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DOI | 10.1029/2019GL084597 |
Measurements of the Vorticity in the Bursty Bulk Flows | |
Zhang, L. Q.1; Baumjohann, W.2; Dai, L.1; Khotyaintsev, Yu, V3; Wang, C.1 | |
2019-09-24 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2019 |
文章类型 | Article;Early Access |
语种 | 英语 |
国家 | Peoples R China; Austria; Sweden |
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. |
英文关键词 | vorticity flow eddy bursty bulk flows Curlometer analysis kinetic Alfvenic wave |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000487981000001 |
WOS关键词 | LOW-FREQUENCY WAVES ; PLASMA SHEET ; X LINES ; MAGNETOTAIL ; TURBULENCE ; CHANNELS ; FIELDS |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/187135 |
专题 | 气候变化 |
作者单位 | 1.Chinese Acad Sci, State Key Lab Space Weather, Natl Space Sci Ctr, Beijing, Peoples R China; 2.Austrian Acad Sci, Space Res Inst, Graz, Austria; 3.Swedish Inst Space Phys, Uppsala, Sweden |
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. |
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. |
MLA | Zhang, L. Q.,et al."Measurements of the Vorticity in the Bursty Bulk Flows".GEOPHYSICAL RESEARCH LETTERS (2019). |
条目包含的文件 | 条目无相关文件。 |
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