%0 Journal Article
%T MULTIPLE FLUX ROPE EVENTS AT THE HIGH-LATITUDE MAGNETOPAUSE ON JANUARY 26, 2001 :CURRENT DENSITY CALCULATING<br>2001年1月26日高纬磁层顶通量管事件的观测研究——空间电流密度计算及分析
%A 肖池阶
%A 濮祖荫
%A 黄宗英
%A 傅绥燕
%A 谢伦
%A 宗秋刚
%A T Fritz
%A K-H Glassmeier
%A 刘振兴
%A 曹晋滨
%A 史建魁
%A 沈超
%A 路立
%A 王迺权
%A 陈涛
%J 地球物理学报
%D 2004
%I 
%X A systematic comparison is carried out for three Methods of current density calculating based on simultaneous magnetic field measurements of four-spacecraft Cluster mission. Analytically and numerically demonstrated that within the linear approximation, all these methods lead to the exactly the same results. As a case study, the current density of multiple flux rope events at the high-latitude magnetopause on January 26,2001 is investigated. It is showed that an intense current flows inside the ropes with the current density reaching as high as about 10 -8A/m 2. The current inside rope is valuable for the small relative calculating error. It is also found that the directory of current is almost parallel the axis of flux rope gotten by magnetic minimum variance analysis (MVA). It is supposed the current MVA method is useful and simply for the rope axis orientation.
%K Current density
%K Flux rope
%K Magnetopause boundary layer
%K Maximum/Minimum variation analy-sis<br>电流密度
%K 通量管
%K 磁层顶
%K 最小方差分析法
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=1E44AE713D8A6DE0&jid=14DC41C59CBF6770055A7D610D53AE46&aid=5B37FFA48E791EA0&yid=D0E58B75BFD8E51C&vid=F4B561950EE1D31A&iid=E158A972A605785F&sid=AF4A4411BB448A36&eid=B4F9D541F855CF96&journal_id=0001-5733&journal_name=地球物理学报&referenced_num=8&reference_num=13