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根据IMAGE台链的地磁资料,对2000年7月15～16日磁暴期间高纬电离层等效电流和极光带电集流进行了分析,结果表明在磁暴期间,高纬地区出现大尺度等效电流的涡旋结构,午后一侧的电流涡可能对应行星际磁场北向时NBZ场向电流、Ⅰ区和Ⅱ区场向电流共同作用形成的4涡等离子体对流的图像.当行星际磁场转南后,电离层恢复双涡对流,因此在清晨一侧仅可观测到单涡的等效电流体系.Harang不连续带出现在IMAGE台链磁当地时子夜之前,从高纬到低纬该不连续带内电流流向的结构为西向-东向-西向.磁暴初相期间,东向电集流的中心所处纬度往低纬迁移,在修正地磁坐标系(CGM)中,其最低到达58～59°纬度.主相开始后西向电集流迅速增强,其电流中心到达、甚至超过观测台链的最南端(56.45°).
According to the geomagnetic data of the IMAGE chain, the high-level ionospheric equivalent current and the auroral charged current during July -16 July 2000 were analyzed. The results show that large-scale equivalent current Eddy structure, and the eddy current on the afternoon side may correspond to the NBZ field current in the northward direction of the interplanetary magnetic field and the 4-vortex plasma convection image formed by the field currents in the areas I and II. When the interplanetary magnetic field turns south, The ionosphere regresses dual vortex convection so that only one-vortex equivalent current system can be observed in the early morning.Harang discontinuities appear before the midnight of the IMAGE stage magnetosphere, from high latitudes to low latitudes During the first phase of the magnetic storm, the latitude at the center of the current flow to the east migrates towards the low latitudes, reaching a minimum of 58-59 ° latitude in the revised geomagnetic coordinate system (CGM) After the start of the main phase, the westward current collection rapidly increased, and its current center reached even more than the southernmost point of the observatory chain (56.45 °).