河北数字遥测地震台网大震速报震级问题的初步研究  

Study on the magnitude problem in quick report for strong earthquake in Hebei digital telemetered seismic network

作　　者：张从珍[1] 赵明淳[1] 高景春[1] 

机构地区：[1]河北省地震局,河北石家庄050021

出　　处：《华北地震科学》2005年第1期27-31,共5页North China Earthquake Sciences

摘　　要：选取河北数字遥测地震台网自2001年11月正式运行至2004年5月所记录到的河北省及邻区64次较大的速报地震事件,用不同的处理方法分别计算震级并与全国地震月报目录和全国基本台网目录进行了对比分析,认为采用计算机自动读取2个水平分向S波段的振幅和相应周期的最大乘积方法测定速度震级稳定性较好,偏差较小,计算简便,适于大震速报快速有效测定震级的要求。The magnitudes of 64 earthquakes in Hebei and its neighbouring region recorded by Hebei digital telemetered seismic network from Nov. of 2001 to May of 2004 were calculated with different method, and compared with the national monthly catalogue and the catalogue from national basic network. Through comparison we found the velocity magnitude determined from the maximum product method, which read the amplitude of S wave in 2 horizontal directions and its corresponding cycle by computer automatically, is relatively stable. For its small divagation and easy to calculate, it meets the need to determine magnitude effectively in quick report of strong earthquake.

关 键 词：地震台网 大震速报 震级 

分 类 号：P315.7[天文地球—地震学]