Variations of the auroral electrojet belt during substorms
文献类型：期刊论文
| 作者 | Xu Wen-Yao |
| 刊名 | CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
 |
| 出版日期 | 2009-03-01 |
| 卷号 | 52期号:3页码:607-615 |
| 关键词 | Auroral electrojet Aurora Particle precipitation Ionospheric conductivity Ionospheric electric field |
| ISSN号 | 0001-5733 |
| 英文摘要 | Both aurora display and auroral electrojet, as the most important manifestations of the energy coupling between the magnetosphere and the ionosphere, are resulted from particle precipitation, and greatly enhanced during substorms. However, they have rather different behaviors and AE-dependences. In this paper, the dynamic characteristics of the auroral electrojet belt are studied by using equivalent current systems deduced from ground-based magnetic records. The results show that the electrojet belt is divided by Harang discontinuity into two parts: the minor eastward electrojet in afternoon sector and the major westward electrojet in midnight-morning sector. The former shifts equatorward when AE increases, just as the auroral oval does; the latter is divided into two sections: the midnight section shifts poleward when AE increases, while the morning section shifts equatorward. A study on physical mechanism responsible for these differences reveals that the principal factor controlling the midnight-morning westward electrojet is ionospheric conductivities, while the principal factor controlling the afternoon eastward electrojet is electric field, instead of conductivities. |
| 语种 | 英语 |
| WOS记录号 | WOS:000265004300003 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/71334]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Xu Wen-Yao |
| 作者单位 | Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu Wen-Yao. Variations of the auroral electrojet belt during substorms[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2009,52(3):607-615. |
| APA | Xu Wen-Yao.(2009).Variations of the auroral electrojet belt during substorms.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,52(3),607-615. |
| MLA | Xu Wen-Yao."Variations of the auroral electrojet belt during substorms".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 52.3(2009):607-615. |
入库方式： OAI收割
来源：地质与地球物理研究所
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