利用二次相关时延检测方法提升气枪信号时延估计精度的研究
|
摘要
由于观测台站距离较远、观测环境不佳以及前处理过程的干扰等因素,气枪主动源部分台站的格林函数信噪比较低,波速变化检测结果误差较大。利用二次相关时延检测,先经模拟测试,再将其应用到宾川主动源气枪信号的时延检测中。通过模拟研究和实际资料处理对比,结果表明:二次相关方法具有较好的抗干扰性,二次相关后的时延检测结果比直接时延检测结果更加稳定。
Because of the further distance of the observation station,poor detection environment and interference in data processing,the signal to noise ratio of some stations' Green functions of the air-gun source receiving network are lower and the error of detection result of wave ratio is large. We first use the second correlation method for simulation testing,and then apply the method to the time delay detection of the Binchuan air-gun signal. Comparison results between the simulation and processing of air-gun signal shows that the time delay estimation based on the second correlation method has better anti-interference and the calculated results of it are more stable than that of the direct delay detection method.
Because of the further distance of the observation station,poor detection environment and interference in data processing,the signal to noise ratio of some stations' Green functions of the air-gun source receiving network are lower and the error of detection result of wave ratio is large. We first use the second correlation method for simulation testing,and then apply the method to the time delay detection of the Binchuan air-gun signal. Comparison results between the simulation and processing of air-gun signal shows that the time delay estimation based on the second correlation method has better anti-interference and the calculated results of it are more stable than that of the direct delay detection method.
引文
陈佳,叶泵,高琼,等.2017.利用气枪震源信号研究2016年云龙MS5.0地震前后波速变化[J].地震研究,40(4):550-526.
陈蒙.2014.利用水库大容量非调制气枪阵列进行区域尺度地下结构探测和监测[D].北京:中国地震局地球物理研究所.
陈颙,黄庭芳,刘恩儒.2009.岩石物理学[M].合肥:中国科学技术大学出版社.
陈颙,张先康,丘学林,等.2007.陆地人工激发地震波的一种新方法[J].科学通报,52(11):1317-1321.
窦慧晶,王千龙,张雪.2016.基于二次相关的广义互相关时差估计算法[J].北京工业大学学报,42(2):197-202.
杜娟,程擂.2010.基于二次相关的时延估计方法研究[J].弹箭与制导学报,30(6):221-223.
刘志坤.2010.利用背景噪声研究汶川地震震源区及周边地壳介质地震波速度变化[D].北京:中国地震局地震预测研究所.
刘自凤,苏有锦,王宝善,等.2015.宾川主动源地震波走时变化分析方法研究[J].地震研究,38(4):591-597.
罗桂纯,葛洪魁,王宝善,等.2008.利用相关检测进行地震波速变化精确测量研究进展[J].地球物理学进展,23(1):56-62.
唐娟,行鸿彦.2007.基于二次相关的时延估计方法[J].计算机工程,33(21):265-267.
王宝善,杨微,王伟涛,等.2012.利用反褶积消除激发环境对水库大容量气枪信号的影响[C]//中国地球物理学会.中国地球物理.北京:中国科学技术出版社.
王彬,李孝宾,刘自凤,等.2016.宾川地震信号发射台的震源系统、观测系统和观测结果[J].中国地震,32(2):193-201.
王彬,吴国华,苏有锦,等.2015.宾川地震信号发射台的选址、建设及初步观测结果[J].地震研究,38(1):1-6.
王彬.2009.利用多种震源测量介质波速变化的实验研究[D].合肥:中国科学技术大学.
王伟涛,倪四道,王宝善.2011.地球背景噪声干涉应用研究的新进展[J].中国地震,27(1):1-13.
王伟涛.2009.基于人工震源的区域尺度介质波速探测研究[D].合肥:中国科学技术大学.
向涯,王彬,杨润海,等.2017.气枪主动源与天然地震信号的传播特征对比研究[J].地震研究,40(4):605-612.
杨润海,王彬,庞卫东,等.2014.云南地区中小震分布的活动构造意义[J].地震研究,37(4):603-606.
杨润海,王彬,郑定昌,等.2011.云南地区波速变化与强震孕育[J].地震研究,34(4):420-427.
杨微.2013.区域尺度主动源探测技术及试验研究[D].北京:中国地震局地球物理研究所.
翟秋实,姚华建,王宝善.2016.气枪震源资料反褶积方法及处理流程研究[J].中国地震,32(2):295-304.
赵盼盼,陈九辉,Michel Campillo,等.2012.汶川地震区地壳速度相对变化的环境噪声自相关研究[J].地球物理学报,55(1):137-145.
周康辉,董万胜,刘恒毅,等.2013.利用二次相关改进的广义互相关时延估计算法[J].数据采集与处理,28(6):801-806.
Aki K.1957.Space and time spectra of stationary stochastic waves with special reference to microtremors[J].Bull Earthquake Res Inst,35:415-456.
Carter G C.1987.Coherence and delay time estimation[J].Proc IEEE,75(2):236-255.
Chen Y,Liu L,Ge H,et al.2008.Using an airgun array in a land reservoir as the seismic source for seismotectonic studies in northern China:experiments and preliminary results[J].Geophysical Prospecting,56(4):601-612.
Chen Y,Wang B S,Yao H J.2017.Seismic airgun exploration of continental crust structures[J].Science China Earth Sciences,60(10):1739-1751.
Friedrich A,Krüger F,Klinge K.1998.Ocean-generated microseismic noise located with the Gr?fenberg array[J].Journal of Seismology,2(1):47-64.
Hasselmann.1963.A statistical analysis of the generation of microseisms[J].Reviews of Geophysics,1(2):177-210.
Longuet-Higgins M S.1950.A Theory of the Origin of Microseisms[J].Phil trans roy soc ser,243(857):1-35.
Meier U,Shapiro N M,Breguier F.2010.Detecting seasonal variations in seismic velocities within Los Angeles basin from correlations of ambient seismic noise[J].Geophysical Journal International,181(2):985-996.
Schaff D P,Beroza G C.2004.Coseismic and postseismic velocity changes measured by repeating earthquakes[J].Journal of Geophysical Research Solid Earth,109(B10):67-85.
Shapiro N M,Campillo M.2004.Emergence of broadband Rayleigh waves from correlations of the ambient seismic noise[J].Geophys Res Lett,31(31):07614.
Wang B S,Ge H K,Wang B,et al.2016.Practices and Advances in Exploring the Subsurface Structure and Its Temporal Evolution with Repeatable Artificial Sources[J].Earthquake Research in China,30(3):284-297.
Wang B S,Zhu P,Chen Y,et al.2008.Continuous subsurface velocity measurement with coda wave interferometry[J].Journal of Geophysical Research,113(B12):36-44.
陈蒙.2014.利用水库大容量非调制气枪阵列进行区域尺度地下结构探测和监测[D].北京:中国地震局地球物理研究所.
陈颙,黄庭芳,刘恩儒.2009.岩石物理学[M].合肥:中国科学技术大学出版社.
陈颙,张先康,丘学林,等.2007.陆地人工激发地震波的一种新方法[J].科学通报,52(11):1317-1321.
窦慧晶,王千龙,张雪.2016.基于二次相关的广义互相关时差估计算法[J].北京工业大学学报,42(2):197-202.
杜娟,程擂.2010.基于二次相关的时延估计方法研究[J].弹箭与制导学报,30(6):221-223.
刘志坤.2010.利用背景噪声研究汶川地震震源区及周边地壳介质地震波速度变化[D].北京:中国地震局地震预测研究所.
刘自凤,苏有锦,王宝善,等.2015.宾川主动源地震波走时变化分析方法研究[J].地震研究,38(4):591-597.
罗桂纯,葛洪魁,王宝善,等.2008.利用相关检测进行地震波速变化精确测量研究进展[J].地球物理学进展,23(1):56-62.
唐娟,行鸿彦.2007.基于二次相关的时延估计方法[J].计算机工程,33(21):265-267.
王宝善,杨微,王伟涛,等.2012.利用反褶积消除激发环境对水库大容量气枪信号的影响[C]//中国地球物理学会.中国地球物理.北京:中国科学技术出版社.
王彬,李孝宾,刘自凤,等.2016.宾川地震信号发射台的震源系统、观测系统和观测结果[J].中国地震,32(2):193-201.
王彬,吴国华,苏有锦,等.2015.宾川地震信号发射台的选址、建设及初步观测结果[J].地震研究,38(1):1-6.
王彬.2009.利用多种震源测量介质波速变化的实验研究[D].合肥:中国科学技术大学.
王伟涛,倪四道,王宝善.2011.地球背景噪声干涉应用研究的新进展[J].中国地震,27(1):1-13.
王伟涛.2009.基于人工震源的区域尺度介质波速探测研究[D].合肥:中国科学技术大学.
向涯,王彬,杨润海,等.2017.气枪主动源与天然地震信号的传播特征对比研究[J].地震研究,40(4):605-612.
杨润海,王彬,庞卫东,等.2014.云南地区中小震分布的活动构造意义[J].地震研究,37(4):603-606.
杨润海,王彬,郑定昌,等.2011.云南地区波速变化与强震孕育[J].地震研究,34(4):420-427.
杨微.2013.区域尺度主动源探测技术及试验研究[D].北京:中国地震局地球物理研究所.
翟秋实,姚华建,王宝善.2016.气枪震源资料反褶积方法及处理流程研究[J].中国地震,32(2):295-304.
赵盼盼,陈九辉,Michel Campillo,等.2012.汶川地震区地壳速度相对变化的环境噪声自相关研究[J].地球物理学报,55(1):137-145.
周康辉,董万胜,刘恒毅,等.2013.利用二次相关改进的广义互相关时延估计算法[J].数据采集与处理,28(6):801-806.
Aki K.1957.Space and time spectra of stationary stochastic waves with special reference to microtremors[J].Bull Earthquake Res Inst,35:415-456.
Carter G C.1987.Coherence and delay time estimation[J].Proc IEEE,75(2):236-255.
Chen Y,Liu L,Ge H,et al.2008.Using an airgun array in a land reservoir as the seismic source for seismotectonic studies in northern China:experiments and preliminary results[J].Geophysical Prospecting,56(4):601-612.
Chen Y,Wang B S,Yao H J.2017.Seismic airgun exploration of continental crust structures[J].Science China Earth Sciences,60(10):1739-1751.
Friedrich A,Krüger F,Klinge K.1998.Ocean-generated microseismic noise located with the Gr?fenberg array[J].Journal of Seismology,2(1):47-64.
Hasselmann.1963.A statistical analysis of the generation of microseisms[J].Reviews of Geophysics,1(2):177-210.
Longuet-Higgins M S.1950.A Theory of the Origin of Microseisms[J].Phil trans roy soc ser,243(857):1-35.
Meier U,Shapiro N M,Breguier F.2010.Detecting seasonal variations in seismic velocities within Los Angeles basin from correlations of ambient seismic noise[J].Geophysical Journal International,181(2):985-996.
Schaff D P,Beroza G C.2004.Coseismic and postseismic velocity changes measured by repeating earthquakes[J].Journal of Geophysical Research Solid Earth,109(B10):67-85.
Shapiro N M,Campillo M.2004.Emergence of broadband Rayleigh waves from correlations of the ambient seismic noise[J].Geophys Res Lett,31(31):07614.
Wang B S,Ge H K,Wang B,et al.2016.Practices and Advances in Exploring the Subsurface Structure and Its Temporal Evolution with Repeatable Artificial Sources[J].Earthquake Research in China,30(3):284-297.
Wang B S,Zhu P,Chen Y,et al.2008.Continuous subsurface velocity measurement with coda wave interferometry[J].Journal of Geophysical Research,113(B12):36-44.