【摘要】 本文根据地震P波初动资料,使用中国地震局推广的"基于GIS地震分析预报系统"提供的用地震初动符号求解震源机制的方法,求解了2002年4月30日营口～海城震群中4个ML≥3 0地震的单个震源机制解,同时用59个地震和213个P波初动资料,得到该区小震综合断层面解,并将其结果与1999年11月29日岫岩-海城Ms5 4地震序列中4级以上的震源机制结果进行了比较研究。更多还原

【Abstract】 On the basis of P wave first motion of earthquake by using"earthquake analysis forecast system on GIS"which was spread by Seismological Bureau of China.It provides the way of obtain the focal mechanism solutions by the earthquake beginning move sign by which we take the single focal mechanism solution of 4 earthquakes which are M_L≥3.0 of Yingkou-Haicheng earthquake swarm on April 30th 2002.At the same time we got the focal mechanism solutions of small earthquakes synthesis in this region by using 59 earthquakes and P wave first motion of 213 earthquakes.And we have made a study and compare of the result and the focal mechanism solution of all earthquakes of Xiuyan-Haicheng M_s 5.4 earthquake sequence on November 29th 1999.更多还原