IASPEI新标准体波震级分析研究
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摘要
应用IASPEI新推荐的体波震级标准,选取2001~2007年国家地震台网48个台记录到的震中距小于100°的564个地震事件为研究对象,测定短周期体波震级mb和宽频带体波震级mB(BB),并使用正交回归方法对IASPEI新标准体波震级与中国地震台网传统的短周期体波震级mbc、中长周期体波震级mBc及哈佛大学矩震级MW进行对比分析研究。分析结果表明:对于mb6.0以下地震,mb和mbc基本一致;对于mb6.0以上地震,mb比mbc偏大;对于mB(BB)7.0以下地震,mB(BB)比mBc偏大0.2~0.4,对于mB(BB)7.0以上地震,mB(BB)和mBc基本无偏差;对于4.5By using IASPEI new body wave magnitude standards,body wave magnitudes m_b and m_B(BB) of 564 earthquakes with epicentral distances less than 100° are measured on the basis of observations from 48 China seismograph network stations between 2001 and 2007.A systematic comparison research of magnitudes is made between body wave magnitudes determined by using IASPEI new body magnitude standards(m_b,m_B(BB)) and China traditional body magnitude standards(m_bc,m_Bc) and HARV moment magnitude(M_W) by using orthogonal regression method.The result of orthogonal regression shows m_b and m_bc are basically identical for m_b<6.0 earthquakes.For M>6.0 earthquakes,m_b is greater than m_bc.For M<7.0 earthquakes,m_B(BB)(IASPEI) is greater by 0.2～0.4 than m_Bc.For M>7.0 earthquakes,there is no significant difference between m_B(BB) and m_Bc.m_B(BB) is nearly consistent with M_W for 4.5
引文
陈运泰、刘瑞丰,2004,地震的震级,地震地磁观测与研究,25(6):1~11。
刘瑞丰、陈运泰、Peter Bormann等,2006,中国地震台网与美国地震台网测定震级的对—Ⅰ.体波震级,地震学报,28(1):1~7。
国家地震局,1990,地震台站观测规范,北京:地震出版社。
中国地震局,2003,地震参数——数字地震学在地震预报中的应用,北京:地震出版社。
Carroll R I,Ruppert D.The use and misuse of orthogonal regression in linear errors-in-variables models.The American Statistician,1996,50(1):1~6.
IASPEI,2005,Summary of Magnitude Working Group recommendations on standard procedures for determining earthquake magnitudesfrom digital data,http://www.iaspei.org/commissions/CSOI.html
Gutenberg B.,1945a,Amplitude of surface waves and magnitude of shallow earthquakes.Bull Seism Soc Amer,35:3~12.
Gutenberg,B.,1945b,Amplitudes of P,PP and S magnitude of shallow earthquakes.Bull.Seism.Soc.Amer.,35:57~69.
Madansky.A,1959,The fitting of straight lines when both variables are subject to error.J Amer Statist Assoc,54:173~205.
Fuller,W.A.,1987,Measurement Error Models.New York,Wiley.
刘瑞丰、陈运泰、Peter Bormann等,2006,中国地震台网与美国地震台网测定震级的对—Ⅰ.体波震级,地震学报,28(1):1~7。
国家地震局,1990,地震台站观测规范,北京:地震出版社。
中国地震局,2003,地震参数——数字地震学在地震预报中的应用,北京:地震出版社。
Carroll R I,Ruppert D.The use and misuse of orthogonal regression in linear errors-in-variables models.The American Statistician,1996,50(1):1~6.
IASPEI,2005,Summary of Magnitude Working Group recommendations on standard procedures for determining earthquake magnitudesfrom digital data,http://www.iaspei.org/commissions/CSOI.html
Gutenberg B.,1945a,Amplitude of surface waves and magnitude of shallow earthquakes.Bull Seism Soc Amer,35:3~12.
Gutenberg,B.,1945b,Amplitudes of P,PP and S magnitude of shallow earthquakes.Bull.Seism.Soc.Amer.,35:57~69.
Madansky.A,1959,The fitting of straight lines when both variables are subject to error.J Amer Statist Assoc,54:173~205.
Fuller,W.A.,1987,Measurement Error Models.New York,Wiley.
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