Large-scale traveling ionospheric disturbances observed by GPS total electron content during the magnetic storm of 29-30 October 2003

doi:10.1029/2006JA012013

	Large-scale traveling ionospheric disturbances observed by GPS total electron content during the magnetic storm of 29-30 October 2003
	Ding, F.; Wan, W.; Ning, B.; Wang, M.
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
	2007-06-13
卷号	112 期号:A6
ISSN号	0148-0227
DOI	10.1029/2006JA012013
文献子类	Article
英文摘要	[1] We have investigated the propagation of large-scale traveling ionospheric disturbances (LSTIDs) during the super magnetic storm of 29 - 30 October 2003. Two-dimensional total electron content (TEC) perturbation maps over North America were built using TEC data provided by the American GPS network and the International GNSS Service. Three LSTID events were observed in the range of 30 degrees N - 50 degrees N, 60 degrees W - 110 degrees W during this period. The first two LSTIDs occurred consecutively during 0620 - 0800 UT on 29 October at the local time of midnight, right after the onset of the big substorm; the third one was found at noon during the expansion phase of another substorm on 30 October. The phase fronts of these LSTIDs passed over the United States and traveled southwestward to the distance of similar to 2000 km with the maximum front width of similar to 4000 km and the duration of less than 2 hours. The maximum amplitude of TEC perturbations attained 3 total electron content units (TECUs). The results differ from the former observation of Afraimovich and Voeykov ( 2004) and Afraimovich et al. ( 2006), who reported a solitary LSTID propagating southwestward over the United States with the amplitudes of up to 14 TECU on 30 October 2003. We have checked the magnetic H component observed at the geomagnetic observatories in North America and found it is most likely that the auroral westward electrojet was the cause of the LSTIDs on 29 October. The source region for these TIDs was likely to be located several hundred kilometers north of 50 degrees N. Cross-spectral analysis was conducted to obtain the global propagation characteristics of LSTIDs during this superstorm. Equatorward LSTIDs were found in all the three sectors of North America, Europe, and Asia, showing high correlation with the occurrence of auroral substorms.
WOS关键词	ATMOSPHERIC GRAVITY-WAVES ; GEOMAGNETIC STORM ; SPECTRAL ANALYSIS ; AURORAL ORIGIN ; PROPAGATION ; PERTURBATIONS ; NETWORKS ; RADIO ; MODEL ; ONSET
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	AMER GEOPHYSICAL UNION
WOS记录号	WOS:000247371300002
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/67880]
专题	中国科学院地质与地球物理研究所
通讯作者	Ding, F.
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 2.Chinese Acad Sci, State Key Lab Space Weather, Beijing, Peoples R China 3.Chinese Acad Sci, Wuhan Inst Phys & Math, Wuhan, Peoples R China 4.Chinese Acad Sci, Grad Sch, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Ding, F.,Wan, W.,Ning, B.,et al. Large-scale traveling ionospheric disturbances observed by GPS total electron content during the magnetic storm of 29-30 October 2003[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2007,112(A6).
APA	Ding, F.,Wan, W.,Ning, B.,&Wang, M..(2007).Large-scale traveling ionospheric disturbances observed by GPS total electron content during the magnetic storm of 29-30 October 2003.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,112(A6).
MLA	Ding, F.,et al."Large-scale traveling ionospheric disturbances observed by GPS total electron content during the magnetic storm of 29-30 October 2003".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 112.A6(2007).