Profile of strong magnetic field B-y component in magnetotail current sheets
文献类型：期刊论文
| 作者 | Rong, Z. J.; Wan, W. X.; Shen, C.; Li, X.; Dunlop, M. W.; Petrukovich, A. A.; Hau, L. -N.; Zhang, T. L.; Reme, H.; Du, A. M. |
| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
 |
| 出版日期 | 2012 |
| 卷号 | 117页码:A06216 |
| ISSN号 | 2169-9380 |
| 通讯作者 | Rong, ZJ (reprint author), Chinese Acad Sci, Inst Geol & Geophys, Beijing Natl Observ Space Environm, Beijing 100029, Peoples R China. |
| 中文摘要 | The strong magnetic field B-y component (in GSM coordinates) has been increasingly noticed to play an important role in the dynamics of tail current sheet (CS). The distribution profile of strong B-y components in the tail CS (i.e., those with guide field), however, is not well known. In the present work, by using the simultaneous multipoint observations of Cluster satellites, the profile of a strong B-y component in tail current sheets is explored, through detailed case studies, as well as in a statistical study. It is discovered that around the midnight meridian, the strength of the strong B-y component, i.e., |B-y|, is basically enhanced at the center of the CS relative to that in the CS boundaries and lobes and forms a north-south symmetric distribution about the center of CS. Generally, however, for strong guide field cases in the non-midnight meridian, the profile of B-y strength basically becomes north-south asymmetric, the strength of the B-y component in the northern side of the CS is found to be either stronger or weaker than that in the counterpart southern side. By considering the modulation of the tail flaring magnetic field with magnetic local time, we propose an interpretation to account for the variation of the B-y-profile, which is supported by the statistical survey. These results offer an observation basis for further studies. |
| 英文摘要 | The strong magnetic field B-y component (in GSM coordinates) has been increasingly noticed to play an important role in the dynamics of tail current sheet (CS). The distribution profile of strong B-y components in the tail CS (i.e., those with guide field), however, is not well known. In the present work, by using the simultaneous multipoint observations of Cluster satellites, the profile of a strong B-y component in tail current sheets is explored, through detailed case studies, as well as in a statistical study. It is discovered that around the midnight meridian, the strength of the strong B-y component, i.e., |B-y|, is basically enhanced at the center of the CS relative to that in the CS boundaries and lobes and forms a north-south symmetric distribution about the center of CS. Generally, however, for strong guide field cases in the non-midnight meridian, the profile of B-y strength basically becomes north-south asymmetric, the strength of the B-y component in the northern side of the CS is found to be either stronger or weaker than that in the counterpart southern side. By considering the modulation of the tail flaring magnetic field with magnetic local time, we propose an interpretation to account for the variation of the B-y-profile, which is supported by the statistical survey. These results offer an observation basis for further studies. |
| 学科主题 | 空间物理 |
| 资助信息 | Chinese Academy of Sciences [KZZD-EW-01-2]; National Basic Research Program of China (973 Program) [2011CB811404, 2011CB811405]; National Natural Science Foundation of China [41104114, 40974101, 41131066, 41110134]; Specialized Research Fund for State Key Laboratory of Space Weather of the CAS (Chinese Academy of Sciences); China Postdoctoral Science Foundation [20100480446]; Research Fund for the State Key Laboratory of Lithospheric Evolution; CAS [2009S1-54] |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2014-12-15 |
| 源URL | [http://ir.nssc.ac.cn/handle/122/3181]  |
| 专题 | 国家空间科学中心_空间科学部 |
| 推荐引用方式 GB/T 7714 | Rong, Z. J.,Wan, W. X.,Shen, C.,et al. Profile of strong magnetic field B-y component in magnetotail current sheets[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2012,117:A06216. |
| APA | Rong, Z. J..,Wan, W. X..,Shen, C..,Li, X..,Dunlop, M. W..,...&Lucek, E..(2012).Profile of strong magnetic field B-y component in magnetotail current sheets.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,117,A06216. |
| MLA | Rong, Z. J.,et al."Profile of strong magnetic field B-y component in magnetotail current sheets".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 117(2012):A06216. |
入库方式： OAI收割
来源：国家空间科学中心
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