Magnetospheric Cold Plasma Diagnostics Using High Altitude GNSS Signals

IF 2.6 2区 地球科学 Q2 ASTRONOMY & ASTROPHYSICS
D. M. Malaspina, P. Axelrad, J. Goldstein, R. Nikoukar, D. Rowland, S. Fantinato, E. Miotti
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引用次数: 0

Abstract

The plasmasphere is a key component of Earth's magnetosphere, regulating numerous energy transfer processes. The plasmasphere is also a cold multi-species plasma. Tracing differences in dynamics between low and high mass cold ions is important for identifying the processes that drive plasmaspheric evolution. At the same time, measurements of cold ion fractional composition within the plasmasphere are sparse and challenging to obtain. Seeking to overcome this challenge, this work presents a novel concept for combining extreme ultraviolet (EUV) photon imaging and Global Navigation Satellite System (GNSS) pseudorange observations to measure cold ion fractional composition throughout the plasmasphere. The feasibility of this concept is demonstrated using a model plasmaspheric density structure combined with known properties of GNSS transmitters and signals. Implementation of this measurement concept on a future space mission has the potential to enable significant new progress understanding processes that drive plasmaspheric and, extension magnetospheric dynamics.

Abstract Image

利用高空GNSS信号进行磁层冷等离子体诊断
等离子层是地球磁层的关键组成部分,调节着许多能量转移过程。等离子层也是一个冷的多物质等离子体。追踪低质量和高质量冷离子之间的动力学差异对于确定驱动等离子体演化的过程是重要的。同时,等离子体层内冷离子分数组成的测量是稀疏的,并且具有挑战性。为了克服这一挑战,本研究提出了一种结合极紫外(EUV)光子成像和全球导航卫星系统(GNSS)伪距观测来测量整个等离子层冷离子分数组成的新概念。利用等离子体密度结构模型结合GNSS发射机和信号的已知特性,证明了这一概念的可行性。在未来的太空任务中实施这一测量概念有可能使理解驱动等离子体层和扩展磁层动力学的过程取得重大的新进展。
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来源期刊
Journal of Geophysical Research: Space Physics
Journal of Geophysical Research: Space Physics Earth and Planetary Sciences-Geophysics
CiteScore
5.30
自引率
35.70%
发文量
570
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