Statistical characteristics of the day-to-day variability in the geomagnetic Sq field
文献类型：期刊论文
| 作者 | Chen, Gen-Xiong; Xu, Wen-Yao; Du, Ai-Min; Wu, Ying-Yan; Chen, Bo; Liu, Xiao-Can |
| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
 |
| 出版日期 | 2007-06-16 |
| 卷号 | 112期号:A6 |
| ISSN号 | 0148-0227 |
| DOI | 10.1029/2006JA012059 |
| 文献子类 | Article |
| 英文摘要 | [1] Day-to-day variability in the geomagnetic Sq field is studied by using the magnetic data from a meridian chain of magnetometers along 120 degrees E longitude. The method of natural orthogonal components (NOC or eigenmode analysis) is applied to separate the Sq variation from complicated disturbances. The first eigenmode with the largest eigenvalue represents fairly well the Sq variation with a conspicuous day-to-day variability in the daily range. For the stations on the same north-or south-side of the Sq current system focus, the day-to-day variations show a positive correlation. In contrast, for the stations on the different sides of the Sq focus, they show a negative correlation, suggesting an important role of latitudinal shift of the Sq current system focus to the day-to-day variability in the Sq daily range. The Sq daily range is correlated with the magnetic indices Ap and Dst in a peculiar way: On some severe disturbed days, noticeable enhancements of the Sq are observed, implying increases in the ionospheric conductivities and/or tidal wind velocities; on other severe disturbed days, however, dramatically reduced Sq variations occur, suggesting dominant effects of the "disturbance dynamo'' process. |
| WOS关键词 | SOLAR DAILY VARIATIONS ; CURRENT SYSTEM ; FOCUS ; CURRENTS ; COMPONENTS ; SUBSTORMS ; LATITUDE ; POSITION ; DYNAMO ; TIDES |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000247371700005 |
| 出版者 | AMER GEOPHYSICAL UNION |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/67632]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Chen, Gen-Xiong |
| 作者单位 | Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Gen-Xiong,Xu, Wen-Yao,Du, Ai-Min,et al. Statistical characteristics of the day-to-day variability in the geomagnetic Sq field[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2007,112(A6). |
| APA | Chen, Gen-Xiong,Xu, Wen-Yao,Du, Ai-Min,Wu, Ying-Yan,Chen, Bo,&Liu, Xiao-Can.(2007).Statistical characteristics of the day-to-day variability in the geomagnetic Sq field.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,112(A6). |
| MLA | Chen, Gen-Xiong,et al."Statistical characteristics of the day-to-day variability in the geomagnetic Sq field".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 112.A6(2007). |
入库方式： OAI收割
来源：地质与地球物理研究所
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