【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。更多还原

【Abstract】 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 anomalies like small swarms occurred before Atushi,Jiashi earthquake.更多还原