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题名: Midlatitude Plasma Bubbles Over China and Adjacent Areas During a Magnetic Storm on 8 September 2017
作者: Ercha Aa;Wengeng Huang;Siqing Liu;Aaron Ridley;Shasha Zou;Liqin Shi;Yanhong Chen;Hua Shen;Tianjiao Yuan;Jianyong Li;Tan Wang
作者部门: 空间环境部
通讯作者: Aa, E (reprint author), Chinese Acad Sci, Natl Space Sci Ctr, Beijing, Peoples R China. ; Aa, E (reprint author), Univ Michigan, Dept Climate & Space Sci & Engn, Ann Arbor, MI 48109 USA.
关键词: plasma bubbles ; PPEF ; geomagnetic storm ; midlatitude ionosphere ; TID
刊名: space weather-the international journal of research and applications
ISSN号: 1542-7390
出版日期: 2018
卷号: 16, 期号:3, 页码:321-331
收录类别: SCI
英文摘要: This paper presents observations of postsunset super plasma bubbles over China and adjacent areas during the second main phase of a storm on 8 September 2017. The signatures of the plasma bubbles can be seen or deduced from (1) deep field-aligned total electron content depletions embedded in regional ionospheric maps derived from dense Global Navigation Satellite System networks, (2) significant equatorial and midlatitudinal plasma bite-outs in electron density measurements on board Swarm satellites, and (3) enhancements of ionosonde virtual height and scintillation in local evening associated with strong southward interplanetary magnetic field. The bubbles/depletions covered a broad area mainly within 20°-45°N and 80°-110°E with bifurcated structures and persisted for nearly 5 hr (∼13-18 UT). One prominent feature is that the bubbles extended remarkably along the magnetic field lines in the form of depleted flux tubes, reaching up to midlatitude of around 50°N (magnetic latitude: 45.5°N) that maps to an altitude of 6,600 km over the magnetic equator. The maximum upward drift speed of the bubbles over the magnetic equator was about 700 m/s and gradually decreased with altitude and time. The possible triggering mechanism of the plasma bubbles was estimated to be storm time eastward prompt penetration electric field, while the traveling ionospheric disturbance could play a role in facilitating the latitudinal extension of the depletions.
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.nssc.ac.cn/handle/122/6232
Appears in Collections:空间环境部_期刊论文

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Ercha Aa;Wengeng Huang;Siqing Liu;Aaron Ridley;Shasha Zou;Liqin Shi;Yanhong Chen;Hua Shen;Tianjiao Yuan;Jianyong Li;Tan Wang. Midlatitude Plasma Bubbles Over China and Adjacent Areas During a Magnetic Storm on 8 September 2017[J]. space weather-the international journal of research and applications,2018,16(3):321-331.
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