湟源地震台新旧震级对比分析  

THE CONTRAST ANALYSIS OF NEW-OLD MAGNITUDE COMPARISON

作　　者：白永祯 BAI Yongzhen(Qinghai Earthquake Agency,Xining 810001,China)

机构地区：[1]青海省地震局,青海西宁810001

出　　处：《高原地震》2018年第1期24-28,共5页Plateau Earthquake Research

基　　金：青海省地震科学基金项目(课题编号:2017B11)资助

摘　　要：采用新旧震级标度,利用中国地震台网2015年至2017年的观测资料,选取湟源地震台测定的国内5.0级和国外6.0级以上且震中距小于100°的161个地震事件为研究对象,利用JOPENS-6.0和JOPENS-5.2地震分析软件测定新震级标度下短周期体波震级m_(bn)、宽频带体波震级m_(B(BB))、宽频带面波震级M_(S(BB)),与旧震级标度下短周期体波震级m_b、宽频带体波震级m_B、仿真763面波震级M_(S7)进行对比分析。分析结果表明:m_(bn)与m_b基本一致;m_(B(BB))与m_B基本一致;M_(S(BB))比M_(S7)系统偏高0.2个震级单位。Using of new-old magnitude scale,based on the observation data of the China Seismic Network from 2015 to 2017,161 seismic events(with magnitudes in 5.0 earthquakes in China and M≥6.0 earthquakes in International and the epicentral distance is less than 100°)recorded by Huangyuan seismic station were chosen for analysis.Based on JOPENS-6.0 and JOPENS-5.2 two sets of seismic analysis software,the short period body wave magnitude mbn,the wide band body wave magnitude mB(BB),the wide band surface wave magnitude MS(BB)and the short period body wave magnitude mb,the wide band body wave magnitude mB and the wide band surface wave magnitude MS7 were made contrast analysis,the results showed mbn is basically agreed with mb,and mB(BB)is basically agreed with mB,MS(BB)is higher 0.2 magnitudes than MS7.

关 键 词：震级标度 震级 体波震级 面波震级 

分 类 号：P315.3[天文地球—地震学]