福建仙游震群活动发展趋势初步分析和讨论

【摘要】 福建仙游金钟水库2010年5月下闸蓄水,2010年8月开始在库区附近就发生地震序列活动。本文根据仙游地震序列,将仙游地震分为五组不同活跃期,通过对不同阶段地震的序列参数、震中空间分布特征、、震源机制解特征、区域应力场特征的分析,结合水库诱发地震的特点,初步认为:仙游地震活动将持续较长时间,地震活动水平仍会有起伏,地震主要受区域构造应力场的影响,未来一段时间在金钟库区还有可能发生4级左右地震的可能。更多还原

【Abstract】 Fujian Xianyou JinZhong Reservoir impounded in May 2010, it began the earthquake sequence activity near the reservoir area in August 2010. According to the sequence of Xianyou earthquake, the paper divides it into five groups with different active periods. Through the sequence parameters of different stages of the earthquake, the spatial distribution characteristics of epicentones, the depth of the source, the characteristics of the focal mechanism, the regional stress field, combining with the characteristics of reservoir-induced earthquake, the paper holds the initial view that: Xianyou earthquake activity will last for a relatively long time, and its level will continue to fluctuate. The earthquake is mainly affected by the regional tectonic stress field,consequently, in the next period of time in the Jin Zhong area may also occur around ML4.0 earthquake.更多还原