NDLI: The relations between density of FACs in the plasma sheet boundary layers and Kp index

Content Provider	Springer Nature Link
Author	Cheng, ZhengWei Shi, JianKui Zhang, TieLong Dunlop, Malcolm Liu, ZhenXing
Copyright Year	2011
Abstract	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.
Starting Page	2987
Ending Page	2992
Page Count	6
File Format	PDF
ISSN	16747321
Journal	Science in China Series E: Technological Sciences
Volume Number	54
Issue Number	11
e-ISSN	1862281X
Language	English
Publisher	SP Science China Press
Publisher Date	2011-08-25
Publisher Place	Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	field-aligned currents plasma sheet boundary layer Kp index AE index Engineering
Content Type	Text
Resource Type	Article
Subject	Engineering Materials Science

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