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The relations between density of FACs in the plasma sheet boundary layers and Kp index
Cheng ZhengWei; Shi JianKui; Zhang TieLong; Dunlop, Malcolm; Liu ZhenXing; Cheng, ZW (reprint author), Chinese Acad Sci, CSSAR, State Key Lab Space Weather, Beijing 100190, Peoples R China.
Department空间科学部
Source PublicationSCIENCE CHINA-TECHNOLOGICAL SCIENCES
2011
Volume54Issue:11Pages:2987-2992
ISSN1674-7321
Language英语
KeywordField-aligned Currents Plasma Sheet Boundary Layer Kp Index Ae Index
AbstractWe have studied 172 field-aligned currents (FACs) cases observed by the ClusterII satellites when they crossed the plasma sheet boundary layer (PSBL) in the magnetotail from July to October 2001. We mainly analyzed the relationship between the characteristic of FACs at the PSBL in magnetotail and the Kp index. The main results indicated the followings: 1) In the different geomagnetic activity levels, the relative occurrence of FACs in PSBL increased monotonically with geomagnetic activity. 2) The density of FACs in PSBL increased monotonically with Kp index. In the storm main phase, the density of FACs increased dramatically, the maximum FACs approximately equaled 19.05 nA m(-2) while Kp equaled 5. 3) The variation of FACs density in PSBL was consistent with the variation of the Kp index. However, when AE < 800 nT, FACs density in PSBL increased with increasing AE, and when AE > 800 nT, it decreased with increasing AE. Therefore, our results suggested that the FACs density in PSBL had a closer correlation with Kp index.; We have studied 172 field-aligned currents (FACs) cases observed by the ClusterII satellites when they crossed the plasma sheet boundary layer (PSBL) in the magnetotail from July to October 2001. We mainly analyzed the relationship between the characteristic of FACs at the PSBL in magnetotail and the Kp index. The main results indicated the followings: 1) In the different geomagnetic activity levels, the relative occurrence of FACs in PSBL increased monotonically with geomagnetic activity. 2) The density of FACs in PSBL increased monotonically with Kp index. In the storm main phase, the density of FACs increased dramatically, the maximum FACs approximately equaled 19.05 nA m(-2) while Kp equaled 5. 3) The variation of FACs density in PSBL was consistent with the variation of the Kp index. However, when AE < 800 nT, FACs density in PSBL increased with increasing AE, and when AE > 800 nT, it decreased with increasing AE. Therefore, our results suggested that the FACs density in PSBL had a closer correlation with Kp index.
Indexed BySCI ; EI
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/122/3311
Collection空间科学部
Corresponding AuthorCheng, ZW (reprint author), Chinese Acad Sci, CSSAR, State Key Lab Space Weather, Beijing 100190, Peoples R China.
Recommended Citation
GB/T 7714
Cheng ZhengWei,Shi JianKui,Zhang TieLong,et al. The relations between density of FACs in the plasma sheet boundary layers and Kp index[J]. SCIENCE CHINA-TECHNOLOGICAL SCIENCES,2011,54(11):2987-2992.
APA Cheng ZhengWei,Shi JianKui,Zhang TieLong,Dunlop, Malcolm,Liu ZhenXing,&Cheng, ZW .(2011).The relations between density of FACs in the plasma sheet boundary layers and Kp index.SCIENCE CHINA-TECHNOLOGICAL SCIENCES,54(11),2987-2992.
MLA Cheng ZhengWei,et al."The relations between density of FACs in the plasma sheet boundary layers and Kp index".SCIENCE CHINA-TECHNOLOGICAL SCIENCES 54.11(2011):2987-2992.
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