灌云地震台面波震级偏差分析  

Magnitude deviation analysis for surface wave magnitude determined by Guanyun Seismic Station

作　　者：倪昊琦 周文杰 董传雷 陈露玥 钱婷 NI Haoqi;ZHOU Wenjie;DONG Chuanlei;CHEN Luyue;QIAN Ting(Jiangsu Earthquake Agency,Nanjing 210014,China)

机构地区：[1]江苏省地震局,南京210014

出　　处：《地震地磁观测与研究》2023年第3期34-39,共6页Seismological and Geomagnetic Observation and Research

基　　金：江苏省地震局科技创新团队项目(项目编号:202201)。

摘　　要：选取2019年1月—2021年12月灌云地震台远震事件记录,将灌云地震台测算的面波震级与中国地震台网中心统一正式报目录震级进行对比,计算二者面波震级偏差平均值,并分析震级偏差与震级、震中距、震中方位之间的关系。结果表明:灌云地震台面波震级与中国地震台网中心统一正式报目录震级平均偏差为-0.08,总体偏差较小,表明该台地震记录精度较高。In this paper,the surface wave magnitude of teleseismic events recorded by Guanyun Seismic Station from January 2019 to December 2021 is selected to compare with the magnitude determined by China Earthquake Networks Center.The average deviation of their surface wave magnitude is calculated,and the relationship between magnitude deviation and magnitude,epicentral distance,and epicenter orientation is analyzed.The results show that the average deviation between the magnitude determined by Guanyun Seismic Station and the China Earthquake Networks Center is-0.08,with a small over all deviation and reliable recording accuracy.

关 键 词：灌云地震台 面波震级 偏差分析 

分 类 号：P315.32[天文地球—地震学]