摘要
1990年4月17日乌恰6.4级地震序列有以下特征:(1)主震型序列;(2)强余震前小地震震中向强余震的震中附近迁移;(3)余震频度衰减快;(4)余震在主震和最大余震之间活动;(5)较大余震存在“密集-平静-发震”的规律;(6)存在晚期较强余震。
After studing the sequence of Wuqia 6. 4 earthquake ,we got the following features(1) Sequence for main shock type;(2) Migration of small earthquakes epicentres towards strong aftershock epicentres before the strong aftershock occurrence;(3) The quick attenuation of aftershock frequency;(4) Aftershock activity between main shock and maximum aftershock;(5) Regulation of 'Dense-quiet-occurrence' for large aftershocks;(6) Stronger aftershock in the later period of the sequence.
出处
《内陆地震》
1991年第4期352-357,共6页
Inland Earthquake
关键词
新疆
地震序列
地震
震级
Xinjiang Wuqia Earthquake sequence The characteristics of the sequence
