Auroral electrojet oval
文献类型：期刊论文
| 作者 | Chen, GX; Xu, WY; Wei, ZG; Ahn, BH; Kamide, Y |
| 刊名 | EARTH PLANETS AND SPACE
 |
| 出版日期 | 2003 |
| 卷号 | 55期号:5页码:255-261 |
| 关键词 | auroral electrojet AE index substorm |
| ISSN号 | 1343-8832 |
| 文献子类 | Article |
| 英文摘要 | The auroral electrojet is enhanced in the polar ionosphere associated with charged particle precipitation and field-aligned currents during substorms. In this paper the geometry of the elctrojet is determined by using the ionospheric equivalent current systems for every 5 minutes during March 18 and 19, 1978. The latitudinal and local time shifts of the oval are examined. Possible relationship of the electrojet oval with expansion of the auroral oval and the field-aligned current belts during substorms are discussed. The electrojet oval in the polar region consists of westward and eastward electrojets, varying with AE index. As the magnetic activity increases, the westward electrojet has distinct latitudinal shifts in different local time sectors: it shifts poleward around the midnight (23:00-03:00 MLT), while moves equatorward in the morning sector (03:00-10:00 MLT) and afternoon sector (20:00-23:00 MLT). The eastward electrojet includes two insulated parts: a higher-latitude part around 80degrees latitude in the nighttime sector (21:00-03:00 MLT) and a lower-latitude part between 60degrees-70degrees latitudes in other local time sectors. As AE index increases, the higher-latitude part of the eastward electrojet expands eastward from 03:00 to 08:00 MLT, while the lower-latitude part shows a equatorward shift in the afternoon sector, which is more or less similar to the westward electrojet. |
| WOS关键词 | FIELD-ALIGNED CURRENTS ; MAGNETOSPHERIC SUBSTORMS ; SIMULATION ; CONVECTION ; INDEXES ; TRIAD |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000183874600005 |
| 出版者 | TERRA SCIENTIFIC PUBL CO |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/78973]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Chen, GX |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 2.Kyungpook Natl Univ, Teachers Coll, Dept Earth Sci, Taegu 702701, South Korea 3.Nagoya Univ, Solar Terr Environm Lab, Aichi 4428507, Japan |
| 推荐引用方式 GB/T 7714 | Chen, GX,Xu, WY,Wei, ZG,et al. Auroral electrojet oval[J]. EARTH PLANETS AND SPACE,2003,55(5):255-261. |
| APA | Chen, GX,Xu, WY,Wei, ZG,Ahn, BH,&Kamide, Y.(2003).Auroral electrojet oval.EARTH PLANETS AND SPACE,55(5),255-261. |
| MLA | Chen, GX,et al."Auroral electrojet oval".EARTH PLANETS AND SPACE 55.5(2003):255-261. |
入库方式： OAI收割
来源：地质与地球物理研究所
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