河北预警网地震预警处理系统运行现状  

Analysis on the Operation Status of Earthquake Early Warning Processing System of Hebei Province

作　　者：王亚玲 毛国良 蒋宏毅 王宁 蔡玲玲 WANG Yaing;MAO Guoiang;JIANG Hongyi;WANG Ning;CAI Linging(Hebei Hongshan National Observatory on Thick Sediments and Seismic Hazards,Xingtai 050000,China;Hebei Earthquake Agency,Shijiazhuang 050000,China)

机构地区：[1]河北红山巨厚沉积与地震灾害国家野外科学观测研究站,河北邢台050021 [2]河北地震台,石家庄050021

出　　处：《华北地震科学》2023年第3期43-51,共9页North China Earthquake Sciences

基　　金：河北省地震局星火青年项目(DZ2021121600009);中国地震局地震科技星火计划项目(XH21003Y)。

摘　　要：基于试运行以来触发预警系统的地震事件,分别统计并分析JEEW、EEW系统的记录及报送数据,结果表明,①JEEW系统首报用时均在10 s以内,震级偏差平均值为0.69,震中距偏差均在10 km以内,偏差在5 km内占比达89.36%;EEW系统首报用时在10 s以内占比为64.7%,震级偏差均值为0.60,震中距偏差在10 km以内,占比为76.47%;②编目震级M3.0以上地震事件,JEEW系统结果显示:首报用时在4~6 s,震级偏差0.3~0.6,震中位置偏差值0.7~3.5 km;EEW系统结果显示:首报用时在3~8 s,震级偏差值0.0~0.6,震中位置偏差值1.0~5.2 km,因此,3级以上地震事件预警用时较短,定位结果相对精确。This paper is based on the earthquake events issued by the early warning system since the trial operation.The processing records of JEEW and EEW processing systems were counted and analyzed respectively,the results are as follows:①the first report time of JEEW system is less than 10 seconds.The mean magnitude deviation was 0.69.The deviations of epicentral distance were all within 10 kilometers,and the deviations within 5 kilometers accounted for 89.36%.The first report time of EEW system within 10 seconds accounted for 64.7%,the mean magnitude deviation was 0.6,and the deviations of epicentral distance within 10 kilometers accounted for 76.47%.②For the earthquake events with magnitude≥M3.0,the results of the JEEW system show that the first alarm time is 4~6 s,the magnitude deviation is 0.3~0.6,and the epicenter location deviation is 0.7~3.5 km.The result of EEW system shows that the first alarm takes 3~8 s,the magnitude deviation is 0.0~0.6,and the epicenter location deviation is 1~5.2 km.Therefore,the seismic event warning time in this magnitude range is short and the location result is relatively accurate.

关 键 词：河北预警网 JEEW系统 EEW系统 产出结果对比 

分 类 号：P315.6[天文地球—地震学]