大连地震台数字化面波震级M的研究  

Study of Surface Wave Magnitude M Determined by Digital Seismic Data from Seismological Station of Dalian

作　　者：李茂林[1] 李勇[1] 侯永骏[1] 

机构地区：[1]辽宁省大连地震台,辽宁大连116012

出　　处：《山西地震》2008年第2期14-18,共5页Earthquake Research in Shanxi

摘　　要：选用了大连地震台CTS-1甚宽频带数字仪记录到的全球2002年至2005年M≥4.7地震共1471次。把中国地震局地球物理研究所编纂的《中国数字地震台网观测报告》给出的震级,与大连地震台所测定的仿真SK和763的面波震级Ms和Ms7进行了对比分析,得出了不同震级区间和震中距区间的面波震级台基校正值,供实际工作中参考使用,以提高地震速报的精度。Totally 1471 earthquakes M≥4. 7 from 2002 to 2005, recorded by CTS-1 wideband digital seismograph at the Seismological Station of Dalian, are selected. The magnitudes given by 《China Digital Seismological Network Observation Report》 compiled by Geophysical Institute of Earthquake Administration of China are compared with surface wave magnitudes M,and M,7 determined by simulation of SK and 763 for data recorded at the Seismological Station of Dalian. Station Corrections of different magnitude ranges and different epicenter distance ranges are worked out, which provide reference for practical work and improve precision of earthquake rapid prediction.

关 键 词：数字化 面波震级 偏差 校正值 

分 类 号：P315.3[天文地球—地震学]