Asymmetric braking and dawnward deflection of dipolarization fronts:   Effects of ion reflection

doi:10.1002/2014GL061794

CORC > 北京大学 > 地球与空间科学学院

	Asymmetric braking and dawnward deflection of dipolarization fronts: Effects of ion reflection
	Zhou, Xu-Zhi ; Angelopoulos, Vassilis ; Liu, Jiang ; Runov, Andrei ; Pan, Dong-Xiao
刊名	geophysical research letters
	2014
关键词	dipolarization front ion reflection DF deceleration DF deflection dynamic pressure dawn-dusk asymmetry STATISTICAL CHARACTERISTICS FLUX BUNDLES FLOW BURSTS PERTURBATIONS PRESSURE
DOI	10.1002/2014GL061794
英文摘要	Dipolarization fronts (DFs), earthward propagating structures in the Earth's magnetotail with sharp enhancements of the northward magnetic field, can reflect and accelerate ions in the ambient plasma sheet. The ion reflection and acceleration process, which generates earthward flows ahead of the DF, also imposes a dynamic pressure on the DF to decelerate its earthward motion. It has been shown that the ion reflection process is not symmetric, with stronger ion accelerations at the evening side of the DF than at its morning side, which implies dawn-dusk asymmetric reaction of the ambient plasma and consequently dawnward deflection of DFs. In this paper, we examine this scenario in detail, by carrying out statistical studies based on Time History of Events and Macroscale Interactions during Substorms observations from 2008 to 2011. We demonstrate the important role of the ion reflection process in the longstanding problems regarding DF evolution and bursty flow braking in the near-Earth plasma sheet.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000345343100002&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Geosciences, Multidisciplinary; SCI(E); EI; 10; ARTICLE; xuzhi.zhou@gmail.com; 20; 6994-7001; 41
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/155409]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	Zhou, Xu-Zhi,Angelopoulos, Vassilis,Liu, Jiang,et al. Asymmetric braking and dawnward deflection of dipolarization fronts: Effects of ion reflection[J]. geophysical research letters,2014.
APA	Zhou, Xu-Zhi,Angelopoulos, Vassilis,Liu, Jiang,Runov, Andrei,&Pan, Dong-Xiao.(2014).Asymmetric braking and dawnward deflection of dipolarization fronts: Effects of ion reflection.geophysical research letters.
MLA	Zhou, Xu-Zhi,et al."Asymmetric braking and dawnward deflection of dipolarization fronts: Effects of ion reflection".geophysical research letters (2014).