中国科学院国家空间科学中心机构知识库
Advanced  
NSSC OpenIR  > 空间科学部  > 期刊论文
题名: Influence of the IMF Cone Angle on Invariant Latitudes of Polar Region Footprints of FACs in the Magnetotail: Cluster Observation
作者: Cheng, Z. W.; Shi, J. K.; Zhang, J. C.; Torkar, K.; Kistler, L. M.; Dunlop, M.; Carr, C.; Reme, H.; Dandouras, I.; Fazakerley, A.
作者部门: 空间科学部
通讯作者: Cheng, ZW (reprint author), NSSC CAS, State Key Lab Space Weather, Beijing, Peoples R China.
关键词: FAC in magnetotail ; footprints in polar region ; IMF cone angle
刊名: JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
ISSN号: 2169-9380
出版日期: 2018
卷号: 123, 期号:4, 页码:2588-2597
收录类别: SCI
项目资助者: National Natural Science Foundation of China [41474137, 41674145, 41374169] ; Specialized Research Fund for State Key Laboratories
英文摘要: The influence of the interplanetary magnetic field (IMF) cone angle (the angle between the IMF direction and the Sun-Earth line) on the invariant latitudes of the footprints of the field-aligned currents (FACs) in the magnetotail has been investigated. We performed a statistical study of 542 FAC cases observed by the four Cluster spacecraft in the Northern Hemisphere. The results show that there are almost no FACs when the IMF cone angle is less than 10 degrees, and there are indications of the FACs in the plasma sheet boundary layers being weak under the radial IMF conditions. The footprints of the large FAC (> 10 nA/m(2)) cases are within invariant latitudes < 71 degrees and mainly within IMF cone angles theta > 60 degrees, which implies that the footprints of the large FACs mainly expand equatorward with large IMF cone angle. The equatorward boundary of the FAC footprints in the polar region decreases with increasing IMF cone angle (and has a better correlation for northward IMF), which shows that the IMF cone angle plays an important controlling role in FAC distributions in the magnetosphere-ionosphere coupling system. There is almost no correlation between the poleward boundary and the IMF cone angle for both northward and southward IMF. This is because the poleward boundary movement is limited by an enhanced lobe magnetic flux. This is the first time a correlation between FAC footprints in the polar region and IMF cone angles has been determined.
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.nssc.ac.cn/handle/122/6328
Appears in Collections:空间科学部_期刊论文

Files in This Item:
File Name/ File Size Content Type Version Access License
201812342588-2597.pdf(1527KB)期刊论文作者接受稿限制开放View 联系获取全文
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Cheng, Z. W.]'s Articles
[Shi, J. K.]'s Articles
[Zhang, J. C.]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Cheng, Z. W.]‘s Articles
[Shi, J. K.]‘s Articles
[Zhang, J. C.]‘s Articles
Related Copyright Policies
Null
Social Bookmarking
Add to CiteULike Add to Connotea Add to Del.icio.us Add to Digg Add to Reddit
文件名: 201812342588-2597.pdf
格式: Adobe PDF
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.

 

 

Valid XHTML 1.0!
Copyright © 2007-2018  中国科学院国家空间科学中心 - Feedback
Powered by CSpace