ionospheric plasma dynamics.
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来源期刊
Radio Science
Radio Science 工程技术-地球化学与地球物理
CiteScore
3.30
自引率
12.50%
发文量
112
审稿时长
1 months
期刊介绍: Radio Science (RDS) publishes original scientific contributions on radio-frequency electromagnetic-propagation and its applications. Contributions covering measurement, modelling, prediction and forecasting techniques pertinent to fields and waves - including antennas, signals and systems, the terrestrial and space environment and radio propagation problems in radio astronomy - are welcome. Contributions may address propagation through, interaction with, and remote sensing of structures, geophysical media, plasmas, and materials, as well as the application of radio frequency electromagnetic techniques to remote sensing of the Earth and other bodies in the solar system.
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