安徽台网自动地震定位系统结果评估  

Evaluation of the results of automatic earthquake location systems of Anhui network

作　　者：郁建芳[1] 袁勇 夏仕安[1] 韩成成[1] Yu Jianfang;Yuan Yong;Xia Shian;Han Chengcheng(Anhui Earthquake Agency,Hefei 230031,China)

机构地区：[1]安徽省地震局,合肥230031

出　　处：《地震科学进展》2021年第3期112-121,共10页Progress in Earthquake Sciences

基　　金：安徽省地震科技创新专项(CX202003)资助。

摘　　要：目前,安徽台网正在运行的自动地震定位系统包括中国地震局自动地震速报系统(AU)、江苏省地震局自动定位系统、福建省地震局自动定位系统和安徽区域地震预警系统。以2015—2019年安徽及周边省份发生的地震实例为研究对象,将上述4套系统产出的结果分别与中国地震局统一正式目录对比,结果表明这4套系统产出的结果均在地震速报要求所允许的误差范围内,在安徽区域具备适用性和实用性,但在识别双震等方面存在缺陷。同时,这几套系统之间的对比结果表明,安徽区域预警系统产出结果参数的平均发震时刻差、平均震中位置差和平均震级差都相对较小。At present,the automatic earthquake positioning systems operated by Anhui network include the automatic earthquake report system(AU)of China Earthquake Administration,the automatic positioning system of Jiangsu,the automatic positioning system of Fujian and the Anhui regional earthquake early warning system.Taking the earthquake cases in Anhui and its surrounding provinces from 2015 to 2019 as the research object,the results of the above four sets of system have been compared with the unified official catalogue of China Earthquake Administration respectively.The results show that the outputs of these automatic systems are all within the error range allowed by the seismic fast reporting requirements,and they all have applicability and practicability in Anhui region,while there are some defects in identifying double earthquakes and false triggering by remote earthquakes.At the same time,the comparison and analysis among these systems show that the average time of the first reported positioning results produced by Anhui regional earl warning system is 15.26 seconds,and the average of the final reported positioning results is 46.56 seconds.This system has obvious advantages in the speed of automatic quick reporting,the average seismic time difference,the average epicenter position difference,and average magnitude difference of the output parameters.

关 键 词：自动地震速报 实时地震定位 地震参数 定位结果评估 

分 类 号：P315[天文地球—地震学]