用不同方法评估山西地震台网的监测能力  

Evaluating the Monitoring Capability of the Shanxi Seismic Network Using Different Methods

作　　者：梁向军[1,3] 吴叔坤[2] 王霞[1,3] 刘林飞[1,3] LIANG Xiangjun;WU Shukun;WANG Xia;LIU Linfei(Shanxi Earthquake Agency,Taiyuan,Shanxi 030021,China;Guangdong Earthquake Agency,Guangzhou,Guangdong 010010,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]广东省地震局,广东广州010010 [3]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1期38-43,共6页Earthquake Research in Shanxi

基　　金：山西省地震局科研项目(SBK-2118)。

摘　　要：基于山西数字地震台网2015—2019年记录的地震目录及观测报告数据,采用“基于概率的完整性震级”PMC方法、震级—序号法、最优拟合度(GFT)法和最大曲率法等多种方法分别评估山西地震台网的监测能力。结合山西测震台网的实际情况和不同评估方法的计算原理进行对比分析,结果显示,部分台站围限的区域能监测到M L1.0及以下的地震外,其余区域的监测能力下限为M L1.5;“基于概率的完整性震级”方法更适合用于评估山西地震台网的监测能力。随着预警台网的正式运行,建议采用该方法对地震预警台网的实际监测能力重新评估。Based on the earthquake catalog and observation report data recorded by the Shanxi digital seismic network from 2015 to 2019,various methods including the"Probability-based Completeness Magnitude"(PMC)method,Magnitude-Number(M-N)method,Goodness-of-Fit Test(GFT)method,and the Maximum Curvature(MAXC)method are used to evaluate the monitoring capability of the Shanxi seismic network.A comparative analysis is conducted by considering the actual conditions of the Shanxi seismic network and the computational principles of different evaluation methods.The results show that apart from the areas confined by certain stations where earthquakes of ML1.0 and below can be detected,the lower limit of monitoring capability for other regions is ML1.5.The"Probability-based Completeness Magnitude"method is more suitable for evaluating the monitoring capability of the Shanxi seismic network.With the official operation of the early warning network,it is recommended that this method be used to re-evaluate the actual monitoring capability of the earthquake early warning network.

关 键 词：监测能力 山西地区 PMC方法 震级—序号法 最优拟合度法 

分 类 号：P315.73[天文地球—地震学]