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本文介绍了１９８９年３月一个罕见的强太阳活动区多次暴发引起的强烈电离层“暴群”，结合源耀斑等级、位置、总结了其日面位置自东向西旋转时，电离层暴群形态的规律变化，证实电离层暴扰动强度与耀斑位置有明显的中心子午线效应和东西向不对称性，综合１１５°部分地磁子午台链的北向分量和历史上的２次磁暴和４次电离层暴形态的分析，得到了暴群的中低纬特征，并对“弱扰动槽”的形成机制作了定性讨论。
This paper presents a strong ionospheric “storm cloud” caused by several outbreaks of a rare strong solar activity area in March 1989. Combining with the source flare level and location, the author summarizes that when the Japanese surface rotates from east to west, the ionospheric storm The results show that there are obvious central meridian effect and east-west asymmetry between the intensity of ionospheric disturbance and the location of flare. Based on the analysis of the north component of 115 ° partial geostrophic meso chain and the history of 2 storms and 4 times of ionization The analysis of the stratospheric storm form has obtained the middle and low latitude features of the storm swarm and made a qualitative discussion on the formation mechanism of “weak disturbance trough”.