NSSC OpenIR  > 空间科学部
Method for inferring the axis orientation of cylindrical magnetic flux rope based on single-point measurement
Rong, Z. J.1,2; Wan, W. X.1,2; Shen, C.3; Zhang, T. L.4,5; Lui, A. T. Y.6; Wang, Yuming4; Dunlop, M. W.7; Zhang, Y. C.3; Zong, Q. -G.8; 北京8701信箱
Department空间天气学国家重点实验室
Source PublicationJOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
2013
Volume118Issue:1Pages:271-283
ISSN2169-9402
Language英语
KeywordFlux Ropes Plasmoid Flux Transfer Events Magnetic Cloud Magnetic Reconnection
AbstractWe develop a new simple method for inferring the orientation of a magnetic flux rope, which is assumed to be a time-independent cylindrically symmetric structure via the direct single-point analysis of magnetic field structure. The model tests demonstrate that, for the cylindrical flux rope regardless of whether it is force-free or not, the method can consistently yield the axis orientation of the flux rope with higher accuracy and stability than the minimum variance analysis of the magnetic field and the Grad-Shafranov reconstruction technique. Moreover, the radial distance to the axis center and the current density can also be estimated consistently. Application to two actual flux transfer events observed by the four satellites of the Cluster mission demonstrates that the method is more appropriate to be used for the inner part of flux rope, which might be closer to the cylindrical structure, showing good agreement with the results obtained from the optimal Grad-Shafranov reconstruction and the least squares technique of Faraday's law, but fails to produce such agreement for the outer satellite that grazes the flux rope. Therefore, the method must be used with caution.; We develop a new simple method for inferring the orientation of a magnetic flux rope, which is assumed to be a time-independent cylindrically symmetric structure via the direct single-point analysis of magnetic field structure. The model tests demonstrate that, for the cylindrical flux rope regardless of whether it is force-free or not, the method can consistently yield the axis orientation of the flux rope with higher accuracy and stability than the minimum variance analysis of the magnetic field and the Grad-Shafranov reconstruction technique. Moreover, the radial distance to the axis center and the current density can also be estimated consistently. Application to two actual flux transfer events observed by the four satellites of the Cluster mission demonstrates that the method is more appropriate to be used for the inner part of flux rope, which might be closer to the cylindrical structure, showing good agreement with the results obtained from the optimal Grad-Shafranov reconstruction and the least squares technique of Faraday's law, but fails to produce such agreement for the outer satellite that grazes the flux rope. Therefore, the method must be used with caution. Citation: Rong, Z. J., W. X. Wan, C. Shen, T. L. Zhang, A. T. Y. Lui, Y. Wang, M. W. Dunlop, Y. C. Zhang, and Q.-G. Zong (2013), Method for inferring the axis orientation of cylindrical magnetic flux rope based on single-point measurement, J. Geophys. Res. Space Physics, 118, 271-283, doi:10.1029/2012JA018079.
Indexed BySCI
Funding Project中国科学院空间科学与应用研究中心
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/1533
Collection空间科学部
Corresponding Author北京8701信箱
Affiliation1.Chinese Acad Sci, CAS Key Lab Ionospher Environm, Inst Geol & Geophys, Beijing 100029, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Beijing Natl Observ Space Environm, Beijing 100029, Peoples R China
3.Chinese Acad Sci, Ctr Space Sci & Appl Res, State Key Lab Space Weather, Beijing 100029, Peoples R China
4.Univ Sci & Technol China, Dept Geophys & Planetary Sci, Key Lab Basic Plasma Phys, Hefei 230026, Peoples R China
5.Austrian Acad Sci, Space Res Inst, A-8010 Graz, Austria
6.Johns Hopkins Univ, Appl Phys Lab, Laurel, MD 20707 USA
7.Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England
8.Peking Univ, Dept Geophys, Beijing 100871, Peoples R China
Recommended Citation
GB/T 7714
Rong, Z. J.,Wan, W. X.,Shen, C.,et al. Method for inferring the axis orientation of cylindrical magnetic flux rope based on single-point measurement[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2013,118(1):271-283.
APA Rong, Z. J..,Wan, W. X..,Shen, C..,Zhang, T. L..,Lui, A. T. Y..,...&北京8701信箱.(2013).Method for inferring the axis orientation of cylindrical magnetic flux rope based on single-point measurement.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,118(1),271-283.
MLA Rong, Z. J.,et al."Method for inferring the axis orientation of cylindrical magnetic flux rope based on single-point measurement".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 118.1(2013):271-283.
Files in This Item: Download All
File Name/Size DocType Version Access License
20131181271.pdf(564KB)期刊论文出版稿开放获取CC BY-NC-SAView Download
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Rong, Z. J.]'s Articles
[Wan, W. X.]'s Articles
[Shen, C.]'s Articles
Baidu academic
Similar articles in Baidu academic
[Rong, Z. J.]'s Articles
[Wan, W. X.]'s Articles
[Shen, C.]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Rong, Z. J.]'s Articles
[Wan, W. X.]'s Articles
[Shen, C.]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: 20131181271.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

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