The origin of the prenoon-postnoon asymmetry for Sq current system

	The origin of the prenoon-postnoon asymmetry for Sq current system
	Zhao Xu-Dong 1,2; Du Ai-Min 1; Xu Wen-Yao 1; Hong Ming-Hua 1; Liu Li-Bo 1; Wei Yong 1,2; Wang Cheng-Gong 1,2
刊名	CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
	2008-05-01
卷号	51 期号:3 页码:643-649
关键词	Sq current system daily variation of Sq DP2 current system S(q)(p)current system
ISSN号	0001-5733
文献子类	Article
英文摘要	The solar quiet variation (Sq) is one typical kind of the variable magnetic field of the Earth. The feature of Sq reflects the structure of electricity and high altitude atmosphere tide in ionosphere. The variation of Sq takes an important role of understanding the process in coupling of ionosphere-thermosphere. It is necessary to separate the Sq correctly from the geomagnetic field in order to estimate the geomagnetic indices (such as the Dst, Kp and AE indices) and forecast the level of geomagnetic activity. In this paper, the geomagnetic field data observed by ground-based observatories are used to analysis the configuration of Sq, the prenoon-postnoon asymmetry, and the daily variations of Sq depended on the latitude and solar zenith. The results indicate that the asymmetry of Sq is resulted from interaction between the current systems in low and high latitude regions.
WOS关键词	TO-DAY VARIABILITY ; ELECTRIC-FIELD ; IONOSPHERE
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	SCIENCE CHINA PRESS
WOS记录号	WOS:000256294600005
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/70168]
专题	中国科学院地质与地球物理研究所
通讯作者	Zhao Xu-Dong
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 2.Grad Univ, Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Zhao Xu-Dong,Du Ai-Min,Xu Wen-Yao,et al. The origin of the prenoon-postnoon asymmetry for Sq current system[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2008,51(3):643-649.
APA	Zhao Xu-Dong.,Du Ai-Min.,Xu Wen-Yao.,Hong Ming-Hua.,Liu Li-Bo.,...&Wang Cheng-Gong.(2008).The origin of the prenoon-postnoon asymmetry for Sq current system.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,51(3),643-649.
MLA	Zhao Xu-Dong,et al."The origin of the prenoon-postnoon asymmetry for Sq current system".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 51.3(2008):643-649.