Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019GL083885 |
Ionospheric Cold Ions Detected by MMS Behind Dipolarization Fronts | |
Xu, Y.1; Fu, H. S.1; Norgren, C.2; Toledo-Redondo, S.3,4; Liu, C. M.1; Dong, X. C.1 | |
2019-07-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2019 |
卷号 | 46期号:14页码:7883-7892 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; Norway; Spain; France |
英文摘要 | Traditionally, dipolarization front (DF) is a discontinuity at the leading edge of the high-speed plasma jets, separating hot tenuous plasma from the denser ambient plasma. The particles behind the DF are usually hot population resulting from various heating and acceleration processes therein. Here, using Magnetospheric Multiscale (MMS) observations, we report that cold ions of ionospheric origin can be found behind the DFs. These cold ions move along the reconnected magnetic field lines directly from lobe during substorm, forming counter-streaming cold ion flows behind the DFs. We find that cold ionospheric ions, as an additional population behind the DF, could increase ion density by similar to 50%. This indicates that the cold ions can change the gradients in the plasma density, such as the density-driven instabilities near the DFs, and further affect the DF dynamics. |
英文关键词 | dipolarization front cold ions counter-streaming beams magnetic reconnection |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000481818900003 |
WOS关键词 | BURSTY BULK FLOWS ; SUPRATHERMAL ELECTRON ACCELERATION ; ELECTROMAGNETIC ENERGY-CONVERSION ; ROLLING-PIN DISTRIBUTION ; MAGNETIC RECONNECTION ; PLASMA SHEET ; POLAR WIND ; DYNAMICS ; CLUSTER ; 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/185266 |
专题 | 气候变化 |
作者单位 | 1.Beihang Univ, Sch Space & Environm, Beijing, Peoples R China; 2.Univ Bergen, Birkeland Ctr Space Sci, Dept Phys & Technol, Bergen, Norway; 3.European Space Agcy, ESAC, Madrid, Spain; 4.Univ Toulouse, CNES, Ups, IRAP,CNRS, Toulouse, France |
推荐引用方式 GB/T 7714 | Xu, Y.,Fu, H. S.,Norgren, C.,et al. Ionospheric Cold Ions Detected by MMS Behind Dipolarization Fronts[J]. GEOPHYSICAL RESEARCH LETTERS,2019,46(14):7883-7892. |
APA | Xu, Y.,Fu, H. S.,Norgren, C.,Toledo-Redondo, S.,Liu, C. M.,&Dong, X. C..(2019).Ionospheric Cold Ions Detected by MMS Behind Dipolarization Fronts.GEOPHYSICAL RESEARCH LETTERS,46(14),7883-7892. |
MLA | Xu, Y.,et al."Ionospheric Cold Ions Detected by MMS Behind Dipolarization Fronts".GEOPHYSICAL RESEARCH LETTERS 46.14(2019):7883-7892. |
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