IASPEI宽频带面波震级与传统面波震级的对比  

Comparison between the IASPEI Standard Broadband Surface Wave Magnitude and Traditional Surface Wave Magnitude

作　　者：杨晶琼[1] 杨周胜[1] 蔡明军[1] 许亚吉[1] 梁勇[1] 

机构地区：[1]云南省地震局,云南昆明650224

出　　处：《地震研究》2016年第2期303-307,共5页Journal of Seismological Research

基　　金：中国地震局"测震台网青年骨干培养专项"(20120104)资助

摘　　要：应用IASPEI新推荐的宽频带面波震级M_S（BB）标准,选取云南数字地震台网记录到的2000~2011年云南及周边地区4.0级以上的433个地震事件为研究对象,测定其宽频带面波震级M_S（BB）,同时也重新测定面波震级M_S,并采用线性回归和正交回归方法,对M_S（BB）与M_S进行对比分析研究,得到了它们之间的回归关系式。结果表明：M_S比M_S（BB）系统偏高,当震级较大时,二者之间差别也偏大。We applied the newbroadband surface wave magnitude MS（ BB）standard recommended by IASPEI to determine the broadband surface wave magnitude M_S（ BB）,and re-determine the surface wave magnitude MSof the selected 433 M≥4. 0 seismic events in Yunnan and its adjacent area recorded by Yunnan Digital Seismic Network from 2000 to 2011. Then we compared and analyzed M_S（ BB）and MSby using linear regression and orthogonal regression method,and obtained the relationship between them. The results showthat MSis higher than the M_S（ BB）for the same earthquake,and the difference between them is large when the magnitude is lager.

关 键 词：宽频带面波震级MS(BB) 面波震级MS 震级测定 震级转换 

分 类 号：P315.6[天文地球—地震学]