Prompt GPS TEC response to magnetospheric compression

doi:10.1002/2017JA023866

CORC > 北京大学 > 地球与空间科学学院

	Prompt GPS TEC response to magnetospheric compression
	Hao, Yongqiang ; Huang, Jianping ; Liu, Wenlong ; Zhang, Donghe ; Xiao, Zuo
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
	2017
关键词	GLOBAL PLASMASPHERIC TEC INTERPLANETARY SHOCK IONOSPHERIC RESPONSE GEOSTATIONARY ORBIT SUDDEN COMMENCEMENT GEOMAGNETIC STORM SERVICE NETWORK MAGNETIC-FIELD GREAT STORM SATELLITE
DOI	10.1002/2017JA023866
英文摘要	A new type of total electron content (TEC) variation was observed when an interplanetary shock impacted on the Earth's magnetosphere on 17 March 2015. With hundreds of ground-based Global Positioning System (GPS) receivers, instantaneous TEC impulses were detected in the signals from four GPS satellites cruising in the dayside equatorial magnetosphere. Despite the small amplitude (0.3 TECU), the impulses were synchronously registered by receivers spreading from low to middle latitudes on the ground; they lasted for several minutes, during which period the interplanetary magnetic field (IMF) kept northward. The TEC impulses therefore discriminate themselves from usual traveling ionospheric disturbances and exclude possible effects from the southward IMF-driven magnetic storm. We suggest that the TEC variation is caused by shock-induced magnetospheric compression, which moves plasma earthward in the dayside plasmasphere. As a result, some plasma outside of GPS orbit (4.2 RE) is moved to the inside and contributes to the plasma content traversed by GPS raypath. The GPS TEC technique thus exhibits an unprecedented capability to capture small tremor of the magnetosphere, and with the dense receiver network on the ground it can be a feasible tool for remote sensing of the plasma dynamics around 4.2 RE.; NSFC [41574144, 41574154, 41274155, 41274166]; SCI(E); ARTICLE; 4; 4357-4366; 122
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/474181]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	Hao, Yongqiang,Huang, Jianping,Liu, Wenlong,et al. Prompt GPS TEC response to magnetospheric compression[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2017.
APA	Hao, Yongqiang,Huang, Jianping,Liu, Wenlong,Zhang, Donghe,&Xiao, Zuo.(2017).Prompt GPS TEC response to magnetospheric compression.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS.
MLA	Hao, Yongqiang,et al."Prompt GPS TEC response to magnetospheric compression".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS (2017).