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DOI | 10.1029/2018GL077902 |
Intense Cross-Tail Field-Aligned Currents in the Plasma Sheet at Lunar Distances | |
Xu, Sixue1,2,3; Runov, Andrei1,2; Artemyev, Anton1,2,4; Angelopoulos, Vassilis1,2; Lu, Quanming3 | |
2018-05-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2018 |
卷号 | 45期号:10页码:4610-4617 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Peoples R China; Russia |
英文摘要 | Field-aligned currents in the Earth's magnetotail, typically observed at the plasma sheet boundary layer, are believed to be driven by transient plasma flows and strong plasma pressure gradients at equatorial footpoints. Magnetotail currents (transverse to the magnetic field), usually observed within the plasma sheet, flow duskward (cross-tail) and are believed to be diamagnetic. These two current systems, field aligned and transverse, can be easily distinguished because of their differing propagation direction. By statistically analyzing magnetotail current sheet crossings by the two lunar-orbiting Acceleration, Reconnection, Turbulence and Electrodynamics of Moon's Interaction with the Sun spacecraft (probes), we demonstrate that the duskward magnetotail current in the lunar distance magnetotail (similar to 55-65R(E)) can, at times, be predominantly field aligned. In about half the current sheet crossings examined, there is a significant equatorial, unidirectional cross-tail magnetic field component near the peak cross-tail current density. Because of the alignment of the magnetic field with the cross-tail current, a significant part of the total cross-tail current (similar to 1 to 10 nA/m(2)) is field aligned. This magnetic field component contributes significantly to the vertical pressure balance and is therefore important for plasma sheet dynamic stability. The generation mechanism and closure of the resultant field-aligned current system and its role in the dynamic stability of the current sheet are important to investigate further. |
英文关键词 | Magnetosphere Magnetotail Plasma Sheet Current Sheet |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000435262000010 |
WOS关键词 | THIN CURRENT SHEETS ; MAGNETOTAIL CURRENT SHEET ; CLUSTER |
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/26655 |
专题 | 气候变化 |
作者单位 | 1.Univ Calif Los Angeles, Dept Earth Planetary & Space Sci, Los Angeles, CA 90095 USA; 2.Univ Calif Los Angeles, Inst Geophys & Planetary Phys, Los Angeles, CA 90024 USA; 3.Univ Sci & Technol China, Dept Geophys & Planetary Sci, CAS Key Lab Geospace Environm, Hefei, Anhui, Peoples R China; 4.RAS, Space Res Inst, Moscow, Russia |
推荐引用方式 GB/T 7714 | Xu, Sixue,Runov, Andrei,Artemyev, Anton,et al. Intense Cross-Tail Field-Aligned Currents in the Plasma Sheet at Lunar Distances[J]. GEOPHYSICAL RESEARCH LETTERS,2018,45(10):4610-4617. |
APA | Xu, Sixue,Runov, Andrei,Artemyev, Anton,Angelopoulos, Vassilis,&Lu, Quanming.(2018).Intense Cross-Tail Field-Aligned Currents in the Plasma Sheet at Lunar Distances.GEOPHYSICAL RESEARCH LETTERS,45(10),4610-4617. |
MLA | Xu, Sixue,et al."Intense Cross-Tail Field-Aligned Currents in the Plasma Sheet at Lunar Distances".GEOPHYSICAL RESEARCH LETTERS 45.10(2018):4610-4617. |
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