The plasma sheet and boundary layers under northward IMF: A multi-point and multi-instrument perspective

	The plasma sheet and boundary layers under northward IMF: A multi-point and multi-instrument perspective
	Taylor, Mggt ; Lavraud, B. ; Escoubet, C. P. ; Milan, S. E. ; Nykyri, K. ; Dunlop, M. W. ; Davies, J. A. ; Friedel, R. H. W. ; Frey, H. ; Bogdanova, Y. V. ; Asnes, A. ; Laakso, H. ; Travnicek, P. ; Masson, A. ; Opgenoorth, H. ; Vallat, C. ; Fazakerley, A. N. ; Lahiff, A. D. ; Owen, C. J. ; Pitout, F. ; Pu, Z. ; Shen, C. ; Zong, Q. G. ; Reme, H. ; Scudder, J. ; Zhang, T. L.
刊名	Advances in Space Research
	2008
卷号	41 期号:10 页码:1619-1629
关键词	plasma sheet magnetopshere cold dense plasma sheet cluster double star interplanetary magnetic-field kelvin-helmholtz instability advanced composition explorer geotail observations magnetotail boundary earths magnetosphere mhd simulation solar-wind reconnection magnetopause
ISSN号	0273-1177
通讯作者	北京8701信箱
英文摘要	During conditions of northward interplanetary magnetic field (IMF), the near-tail plasma sheet is known to become denser and cooler, and is described as the cold-dense plasma sheet (CDPS). While its source is likely the solar wind, the prominent penetration mechanisms are less clear. The two main candidates are solar wind direct capture via double high-latitude reconnection on the dayside and Kelvin-Helmholtz/diffusive processes at the flank magnetopause. This paper presents a case study on the formation of the CDPS utilizing a wide variety of space- and ground-based observations, but primarily from the Double Star and Polar spacecraft on December 5th, 2004. The pertinent observations can be summarized as follows: TC-1 observes quasi-periodic (similar to 2 min period) cold-dense boundary layer (compared to a hot-tenuous plasma sheet) signatures interspersed with magnetosheath plasma at the dusk flank magnetopause near the dawn-dusk terminator. Analysis of this region suggests the boundary to be Kelvin-Helmholtz unstable and that plasma transport is ongoing across the boundary. At the same time, IMAGE spacecraft and ground based SuperDARN measurements provide evidence of high-latitude reconnection in both hemispheres. The Polar spacecraft, located in the southern hemisphere afternoon sector, sunward of TC-1, observes a persistent boundary layer with no obvious signature of boundary waves. The plasma is of a similar appearance to that observed by TC-1 inside the boundary layer further down the dusk flank, and by TC-2 in the near-Earth magnetotail. We present comparisons of electron phase space distributions between the spacecraft. Although the dayside boundary layer at Polar is most likely formed via double high-altitude reconnection, and is somewhat comparable to the flank boundary layer at Double Star, some differences argue in favour of additional transport that augment solar wind plasma entry into the tail regions.
学科主题	空间物理
收录类别	SCI
原文出处	http://www.sciencedirect.com/science?_ob=MImg&_imagekey=B6V3S-4PYJSGH-2-N&_cdi=5738&_user=1999492&_orig=search&_coverDate=12%2F31%2F2008&_sk=999589989&view=c&wchp=dGLbVlb-zSkWb&md5=15bec314f0be5e15b177618f674fa8db&ie=/sdarticle.pdf
语种	英语
内容类型	期刊论文
源URL	[http://ir.cssar.ac.cn/handle/122/1105]
专题	国家空间科学中心_空间科学部
推荐引用方式 GB/T 7714	Taylor, Mggt,Lavraud, B.,Escoubet, C. P.,et al. The plasma sheet and boundary layers under northward IMF: A multi-point and multi-instrument perspective[J]. Advances in Space Research,2008,41(10):1619-1629.
APA	Taylor, Mggt.,Lavraud, B..,Escoubet, C. P..,Milan, S. E..,Nykyri, K..,...&Zhang, T. L..(2008).The plasma sheet and boundary layers under northward IMF: A multi-point and multi-instrument perspective.Advances in Space Research,41(10),1619-1629.
MLA	Taylor, Mggt,et al."The plasma sheet and boundary layers under northward IMF: A multi-point and multi-instrument perspective".Advances in Space Research 41.10(2008):1619-1629.