【摘要】 利用所搜集新疆地震台网各种短周期 Pg和 Pn波初动方向资料和中国数字地震台网( CDSN)、全球数字地震台网 ( GDSN)及中亚地区部分资料 ,计算了新疆阿图什 1 996年 6.9级和1 998年 6.0级地震、伽师 1 997～ 1 998年 6次强震 ,以及 MS≥ 4.0中小地震震源机制解 48个。结合伽师强震群地震时空分布、地震烈度 ,对该区域应力场进行了探讨。结果表明 ,该区域应力场主压应力方向为 SW- NE向。更多还原

【Abstract】 Employing the data of short period Pg and Pn wave onsets from Xinjiang Seismic Network, China Digital Seismic Network, Global Digital Seismic Networks, and those from Mid Asian region, we obtained 48 focal mechanism solutions, among them 6 strong earthquakes from 1997 to 1998 and the others are M S ≥4.0 moderately small earthquakes. We explored the characteristics of regional stress field with the spatial temporal distribution and seismic intensity of the Jiashi strong earthquake swarm. The result shows that the principal compressional stress field is in the SW NE direction.更多还原