北京市地震台网“速度震级”与仿真震级的关系  

The relationship between velocity magnitude and simulated magnitude of Beijing Earthquake Network

作　　者：丁晗[1] 马士振[1] 张伟[1] 王占英[1] 白永福[1] 乔永军[1] 

机构地区：[1]北京市地震局,中国北京100080

出　　处：《地震地磁观测与研究》2007年第3期43-47,共5页Seismological and Geomagnetic Observation and Research

基　　金：北京市自然科学基金(8041001);北京市"十五"重点攻关项目(H030630090190)资助

摘　　要：速度型记录设备的地震速报,一般直接使用记录到的波形数据计算震级(速度震级)。编写台网观测报告,需要把速度波形仿真成位移后再计算震级(仿真震级)。本文利用北京市地震台网2003年以来1000多条记录,以全网、单台两种方式研究了上述两种震级的关系,结果表明。它们之间存在很好的线性关系,且与震中距、台基、设备等因素有关。建议在速报阶段,可用震级差和线性关系两种方法对仿真震级进行估计。The earthquake rapid report by the velocity recording facilities commonly uses the waveform data to calculate the earthquake magnitude （velocity magnitude）. It needs simulating the velocity waveform into displacement to calculate magnitude （simulated magnitude）, while we compile the station network observation report. It studies on the relationship of the above two magnitudes according to over 1 000 records of Beijing Earthquake Network since 2003, by means of whole network and single station. The result shows that they have the good linear relations and relate to the factors of epicentral distance, station structure, facilities and so on. The article suggests estimating simulated magnitudes by ways of magnitude difference and linear relation.

关 键 词：速度震级 仿真震级 线性关系 震级差 

分 类 号：P315.63[天文地球—地震学]