四川地震编目自动处理系统产出结果分析  

Analysis on the Output Results of the Sichuan Automatic Seismic Catalogue System

作　　者：颜利君 庞瑶 唐淋[1] YAN Lijun;PANG Yao;TANG Lin(Sichuan Earthquake Agency,Sichuan Chengdu 610041,China)

机构地区：[1]四川省地震局,四川成都610041

出　　处：《四川地震》2022年第1期20-23,共4页Earthquake Research in Sichuan

基　　金：四川省地震局地震科技专项(LY2006)。

摘　　要：2019年1月至2020年12月,四川地震编目自动处理系统共触发和分析地震144844条。通过将编目自动处理系统产出结果与四川台网人机交互分析正式目录结果进行对比分析,得出几点结论:编目自动处理系统分析地震事件与台网正式目录地震事件匹配率为32.15%,M_(L)≥3.0地震触发率可达79.18%。匹配的地震事件中80.57%的地震震中位置差不超过5 km,99.04%的地震发震时刻差不超过3 s,89.08%的地震震级差不大于0.3级。编目自动处理系统对地震震相的正确识别率为85.62%,其中Pg、Sg震相识别率较高,能达到84%;初动方向识别率较低,仅能识别特征非常明显的P波初动;Pn、Sn震相误识别情况严重,且该系统不能自动识别面波振幅震相。From January 2019 to December 2020,144844 earthquakes were analyzed by the Sichuan automatic seismic catalogue system.In this paper,we compared the output of the automatic system with the catalogue results that were analyzed by human-computer interactions in Sichuan seismological network.The results show that the matching rate between the two systems is only 32.15%,whereas the recognition rate of M_(L)≥3.0 earthquakes processed by the automatic system is 79.18%.Among the matched seismic events,80.57%of the earthquakes show epicenter locations error within 5 km.Moreover,the differences of the earthquake initiating time in less than 3 seconds are up to 99.04%,whereas 89.08%of the earthquake magnitude differences are less than 0.3.The automatic recognition rate of the all phases is 85.62%.The recognition rate of Pg and Sg is higher than 84%.The recognition rate of the first motion direction is very low,only events with the obvious characteristics in P-waves can be recognized.More Pn and Sn seismic phases are misidentified,and the M_(S) seismic phase can not be recognized automatically.

关 键 词：地震编目自动处理系统 人机交互地震目录 

分 类 号：P3157[天文地球—地震学]