Measurements of the Vorticity in the Bursty Bulk Flows
文献类型：期刊论文
| 作者 | Zhang, L.Q.3; Baumjohann, W.2; Dai, L.3; Khotyaintsev, Yu V.1; Wang, C.3 |
| 刊名 | GEOPHYSICAL RESEARCH LETTERS
 |
| 出版日期 | 2019 |
| 卷号 | 46期号:17-18页码:10322-10329 |
| 关键词 | vorticity flow eddy bursty bulk flows Curlometer analysis kinetic Alfvenic wave |
| ISSN号 | 0094-8276 |
| DOI | 10.1029/2019GL084597 |
| 英文摘要 | Curlometer analysis from 4-point Magnetospheric Multiscale spacecraft measurements is applied to obtain the vorticity (omega) in the bursty bulk flow (BBF) from tail reconnection. Increases of the vorticity is associated with enhancements of the high-energy ion flux (above 10 keV) and the flow speed during the BBF. Finger-like structure, consisting of the lower-energy ions below 10 keV, occurs mainly during intervals of small vorticity. The vorticity during BBF consistently shows a dominant -Z Geocentric solar magnetospheric (GSM) component, indicating clockwise vortexes in the flows. Combined with bipolar signals of Vy-geocentric solar magnetic, the Magnetospheric Multiscale observations provide evidence for flow eddies in the BBF. Power spectral analysis suggests existence of kinetic Alfvenic wave emissions, in addition to the flow eddy, in the high-frequency regime in the BBF turbulence. |
| 语种 | 英语 |
| 源URL | [http://ir.nssc.ac.cn/handle/122/7183]  |
| 专题 | 国家空间科学中心_空间科学部 |
| 作者单位 | 1.Swedish Institute of Space Physics, Uppsala, Sweden 2.Space Research Institute, Austrian Academy of Sciences, Graz, Austria; 3.State Key Laboratory of Space Weather, National Space Science Center, Chinese Academy of Sciences, Beijing, China; |
| 推荐引用方式 GB/T 7714 | Zhang, L.Q.,Baumjohann, W.,Dai, L.,et al. Measurements of the Vorticity in the Bursty Bulk Flows[J]. GEOPHYSICAL RESEARCH LETTERS,2019,46(17-18):10322-10329. |
| APA | Zhang, L.Q.,Baumjohann, W.,Dai, L.,Khotyaintsev, Yu V.,&Wang, C..(2019).Measurements of the Vorticity in the Bursty Bulk Flows.GEOPHYSICAL RESEARCH LETTERS,46(17-18),10322-10329. |
| MLA | Zhang, L.Q.,et al."Measurements of the Vorticity in the Bursty Bulk Flows".GEOPHYSICAL RESEARCH LETTERS 46.17-18(2019):10322-10329. |
入库方式： OAI收割
来源：国家空间科学中心
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