THE RELATIONSHIP BETWEEN INDICES AE AND Dst
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摘要: 本文对1972年7月至1974年12月的Dst指数和AE指数(时均值)作了初步的统计分析。每半年的资料所得到的相关系数在0.5到0.6之间。当地磁场扰动程度增大时, 即Dst指数的值减小时, 相关系数的值减小。因为Dst指数主要反映赤道环电流的强度, AE指数主要反映极光带电急流的强度, 因此这两个指数间的关系有可能反映这两个电流体系之间的关系。行星际磁场的南北分量Bz对这种关系没有明显的影响。Abstract: In this paper Data of AEand Dst indices from July 1972 to December 1974 have been analyzed for the correlation between these two indices the correlation coefficient of the data for every half year are between 0.5 and 0.6. As the geomagnetic disturbance level increases, that means when the values of the Dst index decreases the correlation coefficient decreases.Since the Dst index mainly reflect the intensity of the equatorial ring current whereas the AEindex mainly reflect the intensity of the auroral electrojet, the correlation between these two indices may reflect the relationship between these two current systems.The results of the correlative analyses also show that the south-north component of the interplanetary magnetic field have no obvious influence on this relationship.
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