A new field‐aligned current index AF and its relation to the storm‐time ring current and energetic neutral atom (ENA) emissions
A new field‐aligned current index AF and its relation to the storm‐time ring current and energetic neutral atom (ENA) emissions
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DOI：
10.1029/2002gl014762
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发表时间：
2002-05
影响因子：
5.2
通讯作者：
W. Sun;S. Akasofu
中科院分区：
文献类型：
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作者：
W. Sun;S. Akasofu
结果表明，新设计的场对准电流指数AF与Dst指数具有良好的相关性，相关系数为0.93。 AF指数基于中低纬度地磁Y（或D）分量变化主要由场对准电流引起的事实。还证明了 Geotail 卫星测量的高能中性原子 (ENA) 发射与 AF 指数有很好的相关性。
It is shown that a newly devised field‐aligned current index AF is well correlated with the Dst index, the correlation coefficient being 0.93. The AF index is based on the fact that geomagnetic Y (or D) component variations in the middle and low latitudes are mainly caused by field‐aligned currents. It is also demonstrated that energetic neutral atom (ENA) emissions measured by the Geotail satellite are well correlated with the AF index.