用经验格林函数法和随机方法模拟卢龙地震的比较
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摘要
在介绍用经验格林函数方法和随机方法模拟地震动的基础上,分别用这两种方法模拟了卢龙5.7级地震。模拟结果表明,用经验格林函数方法模拟地震动的结果与地震记录符合得很好。用随机方法模拟地震动在高频部分与地震动记录符合得比较好,而在中、低频部分符合得不太好。两种方法比较,经验格林函数方法模拟的结果更符合实际记录。但随机方法具有计算简单、无需小震记录的优点,因此发展随机的方法是有意义的。随机方法中中、低频部分不太符合的原因是随机方法中的很多经验关系是在美国大陆得到的。因此建议加强对中国大陆经验关系的研究,并把中国大陆的经验关系加入到随机方法中,使随机的方法成为中国大陆普适的模拟地震动的方法。
The ground motions of Lulong Earthquake(ML=5.7) are simulated with the empirical Green function method and stochastic method,respectively.The results show that the ground motion simulated by empirical Green function is consistent with the records very well and the ground motion stimulated by stochastic method is consistent with the records in high frequencies,and is not consistent with the records very well in middle and low frequencyies.To compare the two methods,the results calculated from empirical Green function are more suitable for China main land and the stochastic method has two advantages: simple computation and may be used without small earthquakes.Furthermore,the results simulated by stochastic method is not suitable to records in low and middle frequencies,because the used experiential relations were gotten from America continent.So,we suggest to study the experiential relations on Chinese continent and use the experiential relations to the stochastic method and make this method suitable for Chinese continent.
The ground motions of Lulong Earthquake(ML=5.7) are simulated with the empirical Green function method and stochastic method,respectively.The results show that the ground motion simulated by empirical Green function is consistent with the records very well and the ground motion stimulated by stochastic method is consistent with the records in high frequencies,and is not consistent with the records very well in middle and low frequencyies.To compare the two methods,the results calculated from empirical Green function are more suitable for China main land and the stochastic method has two advantages: simple computation and may be used without small earthquakes.Furthermore,the results simulated by stochastic method is not suitable to records in low and middle frequencies,because the used experiential relations were gotten from America continent.So,we suggest to study the experiential relations on Chinese continent and use the experiential relations to the stochastic method and make this method suitable for Chinese continent.
引文
[1]Harzell S H.Earthquake aftershock as Green’s function[J].Geophys.R E.let,1978,5(1):1-4.
[2]Irikura K.Semi-empirical estimation of strong ground motions during large earthquakes[J].Bull.Disaster Prevention Research Institute,KyotoUniv.,1983,33(2):63-104.
[3]Kanamori H.A semi-empirical approach to prediction of long-period ground motions from great earthquake[J].BSSA,1979,69(6):1654-1670.
[4]Hadley D M,Helmberger D V.Simulation of strong ground motions[J].BSSA,1980,70(2):617-630.
[5]Hartzell S H.Simulation of ground accelerations for the May1980 Mammoth Lakes,California,earthquakes[J].BSSA,1982,72(6A):2381~2387.
[6]Munguia L,Brune J.Simulation of strong ground motion for earthquakes in the Mexicali-Imperial Valley region[J].Geophys.J.Royal Astro.Soc.,1984,79(3):747-771.
[7]张敏政.近场强地震动工程参数的估计[D].哈尔滨:国家地震局工程力学研究所,1986.
[8]Tanaka D K T,Wtanabe T.Simulation and prediction of strong ground motion in epicentral region of the 1979 Imperial Valley earthquake by semi-empirical method[J].Journal of Structural and Construction Engineering(Transactions of AIJ),1987,52:373:50-62.
[9]廖振鹏魏颖.设计地震加速度的合成[J].地震工程与工程振动,1988,8(1):12-31.
[10]罗奇峰.近场加速度的半经验合成[D].哈尔滨:国家地震局工程力学研究所,1989.
[11]罗奇峰胡聿贤.改进的经验格林函数法和卢龙近场加速度合成[J].地震工程与工程振动,1990,10(3):1-13.
[12]金星.从震源非均匀性考虑合成设计加速度时程[D].哈尔滨:国家地震局工程力学研究所,1989.
[13]金星.重大工程场地设计地震动与地震动场的研究[D].哈尔滨:国家地震局工程力学研究所,1992.
[14]Hanks TC.B valueω-rseismic source models:implication for tectonic stress variations along active crustal fault zones and the estimation of highfrequency strong ground motion[J].J.Geophys.Res.,1979,84(B5):2235-2242.
[15]McGuire R K,Hanks TC.RMS accelerations and spectral amplitudes of strong ground motion during the San Fernando,California,earthquake[J].BSSA,1980,70(5):1907-1919.
[16]Brune J N.Tectonic stress and the spectra of seismic shear waves from Earthquakes[J].J.Geophys.Res.,1970,75:4997-5009.
[17]Brune J N.Correction[J].J.Geophys.Res.,1971,76(20):5002.
[18]Boore D M.Simulation of ground motion using the stochastic method[J].Pure appl.Geophys,2003,160(3-4):635-676.
[19]Haskell N A.Radiation pattern of surface waves from point source in a multi-layered medium[J].BSSA,1964,54(1):377-393.
[20]Atkinson G M,Boore D M.Ground motion relations eastern for North America[J].BSSA,1995,85(1):17-30.
[2]Irikura K.Semi-empirical estimation of strong ground motions during large earthquakes[J].Bull.Disaster Prevention Research Institute,KyotoUniv.,1983,33(2):63-104.
[3]Kanamori H.A semi-empirical approach to prediction of long-period ground motions from great earthquake[J].BSSA,1979,69(6):1654-1670.
[4]Hadley D M,Helmberger D V.Simulation of strong ground motions[J].BSSA,1980,70(2):617-630.
[5]Hartzell S H.Simulation of ground accelerations for the May1980 Mammoth Lakes,California,earthquakes[J].BSSA,1982,72(6A):2381~2387.
[6]Munguia L,Brune J.Simulation of strong ground motion for earthquakes in the Mexicali-Imperial Valley region[J].Geophys.J.Royal Astro.Soc.,1984,79(3):747-771.
[7]张敏政.近场强地震动工程参数的估计[D].哈尔滨:国家地震局工程力学研究所,1986.
[8]Tanaka D K T,Wtanabe T.Simulation and prediction of strong ground motion in epicentral region of the 1979 Imperial Valley earthquake by semi-empirical method[J].Journal of Structural and Construction Engineering(Transactions of AIJ),1987,52:373:50-62.
[9]廖振鹏魏颖.设计地震加速度的合成[J].地震工程与工程振动,1988,8(1):12-31.
[10]罗奇峰.近场加速度的半经验合成[D].哈尔滨:国家地震局工程力学研究所,1989.
[11]罗奇峰胡聿贤.改进的经验格林函数法和卢龙近场加速度合成[J].地震工程与工程振动,1990,10(3):1-13.
[12]金星.从震源非均匀性考虑合成设计加速度时程[D].哈尔滨:国家地震局工程力学研究所,1989.
[13]金星.重大工程场地设计地震动与地震动场的研究[D].哈尔滨:国家地震局工程力学研究所,1992.
[14]Hanks TC.B valueω-rseismic source models:implication for tectonic stress variations along active crustal fault zones and the estimation of highfrequency strong ground motion[J].J.Geophys.Res.,1979,84(B5):2235-2242.
[15]McGuire R K,Hanks TC.RMS accelerations and spectral amplitudes of strong ground motion during the San Fernando,California,earthquake[J].BSSA,1980,70(5):1907-1919.
[16]Brune J N.Tectonic stress and the spectra of seismic shear waves from Earthquakes[J].J.Geophys.Res.,1970,75:4997-5009.
[17]Brune J N.Correction[J].J.Geophys.Res.,1971,76(20):5002.
[18]Boore D M.Simulation of ground motion using the stochastic method[J].Pure appl.Geophys,2003,160(3-4):635-676.
[19]Haskell N A.Radiation pattern of surface waves from point source in a multi-layered medium[J].BSSA,1964,54(1):377-393.
[20]Atkinson G M,Boore D M.Ground motion relations eastern for North America[J].BSSA,1995,85(1):17-30.
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