Multiple magnetic topologies in flux transfer events: THEMIS   measurements

doi:10.1007/s11431-016-6071-9

CORC > 北京大学 > 地球与空间科学学院

	Multiple magnetic topologies in flux transfer events: THEMIS measurements
	Lv, LeiQi ; Pu, ZuYin ; Xie, Lun
刊名	SCIENCE CHINA-TECHNOLOGICAL SCIENCES
	2016
关键词	flux transfer events magnetic flux rope magnetic field topology magnetopause X-LINE RECONNECTION EARTHS MAGNETOPAUSE BOUNDARY-LAYER MAGNETOSPHERE SIMULATIONS SIGNATURE ISEE-2 FIELD FLOW
DOI	10.1007/s11431-016-6071-9
英文摘要	Flux transfer events (FTEs) are local transient magnetic reconnections at the magnetopause (MP) that provide channels for transport of solar wind energy and plasma into the magnetosphere (MSP). All current theoretical models suggest that FTEs are open-flux ropes; however, global simulations show that they contain both open and closed magnetic fields. To clarify this topology, we analyzed 441 events observed by THEMIS and investigated their magnetic topologies. Only one type of open field line was detected in most magnetosheath (MSH) FTEs, independent of the polarity of the B (n) bipolar signatures. Newly formed MSH field lines were also observed. In the all MP boundary layers FTEs and most MSP FTEs, multiple types of topologies were observed, irrelevant to the B (n) bipolar polarity. Closed field lines were found in all MP boundary layers and MSP FTEs. Meanwhile very few boundary FTEs contained the newly formed MSH flux. In some situations, only closed field lines were seen in MSP FTEs, which are referred to as the fossil FTEs. These results, which largely differ from the traditional view, demonstrate the existence of complex magnetic topologies in FTEs. Based on these results, we propose a new 3D FTE picture to modify the current FTE models.; National Natural Science Foundation of China [41274167, 41374166]; ESA Guest Investigator Program; ISSI Bern; SCI(E); EI; 中国科学引文数据库(CSCD); ARTICLE; lvleiqipku@pku.edu.cn; zypu@pku.edu.cn; 8; 1283-1293; 59
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/491734]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	Lv, LeiQi,Pu, ZuYin,Xie, Lun. Multiple magnetic topologies in flux transfer events: THEMIS measurements[J]. SCIENCE CHINA-TECHNOLOGICAL SCIENCES,2016.
APA	Lv, LeiQi,Pu, ZuYin,&Xie, Lun.(2016).Multiple magnetic topologies in flux transfer events: THEMIS measurements.SCIENCE CHINA-TECHNOLOGICAL SCIENCES.
MLA	Lv, LeiQi,et al."Multiple magnetic topologies in flux transfer events: THEMIS measurements".SCIENCE CHINA-TECHNOLOGICAL SCIENCES (2016).