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  4. 中国科学院地球与行星物理重点实验室
The High-Latitude Trough in the Southern Hemisphere Observed by Swarm-A Satellite

文献类型：期刊论文

作者Yang, Na5,6; Yu, Tao6; Le, Huijun1,2,3,4; Liu, Libo1,2,3,4; Sun, Yang-Yi6; Xia, Chunliang6; Zuo, Xiaomin6; Yan, Xiangxiang6; Wang, Jin6
刊名JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
出版日期2019-11-16
页码11
关键词high-latitude trough downward FACs ion drift velocity convection reversal boundary
ISSN号2169-9380
DOI10.1029/2019JA027169
英文摘要Based on the electron density, field-aligned currents (FACs) and ion drift velocity data from the Swarm-A satellite during 2013-2018, we investigate the features of the high-latitude trough in the Southern Hemisphere. The results show that the high-latitude trough in the Southern Hemisphere is a persistent postmidnight feature in winter. It is observed mainly in the eastern longitudes under low solar activity conditions and in a smaller longitudinal range under high solar activity conditions. The high-latitude trough moves to higher latitudes at later local times, which is more obvious under low solar activity conditions. We also find that the features of FACs and ion drift velocity distribution in the high-latitude trough region depend on longitude. In the longitude sector of 0 degrees-70 degrees E, the high-latitude trough positions are always located at the poleward boundary of the downward FAC region, and collocated with the convection reversal boundary in the postmidnight region. In the longitude sector of 80 degrees-130 degrees E, the high-latitude trough positions are located at the poleward boundary of the downward FAC region in the midnight region and at the strong westward or antisunward ion flow region in the postmidnight region. It is suggested that the high-latitude trough formation and evolution is possibly associated with downward FACs, flow stagnation in the convection reversal boundary, and westward or antisunward ion flow.
WOS关键词FIELD-ALIGNED CURRENTS ; WINTER F-REGION ; MIDLATITUDE TROUGH ; IONOSPHERIC TROUGH ; IONIZATION TROUGHS ; ELECTRIC-FIELDS ; ION DRIFT ; CONVECTION ; ELECTRODYNAMICS ; MODEL
资助项目National Natural Science Foundation of China[41574147] ; National Natural Science Foundation of China[41904142] ; National Natural Science Foundation of China[41822403] ; National Natural Science Foundation of China[41774165] ; National Natural Science Foundation of China[41621063] ; National Natural Science Foundation of China[41774161] ; National Natural Science Foundation of China[41604135] ; China Postdoctoral Science Foundation[1231811] ; Youth Innovation Promotion Association CAS ; Key Laboratory of Space Weather
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:000496692700001
出版者AMER GEOPHYSICAL UNION
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; Key Laboratory of Space Weather ; Key Laboratory of Space Weather ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; Key Laboratory of Space Weather ; Key Laboratory of Space Weather ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; Key Laboratory of Space Weather ; Key Laboratory of Space Weather ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; Key Laboratory of Space Weather ; Key Laboratory of Space Weather
源URL[http://ir.iggcas.ac.cn/handle/132A11/95739]  
专题地质与地球物理研究所_中国科学院地球与行星物理重点实验室
通讯作者Yu, Tao
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Beijing Natl Observ Space Environm, Beijing, Peoples R China
2.Univ Chinese Acad Sci, Beijing, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing, Peoples R China
4.Chinese Acad Sci, Inst Earth Sci, Beijing, Peoples R China
5.China Meteorol Adm, Key Lab Space Weather, Natl Ctr Space Weather, Beijing, Peoples R China
6.China Univ Geosci, Inst Geophys & Geomat, Hubei Subsurface Multiscale Imaging Key Lab, Wuhan, Hubei, Peoples R China
推荐引用方式
GB/T 7714		 Yang, Na,Yu, Tao,Le, Huijun,et al. The High-Latitude Trough in the Southern Hemisphere Observed by Swarm-A Satellite[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2019:11.
APA Yang, Na.,Yu, Tao.,Le, Huijun.,Liu, Libo.,Sun, Yang-Yi.,...&Wang, Jin.(2019).The High-Latitude Trough in the Southern Hemisphere Observed by Swarm-A Satellite.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,11.
MLA Yang, Na,et al."The High-Latitude Trough in the Southern Hemisphere Observed by Swarm-A Satellite".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS (2019):11.

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来源：地质与地球物理研究所

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