【摘要】 通过整理中国地震局安徽数字地震台网2013—2022年近十年震相观测报告，采用多台和达法，重点分析和研究了安徽及邻区波速比变化特征。研究发现：“霍山窗”对于安徽地区具有应力调节和能量释放的重要作用；皖中的波速比变化与研究区域整体波速比变化基本一致，空间上波速比自北向南依次增高；将波速比结果进行按月滑动平均，发现研究区域具有明显的波速比周期性变化特征，且在较为明显的波速比下降期内，安徽及周边地区易发生M_S3.0以上地震。更多还原

【Abstract】 By collating the seismic phase observation reports of Anhui Digital Seismic Network of China Earthquake Administration from 2013 to 2022, the characteristics of wave velocity ratio change in Anhui and its adjacent areas are analyzed and studied by using the multi-station Wadati method. It is found that Huoshan window plays an important role in stress regulation and energy release in Anhui area. In addition, the change of wave velocity ratio in central Anhui is basically consistent with the change of the whole wave velocity ratio in the study area, and the spatial wave velocity ratio increases from north to south. According to the monthly sliding average of the wave velocity ratio results,it is found that the study area has obvious periodic change characteristics of the wave velocity ratio, and Anhui and its surrounding areas are prone to M_S3.0 earthquakes during the relatively obvious decline period of wave velocity ratio.更多还原