Responses of equatorial anomaly to the October-November 2003 superstorms
文献类型：期刊论文
| 作者 | Zhao, B; Wan, W; Liu, L |
| 刊名 | ANNALES GEOPHYSICAE
 |
| 出版日期 | 2005 |
| 卷号 | 23期号:3页码:693-706 |
| 关键词 | Ionosphere Equatorial Ionosphere Ionospheremagnetosphere Interactions Ionospheric Disturbances |
| ISSN号 | 0992-7689 |
| 文献子类 | Article |
| 英文摘要 | The responses of Equatorial Ionization Anomaly (EIA) to the superstorms of October- November 2003 were investigated using the total electron content (TEC) measured with global positioning system (GPS) receivers in China, Southeast Asia, Australian (CSAA), and the American regions. Enhanced EIA was seen to be correlated with the southward turning of the interplanetary magnetic field B, In both the CSAA and American regions, EIA was intensified, corresponding to a large increase in the F-layer peak height (hmF2) measured by ionosonde and digisonde at middle and equatorial latitudes. However, the enhanced EIA was shown to be more significant during the daytime in the American region, which was associated with a series of large substorms when B, was stable southward. The prompt penetration electric field and the wind disturbances dynamo electric field are suggested to be responsible for this observation according to current theory, although some features cannot be totally decipherable. Both the ionogram and magnetometer data show the existence of a weak shielding effect whose effect still needs further study. A clear asymmetric ionospheric response was shown in our TEC observations, even though it was only one month after autumnal equinox. The southern EIA crest was totally obliterated on 29 and 30 October in the CSAA region and on 31 October in the American region. Ion temperatures from the Defense Meteorological Satellite Program (DMSP) spacecraft revealed that the unequal energy injection at the polar region might be the reason for this effect. It is concluded that different physical processes have varying degrees of importance on the evolution of EIA in the CSAA and American regions. |
| WOS关键词 | MAGNETICALLY DISTURBED CONDITIONS ; IONOSPHERIC ELECTRIC-FIELDS ; GEOMAGNETIC STORMS ; F-REGION ; ADDITIONAL LAYER ; MAGNETOSPHERIC SUBSTORMS ; PLASMA FOUNTAIN ; LOW LATITUDES ; DYNAMO ; F2-LAYER |
| WOS研究方向 | Astronomy & Astrophysics ; Geology ; Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000229073000006 |
| 出版者 | EUROPEAN GEOSCIENCES UNION |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/65278]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Zhao, B |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 2.Wuhan Inst Phys & Math, CAS, Wuhan 430071, Peoples R China 3.Chinese Acad Sci, Grad Sch, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhao, B,Wan, W,Liu, L. Responses of equatorial anomaly to the October-November 2003 superstorms[J]. ANNALES GEOPHYSICAE,2005,23(3):693-706. |
| APA | Zhao, B,Wan, W,&Liu, L.(2005).Responses of equatorial anomaly to the October-November 2003 superstorms.ANNALES GEOPHYSICAE,23(3),693-706. |
| MLA | Zhao, B,et al."Responses of equatorial anomaly to the October-November 2003 superstorms".ANNALES GEOPHYSICAE 23.3(2005):693-706. |
入库方式： OAI收割
来源：地质与地球物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。