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Influences of the interplanetary magnetic field clock angle and cone angle on the field-aligned currents in the magnetotail
Cheng, Z. W.1; Shi, J. K.1; Dunlop, M.2; Liu, Z. X.1; 北京8701信箱
Department空间天气学国家重点实验室
Source PublicationGEOPHYSICAL RESEARCH LETTERS
2013-10-28
Volume40Issue:20Pages:5355-5359
ISSN1944-8007
Language英语
KeywordField-aligned Currents Interplanetary Magnetic Field Magnetotail
AbstractThe influences of the interplanetary magnetic field (IMF) cone angle θ and clock angle ϕ on the field-aligned currents (FACs) at the plasma sheet boundary layers (PSBLs) have been investigated using Cluster Data. The FAC occurrence increases monotonically with IMF cone angle and has two peaks at −90° and +110° clock angle, respectively. The peak at +110° is distinctly larger than that at −90°. Overall, there are more FACs between 0° < ϕ < 180°, indicating that FACs occurrence is closely associated with duskward IMF. More FACs occur when 90° < |ϕ| < 180°, implying that FAC is closely associated with southward IMF. The large FAC densities occur when 60° < |ϕ| < 120°. The density also has two peaks and the peak at +90° clock angle (duskward IMF) is larger than that at −90° (dawnward IMF). These results indicate that the IMF influence on the FACs is from all IMF components and not only from a single component.; The influences of the interplanetary magnetic field (IMF) cone angle theta and clock angle phi on the field-aligned currents (FACs) at the plasma sheet boundary layers (PSBLs) have been investigated using Cluster Data. The FAC occurrence increases monotonically with IMF cone angle and has two peaks at -90 degrees and +110 degrees clock angle, respectively. The peak at +110 degrees is distinctly larger than that at 90 degrees. Overall, there are more FACs between 0 degrees
Funding Project中国科学院空间科学与应用研究中心
Document Type期刊论文
Version出版稿
Identifierhttp://ir.nssc.ac.cn/handle/122/1538
Collection空间科学部
Corresponding Author北京8701信箱
Affiliation1.Chinese Acad Sci, Natl Space Sci Ctr, State Key Lab Space Weather, Beijing 100190, Peoples R China
2.Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England
Recommended Citation
GB/T 7714
Cheng, Z. W.,Shi, J. K.,Dunlop, M.,et al. Influences of the interplanetary magnetic field clock angle and cone angle on the field-aligned currents in the magnetotail[J]. GEOPHYSICAL RESEARCH LETTERS,2013,40(20):5355-5359.
APA Cheng, Z. W.,Shi, J. K.,Dunlop, M.,Liu, Z. X.,&北京8701信箱.(2013).Influences of the interplanetary magnetic field clock angle and cone angle on the field-aligned currents in the magnetotail.GEOPHYSICAL RESEARCH LETTERS,40(20),5355-5359.
MLA Cheng, Z. W.,et al."Influences of the interplanetary magnetic field clock angle and cone angle on the field-aligned currents in the magnetotail".GEOPHYSICAL RESEARCH LETTERS 40.20(2013):5355-5359.
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