Observations of kinetic Alfven waves by THEMIS near a substorm onset
文献类型：期刊论文
| 作者 | Duan SuPing; Liu ZhenXing; Angelopoulos, Vassilis |
| 刊名 | CHINESE SCIENCE BULLETIN
 |
| 出版日期 | 2012 |
| 卷号 | 57期号:12页码:1429-1435 |
| 关键词 | kinetic Alfven wave near-Earth plasma sheet substorm onset |
| ISSN号 | 1001-6538 |
| 通讯作者 | Duan, SP (reprint author), Chinese Acad Sci, Ctr Space Sci & Appl Res, State Key Lab Space Weather, Beijing 100190, Peoples R China. |
| 中文摘要 | Low frequency electromagnetic fluctuations in the vicinity of a magnetospheric substorm onset were investigated using simultaneous observations by THEMIS multiple probes in the near-Earth plasma sheet in the magnetotail. The observations indicate that in the vicinity of a substorm onset, kinetic Alfven waves can be excited in the high-beta plasma sheet (beta=2 mu(0)nT/B-2, the ratio of plasma thermal pressure to magnetic pressure) within the near-Earth magnetotail. The kinetic Alfven wave has a small spatial scale in the high-beta plasma. The parallel electric field accompanying kinetic Alfven waves accelerates the charged particles along the magnetic field. The kinetic Alfven waves play an important role in the substorm trigger process, and possibly in the formation of a substorm current wedge. |
| 英文摘要 | Low frequency electromagnetic fluctuations in the vicinity of a magnetospheric substorm onset were investigated using simultaneous observations by THEMIS multiple probes in the near-Earth plasma sheet in the magnetotail. The observations indicate that in the vicinity of a substorm onset, kinetic Alfven waves can be excited in the high-beta plasma sheet (beta=2 mu(0)nT/B-2, the ratio of plasma thermal pressure to magnetic pressure) within the near-Earth magnetotail. The kinetic Alfven wave has a small spatial scale in the high-beta plasma. The parallel electric field accompanying kinetic Alfven waves accelerates the charged particles along the magnetic field. The kinetic Alfven waves play an important role in the substorm trigger process, and possibly in the formation of a substorm current wedge. |
| 学科主题 | 空间物理 |
| 收录类别 | SCI |
| 资助信息 | National Natural Science Foundation of China [40974099, 40731054, 40704027, 40921063]; Specialized Research Fund for State Key Laboratories; National Basic Research Program of China [2011CB811404]; NASA [NAS5-02099] |
| 语种 | 英语 |
| 公开日期 | 2014-12-15 |
| 源URL | [http://ir.nssc.ac.cn/handle/122/3304]  |
| 专题 | 国家空间科学中心_空间科学部 |
| 推荐引用方式 GB/T 7714 | Duan SuPing,Liu ZhenXing,Angelopoulos, Vassilis. Observations of kinetic Alfven waves by THEMIS near a substorm onset[J]. CHINESE SCIENCE BULLETIN,2012,57(12):1429-1435. |
| APA | Duan SuPing,Liu ZhenXing,&Angelopoulos, Vassilis.(2012).Observations of kinetic Alfven waves by THEMIS near a substorm onset.CHINESE SCIENCE BULLETIN,57(12),1429-1435. |
| MLA | Duan SuPing,et al."Observations of kinetic Alfven waves by THEMIS near a substorm onset".CHINESE SCIENCE BULLETIN 57.12(2012):1429-1435. |
入库方式： OAI收割
来源：国家空间科学中心
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