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首页> 外文期刊>Journal of Geophysical Research, A. Space Physics: JGR >Dependence of IMF B_y penetration into the neutral sheet on IMF B_z and geomagnetic activity
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Dependence of IMF B_y penetration into the neutral sheet on IMF B_z and geomagnetic activity

机译：依赖国际货币基金组织(IMF)的话渗透到中性国际货币基金组织(IMF)说是和地磁活动

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摘要

The penetration of interplanetary magnetic field (IMF) B_y into the magnetosphere plays an important role in determining magnetospheric configuration and its dynamics. In this paper, using 9 years of Cluster data at the center of neutral sheet, we statistically study the relations of the penetration of IMF B_y in the neutral sheet (NS) with IMF B_z and the Kp index. The correlation coefficient between NS B_y and IMF B_y is enhanced during the periods of southward IMF B_z and large Kp indexes. The penetration efficiency of IMF B_y, which is defined as the slope of the linear fit of the points in the B_y-IMF B_y space, is larger during southward IMF B_z than during northward IMF B_z. The penetration efficiency of IMF B_y also increases with increasing Kp index. Since the Kp index can be considered as an index of magnetospheric convection, this means that the penetration of IMF B_y into the magnetosphere is enhanced during the periods of strong magnetospheric convection. These results indicate that the IMF B_z and magnetospheric convection can influence the neutral sheet B_y and even magnetotail dynamics by changing the penetration of IMF B_y.
机译：行星际磁场的渗透的话(IMF)进入磁层起着在确定磁性层的重要作用配置和动态。使用9年的集群数据的中心中性表,我们统计研究国际货币基金组织的渗透关系的话中性表(NS)与国际货币基金组织(IMF)说是Kp指数。NS的话和之间的相关系数国际货币基金组织(IMF)的话是增强的时期中国际货币基金组织(IMF)向南说是和大型Kp索引。渗透国际货币基金组织的效率的话,的斜率定义为线性的分的话B_y-IMF空间,在更大南国际货币基金组织(IMF)说是比北方国际货币基金组织的说是。国际货币基金组织的渗透效率的话增加而增加Kp指数。索引可以被看作是一个指数磁性层的对流,这意味着国际货币基金组织(IMF)的话进入磁层的渗透增强在强劲的时期磁性层的对流。国际货币基金组织(IMF)说是和磁性层的对流中性片的话,甚至可以影响吗通过改变磁尾动态渗透国际货币基金组织(IMF)的话。

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