Characteristics of the ionospheric total electron content of the equatorial ionization anomaly in the Asian-Australian region during 1996-2004

	Characteristics of the ionospheric total electron content of the equatorial ionization anomaly in the Asian-Australian region during 1996-2004
	Zhao, Biqiang 1; Wan, Weixing 1; Liu, Libo 1; Ren, Zhipeng 1,2,3
刊名	ANNALES GEOPHYSICAE
	2009
卷号	27 期号:10 页码:3861-3873
关键词	Geomagnetism and paleomagnetism Spatial variations all harmonics and anomalies Ionosphere Equatorial ionosphere Magnetospheric physics Electric fields
ISSN号	0992-7689
文献子类	Article
英文摘要	Ionospheric total electron content (TEC) of the equatorial ionization anomaly (EIA) is studied by analyzing dual-frequency signals of the Global Position System (GPS) acquired from a network of receivers around the Asian-Australian region during 1996-2004. The latitude, occurrence time, strength of the most developed EIA crest, and crest-to-trough ratio (CTR) for both the noon and post-sunset sector obtained from a daily TEC contour map have been used to study the solar cycle variations of EIA in the Asian-Australian region. The results reveal that semiannual and seasonal variations were the dominant factor that controls the morphology of the EIA structure which can be identified in the past studies (e. g. Wu et al., 2008). It is also found that the latitude and local time position of the anomaly crest show a hemispheric asymmetry because (a) The northern crest of EIA is expanded during the equinox indicating a weak semiannual variation while the southern crest is inhibited during June -August presenting a strong seasonal variation, and (b) The local time of the northern crest appears similar to 1.3 h earlier than that of the southern crest in June while showing no difference at December. Solar activity dependence is more evident in the EIA crest region than in the EIA trough region and least in the post-sunset sector at equinox. A seasonal linear relationship is derived between the post-sunset CTR and solar flux, which should be caused by the solar-dependant equatorial E x B vertical drift.
WOS关键词	GLOBAL POSITIONING SYSTEM ; SOUTH EAST-ASIA ; F-REGION ; LOW LATITUDES ; SEMIANNUAL VARIATIONS ; PLASMA DRIFTS ; SOLAR MAXIMUM ; MINIMUM ; ELECTRODYNAMICS ; DEPENDENCE
WOS研究方向	Astronomy & Astrophysics ; Geology ; Meteorology & Atmospheric Sciences
语种	英语
出版者	COPERNICUS PUBLICATIONS
WOS记录号	WOS:000271356500014
资助机构	National Natural Science Foundation of China(40804041) ; National Natural Science Foundation of China(40804041) ; National Important Basic Research Project(2006CB806306) ; National Important Basic Research Project(2006CB806306) ; National Natural Science Foundation of China(40804041) ; National Natural Science Foundation of China(40804041) ; National Important Basic Research Project(2006CB806306) ; National Important Basic Research Project(2006CB806306) ; National Natural Science Foundation of China(40804041) ; National Natural Science Foundation of China(40804041) ; National Important Basic Research Project(2006CB806306) ; National Important Basic Research Project(2006CB806306) ; National Natural Science Foundation of China(40804041) ; National Natural Science Foundation of China(40804041) ; National Important Basic Research Project(2006CB806306) ; National Important Basic Research Project(2006CB806306)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/71918]
专题	中国科学院地质与地球物理研究所
通讯作者	Zhao, Biqiang
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Beijing Natl Observ Space Environm, Beijing, Peoples R China 2.CAS, Wuhan Inst Phys & Math, Wuhan, Peoples R China 3.Chinese Acad Sci, Grad Sch, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Biqiang,Wan, Weixing,Liu, Libo,et al. Characteristics of the ionospheric total electron content of the equatorial ionization anomaly in the Asian-Australian region during 1996-2004[J]. ANNALES GEOPHYSICAE,2009,27(10):3861-3873.
APA	Zhao, Biqiang,Wan, Weixing,Liu, Libo,&Ren, Zhipeng.(2009).Characteristics of the ionospheric total electron content of the equatorial ionization anomaly in the Asian-Australian region during 1996-2004.ANNALES GEOPHYSICAE,27(10),3861-3873.
MLA	Zhao, Biqiang,et al."Characteristics of the ionospheric total electron content of the equatorial ionization anomaly in the Asian-Australian region during 1996-2004".ANNALES GEOPHYSICAE 27.10(2009):3861-3873.