Using Cluster four spacecraft data, we have made a statistical research on the motion properties of the magnetotail current sheets of the year 2004 and 2005 with various methods. We find that most of the current sheets are propagating from the midnight tail region to dawn and dusk flanks which is consistent with previous studies. Most of the current sheets are propagating with the velocities smaller than 100 km/s, and the exceptions account for 6.5 % of all events. We have also found that ‘Enter/Retreat’ current sheets more favorably occur during the southward interplanetary magnetic field (IMF).
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机译：利用四类航天器数据，我们用各种方法对2004年和2005年的磁尾流片的运动特性进行了统计研究。我们发现，当前的大多数表层都是从午夜的尾巴区域传播到黎明和黄昏的侧翼，这与以前的研究一致。当前大多数工作表都以小于100 km / s的速度传播，例外占所有事件的6.5％。我们还发现，“进入/撤退”电流更容易发生在南向星际磁场（IMF）期间。
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