论文部分内容阅读
使用由地震记录 P波初至波符号求取的小震综合机制解资料 ,分析研究了华北地区 4次中强地震前震源区及其附近小震应力场的动态变化。结合前人的有关研究成果 ,综合归纳了中、强地震前震源区及附近应力场的动态演变特征 ,并尝试给出了小震综合机制解参数预报地震的判据指标。
Using the data of the small earthquake comprehensive solution obtained from the first arrival wave symbol of the P wave in the seismogram, the dynamic changes of the stress field in the focal region and the small earthquakes before the 4 moderately strong earthquakes in North China were analyzed. Combined with the related research results of predecessors, the dynamic evolvement characteristics of the stress field near the strong earthquakes before and during the strong earthquakes are summed up. Finally, the criterion for the earthquake prediction of the complex earthquakes with small earthquakes is given.