Simultaneous observations of plasmaspheric and ionospheric variations during magnetic storms in 2011: First result from Chinese Meridian Project

	Simultaneous observations of plasmaspheric and ionospheric variations during magnetic storms in 2011: First result from Chinese Meridian Project
	Chi Wang ; Qingmei Zhang ; P. J. Chi ; Chuanqi Li
刊名	Journal of Geophysical Research: Space Physics
	2013
卷号	118 期号:1 页码:99-104
关键词	plasmasphere ionosphere
ISSN号	2169-9402
通讯作者	北京8701信箱
中文摘要	The plasma transport between the plasmasphere and ionosphere during magnetic storms is a long-standing problem and is still not fully understood. Simultaneous observations of the plasmasphere and ionosphere are vital to understand the coupling between the two regions. In this study, using the measurements from the newly developed Chinese ground-based space weather monitoring network (Meridian Project), we investigate the plasmaspheric density at L ≃ 2 inferred from ground magnetometers and the ionospheric electron density inferred by digital ionosondes and GPS signals during magnetic storms in 2011. Five moderate magnetic storms with minimum Dst index between −47 and −103 nT during this period have been investigated. The observations show that the plasmaspheric density drops significantly by more than half of the prestorm value. The ionospheric F2 layer electron density NmF2 and the total electron content (TEC) show ~20–50% decreases, and the NmF2 and TEC reductions take place before the plasmaspheric density reaches its minimum. These findings suggest that the plasmaspheric depletion is very likely due to the reduced plasma supply from the ionosphere for the five moderate magnetic storms in 2011. Therefore, the plasmasphere dynamics seems to be controlled by the ionosphere during magnetic storms.
学科主题	空间物理
语种	英语
内容类型	期刊论文
源URL	[http://ir.cssar.ac.cn/handle/122/1535]
专题	国家空间科学中心_空间科学部
推荐引用方式 GB/T 7714	Chi Wang,Qingmei Zhang,P. J. Chi,et al. Simultaneous observations of plasmaspheric and ionospheric variations during magnetic storms in 2011: First result from Chinese Meridian Project[J]. Journal of Geophysical Research: Space Physics,2013,118(1):99-104.
APA	Chi Wang,Qingmei Zhang,P. J. Chi,&Chuanqi Li.(2013).Simultaneous observations of plasmaspheric and ionospheric variations during magnetic storms in 2011: First result from Chinese Meridian Project.Journal of Geophysical Research: Space Physics,118(1),99-104.
MLA	Chi Wang,et al."Simultaneous observations of plasmaspheric and ionospheric variations during magnetic storms in 2011: First result from Chinese Meridian Project".Journal of Geophysical Research: Space Physics 118.1(2013):99-104.