【摘要】 应用多台和达法测定福建仙游M_L 4.1地震序列的M_L≥1.5地震波速比,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。分析M_L 4.1主震前后的波速比发现,波速比经历低异常值—回升—相对稳定—下降—主震发生的过程,余震期里出现多次高异常值。更多还原

【Abstract】 The average seismic wave velocity ratios of Xianyou M_L 4.1 earthquake sequence of M_L≥1.5 earthquakes in-Fujian are determined by use of multi-station methods.The correlation coefficient was calculated is high,the measured wave velocity ratio value is with high reliability.It is found by analyzing the wave velocity ratios before and after the main shock that they experienced a procedure of low abnormal values-rebound-relatively stable-decrease and finally the main shock occurred.In the aftershock stage,multiple times high abnormal values appeared.更多还原