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Equatorial plasma bubbles developing around sunrise observed by an all-sky imager and global navigation satellite system network during storm time

文献类型：期刊论文

作者Wu, Kun3,4; Xu, Jiyao3,4; Yue, Xinan2,4; Xiong, Chao5; Wang, Wenbin6; Yuan, Wei3,4; Wang, Chi3,4; Zhu, Yajun1,3; Luo, Ji3,4
刊名ANNALES GEOPHYSICAE
出版日期2020-02-05
卷号38期号:1页码:163-177
ISSN号0992-7689
DOI10.5194/angeo-38-163-2020
英文摘要A large number of studies have shown that equatorial plasma bubbles (EPBs) occur mainly after sunset, and they usually drift eastward. However, in this paper, an unusual EPB event was simultaneously observed by an all-sky imager and the global navigation satellite system (GNSS) network in southern China, during the recovery phase of a geomagnetic storm that happened on 6-8 November 2015. Observations from both techniques show that the EPBs appeared near dawn. Interestingly, the observational results show that the EPBs continued to develop after sunrise, and they disappeared about 1 h after sunrise. The development stage of EPBs lasted for at least about 3 h. To our knowledge, this is the first time that the evolution of EPBs developing around sunrise was observed by an all-sky imager and the GNSS network. Our observation showed that the EPBs drifted westward, which was different from the usual eastward drifts of post-sunset EPBs. The simulation from the Thermosphere-Ionosphere-Electrodynamics General Circulation Model (TIE-GCM) suggest that the westward drift of EPBs should be related to the enhanced westward winds at storm time. Besides this, bifurcation and merging processes of EPBs were observed by the all-sky imager in the event. Associated with the development of EPBs, an increase in the peak height of the ionospheric F region was also observed near sunrise, and we suggest the enhanced upward vertical plasma drift during the geomagnetic storm plays a major role in triggering the EPBs near sunrise.
WOS关键词ZONAL DRIFT ; ADJACENT AREAS ; IRREGULARITIES ; ENHANCEMENTS ; IONOSPHERE ; DEPENDENCE ; EVOLUTION ; DYNAMICS ; VELOCITY ; CHAMP
资助项目National Natural Science Foundation of China[41831073] ; National Natural Science Foundation of China[41674152]
WOS研究方向Astronomy & Astrophysics ; Geology ; Meteorology & Atmospheric Sciences
语种英语
WOS记录号WOS:000512998000001
出版者COPERNICUS GESELLSCHAFT MBH
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
源URL[http://ir.iggcas.ac.cn/handle/132A11/95686]  
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Xu, Jiyao
作者单位1.Forschungszentrum Julich, Inst Energy & Climate Res IEK 7, Julich, Germany
2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing, Peoples R China
3.Chinese Acad Sci, Natl Space Sci Ctr, State Key Lab Space Weather, Beijing, Peoples R China
4.Univ Chinese Acad Sci, Coll Earth Sci, Beijing, Peoples R China
5.GFZ German Res Ctr Geosci, D-14473 Potsdam, Germany
6.Natl Ctr Atmospher Res, High Altitude Observ, Pob 3000, Boulder, CO 80307 USA
推荐引用方式
GB/T 7714		 Wu, Kun,Xu, Jiyao,Yue, Xinan,et al. Equatorial plasma bubbles developing around sunrise observed by an all-sky imager and global navigation satellite system network during storm time[J]. ANNALES GEOPHYSICAE,2020,38(1):163-177.
APA Wu, Kun.,Xu, Jiyao.,Yue, Xinan.,Xiong, Chao.,Wang, Wenbin.,...&Luo, Ji.(2020).Equatorial plasma bubbles developing around sunrise observed by an all-sky imager and global navigation satellite system network during storm time.ANNALES GEOPHYSICAE,38(1),163-177.
MLA Wu, Kun,et al."Equatorial plasma bubbles developing around sunrise observed by an all-sky imager and global navigation satellite system network during storm time".ANNALES GEOPHYSICAE 38.1(2020):163-177.

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来源：地质与地球物理研究所

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