大同盆地6级～6(1/2)级地震活动与华北北部7级左右地震的关系

Relationship between M 6～612 Seismicity in Datong Basin and Earthquakes about M 7 0 in the North of North China

论述了大同盆地中强地震活动的时空特点及与华北北部中强地震活动之间的关系，发现在时间进程中，大同盆地的中强地震活动受华北强震活动周期的制约；在空间分布上与华北北部中强地震成丛活动密切相关。得出１９８９年大同—阳高６．１级地震后，与大同盆地相邻的忻定盆地。

The space time characteristics of the moderately strong seismicity in Dotong basin and its relationship with the moderately strong seismicity in the north of North China are discussed,it is discovered that the mode rately strong seismicity in Datong basin has been controled by the period of the strong seismicity of North China in the time process,and is closed relation with the cluster grouping of the moderately strong earthquake in the north of North China in space distribution.The conclusion is obtained that the risk about M 612 earthquake occurrence in Xinding basin and Yanhuai basin will increase.