在极端地磁风暴期间,热层风和成分变化的观测证据以及在欧洲扇区产生的电离层扰动

IF 4.3 3区 材料科学 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC
Jeongheon Kim, Young-Sil Kwak, Changsup Lee, Jaewook Lee, Hosik Kam, Tae-Yong Yang, Geonhwa Jee, YongHa Kim
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引用次数: 0

摘要

在2021年11月1日和2日,太阳发生了四次日冕物质抛射,向行星际空间释放了数十亿吨的高能粒子。这些都指向地球,并于2021年11月3日和4日到达我们的星球,产生了自第25个太阳周期开始以来的第一次g3级极端地磁风暴。本研究利用Fabry-Perot干涉仪、电离层连接探测器/迈克尔逊全球高分辨率热层成像干涉仪(ICON/ might)和热层电离层中间层能量动力学/全球紫外成像仪(TIMED/GUVI)的多种观测数据,研究了欧洲地区热层和电离层对g3级风暴的响应。结果表明,欧洲中低纬度地区的正电离层风暴可能与极地加热引起的赤道和西向中性风有关。相反,在高纬度地区探测到的负风暴与热层密度(上升流)的增加有关。这两种相反的响应通过分布在广泛纬度范围内的欧洲离子探空仪和总电子含量(TEC)观测链得到证实。最后,我们第一次试图确定这两种反应之间的假想界线。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Observational evidence of thermospheric wind and composition changes and the resulting ionospheric disturbances in the European sector during extreme geomagnetic storms
On November 1st and 2nd, 2021, four Halo coronal mass ejections were ejected from the Sun, releasing billions of tons of high-energy particles into interplanetary space. These were directed towards the Earth and reached our planet on November 3rd and 4th, 2021, generating the first G3-level extreme geomagnetic storm since the beginning of the 25th solar cycle. In this study, we investigate the thermospheric and ionospheric responses in the European sector to a G3-level storm using various observational data from Fabry-Perot interferometer, Ionospheric Connection Explorer/Michelson Interferometer for Global High-resolution Thermospheric Imaging (ICON/MIGHTI), and Thermosphere Ionosphere Mesosphere Energetics and Dynamics/Global Ultraviolet Imager (TIMED/GUVI). The results show positive ionospheric storms in the middle and low latitudes of Europe which may be associated with the equatorward and westward neutral winds induced by heating in the polar region. In contrast, negative storms were detected at high latitudes in association with the increase in thermospheric density (upwelling). These two antithetical responses were confirmed by using European ionosonde and total electron contents (TEC) observation chains distributed over a wide range of latitudes. Finally, we, for the first time, attempt to identify the imaginary boundary line between the two responses.
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来源期刊
CiteScore
7.20
自引率
4.30%
发文量
567
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