【摘要】 利用"双差地震定位法"对2004年6月甘肃临泽发生的地震震群进行了精确定位,结合地质构造资料讨论了本次震群的发震构造。结果表明:该震群震中沿着榆木山北缘断裂呈NNW向分布,震源深度优势分布于10~25 km,平均深度为16.3 km;发震断裂为榆木山北缘断裂东段局部断裂,走向NNW,倾向SW,倾角约为60°。更多还原

【Abstract】 The Linze earthquake swarm in Gansu province in Jun.2004 are relocated using the double-difference earthquake location genetic algorithm,the seismogenic structure is discussed with the data of geological structure.The results show that the distribution of hypocenters stretchs along the north edge of Yumushan fault in NNW direction,the focus depths of the earthquake swarm are mainly distributed in 10～25 km,and the average is 16.3 km.The seismogenic structure is the east section of the fault,whose strike is NNW,the dip direction is SW,and the dip is about 60°.更多还原