The origin of the prenoon-postnoon asymmetry for Sq current system | |
Zhao Xu-Dong1,2; Du Ai-Min1; Xu Wen-Yao1; Hong Ming-Hua1; Liu Li-Bo1; Wei Yong1,2; Wang Cheng-Gong1,2 | |
刊名 | CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
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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. |
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