山西阳高M3.9地震预警系统未触发台站的检测分析  

Analysis of the Reasons for the Failure to Trigger Stations in the Shanxi Yanggao M3.9 Earthquake Early Warning System

作　　者：李晨 梁永烨 陈永新[1,2] 刘炜 冯凯宇 LI Chen;LIANG Yongye;CHEN Yongxin;LIU Wei;FENG Kaiyu(Shanxi Seismological Station of Shanxi Earthquake Agency,Taiyuan,Shanxi 030021,China;National Continental Rift Valley Dynamics Observatory of Taiyuan,Taiyuan,Shanxi 030025,China)

机构地区：[1]山西省地震局,山西太原030021 [2]太原大陆裂谷动力学国家野外科学观测研究站,山西太原030025

出　　处：《山西地震》2024年第3期9-14,共6页Earthquake Research in Shanxi

摘　　要：国家地震烈度速报与预警工程山西子项目自建成以来,已产出多次地震预警信息。在预警系统进行数据处理时,存在少量台站距离震中较近但未触发(未参与数据计算)的现象。通过对2024年5月19日山西阳高M3.9地震事件中未触发站点在参数设置、数据传输延时、观测数据质量、观测环境等方面可能原因进行分析讨论,可以得出,未触发台站的各项配置正确,观测质量达标,其原因可能与信噪比未满足震相识别中的阈值有关。The Shanxi subproject of the National Seismic Intensity Rapid Reporting and Early Warning Project has produced a number of earthquake early warning messages since its completion.However,during the data processing of the warning system,there are a few stations that are close to the epicenter but have not been triggered(not involved in data calculation).Through analysis and discussion of the possible reasons for the non triggering of the station parameters,data transmission delay,observation data quality,observation environment,and other aspects of the M3.9 earthquake event in Yanggao,Shanxi on May 19,2024,it is concluded that the correct configuration and observation quality standards of the non triggering station may be related to its signal-to-noise ratio not meeting the threshold for seismic phase identification.

关 键 词：地震预警 未触发台站 检测分析 

分 类 号：P315.62[天文地球—地震学]