Two-dimension theoretical modeling of ionospheric dynamo and its preliminary application

doi:10.6038/cjg20140501

	Two-dimension theoretical modeling of ionospheric dynamo and its preliminary application
	Yu Tao 1; Mao Tian 1; Wang Yun-Gang 1; Xie Hai-Yong 2; Xia Chun-Liang 3
刊名	CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
	2014-05-01
卷号	57 期号:5 页码:1357-1365
关键词	Ionospheric dynamo Theoretical modeling Sq current system
ISSN号	0001-5733
DOI	10.6038/cjg20140501
文献子类	Article
英文摘要	In the geographic coordinate system, two-dimension theoretical ionospheric dynamo equation has been deduced. After solving this equation with the iteration method, we get the two-dimension current functions. Thereafter the ionospheric current and electric field are derived. Conductivities used in this model are calculated by the theoretical formulas. The parameters of background atmosphere and ionosphere in the formulas are given by external empirical models. Neutral winds and magnetic field are obtained from the HWM93 and IGRF2000 models respectively. This ionospheric theoretical dynamo model satisfactorily gives the shape of global Sq current and the characteristic of ionospheric dynamo electric field. In addition, the effects of altitude variation of winds and geomagnetic field on the simulation results have been investigated. It shows that in the heights from 90 km to 180 km, the result changes little with the altitude variation of magnetic field, but there is a distinct change with the height variation of winds. During the geomagnetic quiet period, we research the patterns of the Sq current foci and the total current intensity. Initial analysis shows that these patterns have a good correlation with the global distribution of geomagnetic field intensity.
WOS关键词	SQ CURRENT SYSTEM ; ATMOSPHERIC SOLAR TIDES ; EQUATORIAL ELECTROJET ; LOW-LATITUDE ; FIELDS ; MIDDLE ; POSITION ; CURRENTS ; FOCUS
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000336701200001
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/85773]
专题	中国科学院地质与地球物理研究所
通讯作者	Yu Tao
作者单位	1.Natl Satellite Meteorol Ctr, CMA, Beijing 100081, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 3.China Univ Geosci, Wuhan 430074, Peoples R China
推荐引用方式 GB/T 7714	Yu Tao,Mao Tian,Wang Yun-Gang,et al. Two-dimension theoretical modeling of ionospheric dynamo and its preliminary application[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2014,57(5):1357-1365.
APA	Yu Tao,Mao Tian,Wang Yun-Gang,Xie Hai-Yong,&Xia Chun-Liang.(2014).Two-dimension theoretical modeling of ionospheric dynamo and its preliminary application.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,57(5),1357-1365.
MLA	Yu Tao,et al."Two-dimension theoretical modeling of ionospheric dynamo and its preliminary application".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 57.5(2014):1357-1365.