应用和达法测定福建古田水口水库ML4.8级地震序列波速比

摘要

应用和达法测定福建古田水口水库ML4.8级地震序列的波速比,其计算的相关系数较高,测得的波速比值具有较高的可信度.通过分析ML4.8级主震前后的波速比发现,在前震期经历了相对稳定—低异常值—回升—加速上升—高异常值—主震发生的过程；余震期波速比高、低异常值增多,且差异有逐渐加大趋势.%In this paper, average seismic wave velocity ratios of Fujian Shuikou reservoir ML4. 8 earthquake sequence is determined using Multi-Station Methods. The correlation coefficient is high and the wave velocity ratio value is reliable. The wave velocity ratios before and after the main shock are analyzed. The result shows that in foreshock period the wave velocity ratios experienced a process of relative stable條ow abnormal values梤ebound梐ccelerated rise梙igh abnormally value梞ain shock occurrence; during the aftershock period, the wave velocity ratio is higher than before, low abnormal values increase, and the differences have increasing trend.