【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。更多还原

【Abstract】 The earthquake rapid report by the velocity recording facilities commonly uses the wave- form 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 1000 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,facili- ties and so on.The article suggests estimating simulated magnitudes by ways of magnitude difference and linear relation.更多还原