2011年8月11日新疆阿图什、伽师交界5.8级地震序列及震前部分地震学异常特征

摘要

介绍了2011年8月11日新疆阿图什、伽师交界5.8级地震基本参数、地震序列特征,分析了震前震区周围及相邻构造区地震活动特征.研究结果表明:(1)5.8级地震发生在柯坪断裂,震源断错类型为逆冲型；(2)该地震序列为主-余型,余震衰减较快；(3)地震活动表明震前存在4级地震围空、地震平静、中等地震增强、地震学参数时间扫描异常等中期异常和小震群活动短期异常.%This paper introduced basic parameters and earthquake sequence characteristic of Atushi, Jiashi earthquake with Ms5. 8 on Aug 11th,2011. According to characteristics of seismic activity in earthquake region and nearby tectonic region , the results showed: ( 1 ) the causative structure is Keping fault and the earthquake is thrust type; (2 ) the earthquake belongs to main shock-after shock type and the aftershock attenuation is quickly; (3) there are mid-term anomalies such as; seismic gap, seismic quiescence, moderate earthquakes increasing and seismic parameters, also short-term a-nomalies like small swarms occurred before Atushi, Jiashi earthquake.