Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019GL082503 |
Electron-Driven Dissipation in a Tailward Flow Burst | |
Chen, Z. Z.1; Fu, H. S.1; Liu, C. M.1; Wang, T. Y.2; Ergun, R. E.3; Cozzani, G.4; Huang, S. Y.5; Khotyaintsev, Y. V.6; Le Contel, O.4; Giles, B. L.7; Burch, J. L.8 | |
2019-06-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
![]() |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2019 |
卷号 | 46期号:11页码:5698-5706 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; England; USA; France; Sweden |
英文摘要 | Traditionally, the magnetotail flow burst outside the diffusion region is known to carry ions and electrons together (V-i = V-e), with the frozen-in condition well satisfied (E + V-e x B = 0). Such picture, however, may not be true, based on our analyses of the high-resolution MMS (Magnetospheric Multiscale mission) data. We find that inside the flow burst the electrons and ions can be decoupled (V-e not equal V-i), with the electron speed 5 times larger than the ion speed. Such super-Alfvenic electron jet, having scale of 10 d(i) (ion inertial length) in X-GSM direction, is associated with electron demagnetization (E + V-e x B not equal 0), electron agyrotropy (crescent distribution), and O-line magnetic topology but not associated with the flow reversal and X-line topology; it can cause strong energy dissipation and electron heating. We quantitatively analyze the dissipation and find that it is primarily attributed to lower hybrid drift waves. These results emphasize the non-MHD (magnetohydrodynamics) behaviors of magnetotail flow bursts and the role of lower hybrid drift waves in dissipating energies. |
英文关键词 | magnetotail flow burst non-MHD behaviors energy dissipation lower hybrid drift wave O-line topology |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000477616200008 |
WOS关键词 | ELECTROMAGNETIC ENERGY-CONVERSION ; BULK FLOWS ; PLASMA SHEET ; DIPOLARIZATION FRONTS ; MAGNETIC RECONNECTION ; CLUSTER ; SCALE ; ACCELERATION ; TURBULENCE ; TRANSPORT |
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/184072 |
专题 | 气候变化 |
作者单位 | 1.Beihang Univ, Sch Space & Environm, Beijing, Peoples R China; 2.STFC, RAL Space, Didcot, Oxon, England; 3.Univ Colorado, Dept Astrophys & Planetary Sci, Boulder, CO 80309 USA; 4.UPMC, Ecole Polytech, CNRS, Lab Phys Plasmas, Palaiseau, France; 5.Wuhan Univ, Sch Elect Informat, Wuhan, Hubei, Peoples R China; 6.Swedish Inst Space Phys, Uppsala, Sweden; 7.NASA, Goddard Space Flight Ctr, Greenbelt, MD USA; 8.Southwest Res Inst, San Antonio, TX USA |
推荐引用方式 GB/T 7714 | Chen, Z. Z.,Fu, H. S.,Liu, C. M.,et al. Electron-Driven Dissipation in a Tailward Flow Burst[J]. GEOPHYSICAL RESEARCH LETTERS,2019,46(11):5698-5706. |
APA | Chen, Z. Z..,Fu, H. S..,Liu, C. M..,Wang, T. Y..,Ergun, R. E..,...&Burch, J. L..(2019).Electron-Driven Dissipation in a Tailward Flow Burst.GEOPHYSICAL RESEARCH LETTERS,46(11),5698-5706. |
MLA | Chen, Z. Z.,et al."Electron-Driven Dissipation in a Tailward Flow Burst".GEOPHYSICAL RESEARCH LETTERS 46.11(2019):5698-5706. |
条目包含的文件 | 条目无相关文件。 |
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。
修改评论