PMO OpenIR
Finding the Normal Direction of Interplanetary Directional Discontinuities-A New Scheme
Yang, Y-H1; Chao, J. K.1; Yang, L.2,3; Li, Q. H.2,4; Wu, D. J.2
2019-10-21
Source PublicationJOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
ISSN2169-9380
Pages17
Corresponding AuthorYang, Y-H(yhyang@jupiter.ss.ncu.edu.tw)
AbstractDirectional discontinuities (DDs) are common structures in the interplanetary space. Correctly determining the normal of a DD is important to understand the changes of phase fronts of magnetic fields adjacent to a discontinuity as well as helpful for the applications in many regimes of space physics research. In this work, we propose a new scheme to estimate the normal directions of DDs by finding the smallest standard deviation of normal magnetic fields derived from the cross product of magnetic fields on both sides of the discontinuity, based on the idea that the phase fronts of the adjacent magnetic fields are closely parallel to the DD plane. By comparing with the normal direction determined from Cluster multiple spacecraft, we show that our scheme can provide the same accuracy as that from the multispacecraft estimation. Moreover, our scheme gives a consistent result of normal estimations at different Cluster spacecraft. We notice that in some cases, the normal directions derived from the minimum variance analysis have large differences between those of multispacecraft method and our scheme implying significant influence of the kinetic effect of particles in the transition region of the discontinuity. A few events of STEREO B observations are further studied to show that our scheme can be applied to DDs in single-spacecraft measurements with even small rotation of magnetic fields across the discontinuities. With the help of an accurate normal estimation, we can understand the variations of magnetic field phase fronts in the vicinity of discontinuities.
DOI10.1029/2019JA026869
WOS KeywordMAGNETIC-FIELD ; TANGENTIAL DISCONTINUITIES ; SOLAR-WIND ; SPACECRAFT OBSERVATIONS ; VELOCITY ; WAVES ; TIMES
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000491785800001
PublisherAMER GEOPHYSICAL UNION
Citation statistics
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/36594
Collection中国科学院紫金山天文台
Corresponding AuthorYang, Y-H
Affiliation1.Natl Cent Univ, Grad Inst Space Sci & Engn, Taoyuan, Taiwan
2.Chinese Acad Sci, CAS Key Lab Planetary Sci, Purple Mt Observ, Nanjing, Jiangsu, Peoples R China
3.Chinese Acad Sci, State Key Lab Space Weather, Natl Space Sci Ctr, Beijing, Peoples R China
4.Univ Sci & Technol China, Sch Astron & Space Sci, Hefei, Anhui, Peoples R China
Recommended Citation
GB/T 7714
Yang, Y-H,Chao, J. K.,Yang, L.,et al. Finding the Normal Direction of Interplanetary Directional Discontinuities-A New Scheme[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2019:17.
APA Yang, Y-H,Chao, J. K.,Yang, L.,Li, Q. H.,&Wu, D. J..(2019).Finding the Normal Direction of Interplanetary Directional Discontinuities-A New Scheme.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,17.
MLA Yang, Y-H,et al."Finding the Normal Direction of Interplanetary Directional Discontinuities-A New Scheme".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS (2019):17.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Yang, Y-H]'s Articles
[Chao, J. K.]'s Articles
[Yang, L.]'s Articles
Baidu academic
Similar articles in Baidu academic
[Yang, Y-H]'s Articles
[Chao, J. K.]'s Articles
[Yang, L.]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Yang, Y-H]'s Articles
[Chao, J. K.]'s Articles
[Yang, L.]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

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