NSSC OpenIR  > 空间科学部
Alternative TitleCluster observation and analysis of bifurcated current sheet structure in a quiet time
汤朝灵; 路立; 李中元; 北京8701信箱
Source Publication地球物理学报
Keyword双峰电流片 cluster观测 timing分析 磁尾 等离子体不稳定性
Other AbstractWe analyse the vertical structure of the magnetotail current sheet within 2011-2030 UT on 19 August 2001,during which the Cluster spacecrafts crossed the current sheet in a quiet time. In the intervals ,the current sheet moved slowly,and the value of the AE index was relatively small,about 40-130 nT.In the quiet time, without fast plasma flow and without significant flapping motion,we also directly observed the bifurcated current sheet.Ion density,velocity and temperature,measured by Cluster spacecrafts in the current sheet during 2011-2030 UT 19 August 2001 are discussed.It is shown that ion density was comparatively bigger near the neutral line,presented non2symmetric distribution,but the distribution of temperature was uniform. And it is observed that in the y direction , the proton bulk velocity is opposite on the both sides of the neutral line. Finally we discuss a possible mechanism for the bifurcated current sheet in a quiet time,which is nonlinear evolution of the lower2hybrid drift instability in the current sheet.These may be important for perfecting the formation mechanism of current sheet bifurcation.
Indexed ByCSCD
Funding Project中国科学院空间科学与应用研究中心
Citation statistics
Document Type期刊论文
Corresponding Author北京8701信箱
Recommended Citation
GB/T 7714
汤朝灵,路立,李中元,等. 宁静期间双峰电流片的观测研究[J]. 地球物理学报,2007,50(4):979-985.
APA 汤朝灵,路立,李中元,&北京8701信箱.(2007).宁静期间双峰电流片的观测研究.地球物理学报,50(4),979-985.
MLA 汤朝灵,et al."宁静期间双峰电流片的观测研究".地球物理学报 50.4(2007):979-985.
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