江苏地震预警信息服务系统分析  

Analysis of Jiangsu Earthquake Early Warning Information Service System

作　　者：王琛[1] 孙业君[1] 张婷 魏梦婉 李璇 王冬辰 WANG Chen;SUN Yejun;ZHANG Ting;WEI Mengwan;LI Xuan;WANG Dongchen(Jiangsu Earthquake Agency,Nanjing 210014,China)

机构地区：[1]江苏省地震局,江苏南京210014

出　　处：《防灾减灾工程学报》2024年第3期740-744,共5页Journal of Disaster Prevention and Mitigation Engineering

基　　金：江苏省地震局青年科学基金(202406)资助。

摘　　要：对国家地震烈度速报与预警工程江苏预警信息服务系统进行了介绍,分析了2023年6月系统试运行以来的预警信息发布情况。结果显示,预警信息发布的主要延时存在于地震发生到国家一级融合决策系统正式发布预警信息的过程,最短延时为4 s,平均延时为14.358 6 s,江苏省预警系统的预警信息发布各环节延时较少,平均总延时不超过0.9 s,Ⅱ类省级预警中心所在地发生地震后,预警信息发布时延会略长于Ⅰ类。整体来看,江苏地震预警信息服务系统满足时效性要求并具有良好的稳定性,在省预警项目建设完成后,将实现省内破坏性秒级地震预警信息发布与示范服务。This article introduces the Jiangsu Earthquake Early Warning Information Service System,part of the National Earthquake Intensity Rapid Reporting and Early Warning System,and analyzes its performance since the system's trial operation began in June 2023.The results indicated that the pri-mary delay in releasing early warning information occurred between the earthquake event and the offi-cial release of early warning information by the national level integrated decision-making system.The shortest delay observed was 4 seconds,with an average delay of 14.3586 seconds.The Jiangsu Earth-quake Early Warning Information Release System exhibited minimal delays at various stages of infor-mation release,with an average total delay of less than 0.9 seconds.In the event of an earthquake at a Type II provincial early warning center,the release delay would be slightly longer compared to a Type I center.Overall,the Jiangsu Earthquake Early Warning Information Service System meets timeliness requirements and demonstrates good stability.Upon completion of the provincial early warning project,it will enable second-level destructive earthquake early warning information release and demonstration services within the province.

关 键 词：地震预警 信息服务 发布策略 时效分析 

分 类 号：P315[天文地球—地震学]