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用取自１００°Ｅ和３００°Ｅ的两条地磁经度链附近１１个台站的１ｍｉｎ均值地磁资料，分析了１９９４年１１月２６日磁暴期间的磁扰特征，由Ｈ和ｚ分量演变得知。一区和二区场向电流的变化发展是碰层－电离层电动耦合中的重要过程，它们对于极光区和中低纬区电离层的作用效果有很大差异二在不同经度链上的影响也有所不同．耦合能量和二区场向电流的屏蔽效应使极光区电离层扰动电流突增，并使夜间中低纬区出现短时间的东向电流成分增加，其持续时间约为０．５ｈ．中低纬区夜间的东向电场又可通过Ｅ×Ｂ的垂直向上漂移作用抬升Ｆ层等离子体，从而出现同一经度链附近的多站ｈ’Ｆ同时突增现象．
The magnetic disturbance characteristics during the geomagnetic storm on November 26, 1994 were analyzed using the 1-min mean geomagnetic data from 11 stations near two geomagnetic longitude chains taken at 100 ° E and 300 ° E. The magnetic disturbance characteristics were analyzed from the H and z components . The development of the field current in zone one and zone two is an important process in the contact layer-ionospheric electric coupling, and their effect on the ionosphere in the auroral zone and in the mid-low latitudes is very different. Effects on different longitude chains Also different. The shielding effect of the coupling energy and the two field currents makes the ionospheric disturbance current in the auroral region suddenly increase, and increases the short-term eastward current component in the mid-low latitudes of the night. Its duration is about 0.5h. In the mid-low latitudes, the eastward electric field in turn can lift the F-layer plasma through vertical upward drift of E × B, resulting in the simultaneous abrupt increase of multi-stations h'F near the same longitude.