高铁地震震源子波时间函数及验证
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摘要
基于纵横波产生机理并结合高铁列车及铁轨结构,本文给出了高铁列车产生地震纵波及横波震源(点源及等效源)子波的时间函数;通过实际高铁地震数据及合成高铁地震数据分析,验证了高铁地震震源子波时间函数的合理性;在高铁列车匀速、加速及减速运行情况下,利用高铁地震点源子波合成记录分析了高铁地震震源子波的频谱特征,为实际高铁地震数据处理解释奠定了良好的基础.
Based on the generation mechanism of P-and S-waves and structures of high-speedtrains and high-speed-railway,this paper presents a high-speed-train seismic wavelet time function of Pand S-wave sources(point source and equivalent source)by a high-speed-train.Spectrum analysis of actual and synthetic data verifies this function is reasonable.Using synthetic records of wavelets by a point source,this paper analyzes the features of spectra of these wavelets in the cases of uniform speed,acceleration and deceleration,providing a basis for processing and interpretation of real data.
Based on the generation mechanism of P-and S-waves and structures of high-speedtrains and high-speed-railway,this paper presents a high-speed-train seismic wavelet time function of Pand S-wave sources(point source and equivalent source)by a high-speed-train.Spectrum analysis of actual and synthetic data verifies this function is reasonable.Using synthetic records of wavelets by a point source,this paper analyzes the features of spectra of these wavelets in the cases of uniform speed,acceleration and deceleration,providing a basis for processing and interpretation of real data.
引文
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Chen Z B,Chen X H,Li J Y,et al.2014.A band-limited and robust inverse Qfiltering algorithm.Oil Geophysical Prospecting(in Chinese),49(1):68-75.
Daubechies I,Maes S.1996.A nonlinear squeezing of the continuous wavelet transform based on auditory nerve models.∥Aldroubi A,Unser M eds.Wavelets in Medicine and Biology.Boca Raton,FL:CRC Press,527-546.
Daubechies I,Lu J F,Wu H T.2011.Synchrosqueezed wavelet transforms:an empirical mode decomposition-like tool.Applied and Computational Harmonic Analysis,30(2):243-261.
Futterman W I.1962.Dispersive body waves.Journal of Geophysical Research,69(13):5279-5291.
Hargreaves N D,Calvert A J.1991.Inverse Qfiltering by Fourier transform.Geophysics,56(4):519-527.
Herrera R H,Han J J,Van Der Baan M.2014.Applications of the synchrosqueezing transform in seismic time-frequency analysis.Geophyscis,79(3):V55-V64.
Huang Z L,Zhang J Z,Zhao T H,et al.2016.Synchrosqueezing S-Transform and its application in seismic spectral decomposition.IEEE Transactions on Geoscience and Remote Sensing,54(2):817-825.
Huang Z L,Zhang J Z,Zou Z H.et al.2017.A second-order synchrosqueezing S-transform and its application in seismic spectral decomposition.Chinese Journal of Geophysics(in Chinese),60(7):2833-2844,doi:10.6038/cjg20170728.
Kjartansson E.1979.Constant Q-wave propagation and attenuation.Journal of Geophysical Research:SolidEarth,84(B9):4737-4748.
Wang Y H.2002.A stable and efficient approach of inverse Qfiltering.Geophysics,67(2):657-663.
Wang Y H,Guo J.2004.Modified Kolsky model for seismic attenuation and dispersion.Journal of Geophysics and Engineering,1(3):187-196.
Wang Y H.2006.Inverse Q-filter for seismic resolution enhancement.Geophysics,71(3):V51-V60.
Yao Z X,Gao X,Li W X.2003.The forward Q method for compensating attenuation and frequency dispersion used in the seismic profile of depth domain.Chinese Journal of Geophysics(in Chinese),46(2):229-230.
Zhang G L,He Z H,Wang X M,et al.2014.Seismic wave dispersion effects and inverse Q-filter phase compensation.Chinese Journal of Geophysics(in Chinese),57(5):1655-1663,doi:10.6038/cjg20140528.
Zhang G L,Wang X M,He Z H.2015.A stable and self-adaptive approach for inverse Q-filter.Journal of Applied Geophysics,116:236-246.
Zhang G L,Wang X M,He Z H.2017.An efficient and self-adaptive approach for Qvalue optimization.Geophysical Prospecting,65(1):280-291.
Zhang G L.2018.Time-phase amplitude spectra based on a modified short-time Fourier transform.GeophysicalProspecting,68(1):34-46.
陈增保,陈小宏,李景叶等.2014.一种带限稳定的反Q滤波算法.石油地球物理勘探,49(1):68-75.
黄忠来,张建中,邹志辉等.2014.二阶同步挤压S变换及其在地震谱分解中的应用.地球物理学报,60(7):2833-2844,doi:10.6038/cjg20170728.
姚振兴,高星,李维新.2003.用于深度域地震剖面衰减与频散补偿的反Q滤波方法.地球物理学报,46(2):229-230.
张固澜,贺振华,王熙明等.2014.地震波频散效应与反Q滤波相位补偿.地球物理学报,57(5):1655-1663,doi:10.6038/cjg20140528.
Chen Z B,Chen X H,Li J Y,et al.2014.A band-limited and robust inverse Qfiltering algorithm.Oil Geophysical Prospecting(in Chinese),49(1):68-75.
Daubechies I,Maes S.1996.A nonlinear squeezing of the continuous wavelet transform based on auditory nerve models.∥Aldroubi A,Unser M eds.Wavelets in Medicine and Biology.Boca Raton,FL:CRC Press,527-546.
Daubechies I,Lu J F,Wu H T.2011.Synchrosqueezed wavelet transforms:an empirical mode decomposition-like tool.Applied and Computational Harmonic Analysis,30(2):243-261.
Futterman W I.1962.Dispersive body waves.Journal of Geophysical Research,69(13):5279-5291.
Hargreaves N D,Calvert A J.1991.Inverse Qfiltering by Fourier transform.Geophysics,56(4):519-527.
Herrera R H,Han J J,Van Der Baan M.2014.Applications of the synchrosqueezing transform in seismic time-frequency analysis.Geophyscis,79(3):V55-V64.
Huang Z L,Zhang J Z,Zhao T H,et al.2016.Synchrosqueezing S-Transform and its application in seismic spectral decomposition.IEEE Transactions on Geoscience and Remote Sensing,54(2):817-825.
Huang Z L,Zhang J Z,Zou Z H.et al.2017.A second-order synchrosqueezing S-transform and its application in seismic spectral decomposition.Chinese Journal of Geophysics(in Chinese),60(7):2833-2844,doi:10.6038/cjg20170728.
Kjartansson E.1979.Constant Q-wave propagation and attenuation.Journal of Geophysical Research:SolidEarth,84(B9):4737-4748.
Wang Y H.2002.A stable and efficient approach of inverse Qfiltering.Geophysics,67(2):657-663.
Wang Y H,Guo J.2004.Modified Kolsky model for seismic attenuation and dispersion.Journal of Geophysics and Engineering,1(3):187-196.
Wang Y H.2006.Inverse Q-filter for seismic resolution enhancement.Geophysics,71(3):V51-V60.
Yao Z X,Gao X,Li W X.2003.The forward Q method for compensating attenuation and frequency dispersion used in the seismic profile of depth domain.Chinese Journal of Geophysics(in Chinese),46(2):229-230.
Zhang G L,He Z H,Wang X M,et al.2014.Seismic wave dispersion effects and inverse Q-filter phase compensation.Chinese Journal of Geophysics(in Chinese),57(5):1655-1663,doi:10.6038/cjg20140528.
Zhang G L,Wang X M,He Z H.2015.A stable and self-adaptive approach for inverse Q-filter.Journal of Applied Geophysics,116:236-246.
Zhang G L,Wang X M,He Z H.2017.An efficient and self-adaptive approach for Qvalue optimization.Geophysical Prospecting,65(1):280-291.
Zhang G L.2018.Time-phase amplitude spectra based on a modified short-time Fourier transform.GeophysicalProspecting,68(1):34-46.
陈增保,陈小宏,李景叶等.2014.一种带限稳定的反Q滤波算法.石油地球物理勘探,49(1):68-75.
黄忠来,张建中,邹志辉等.2014.二阶同步挤压S变换及其在地震谱分解中的应用.地球物理学报,60(7):2833-2844,doi:10.6038/cjg20170728.
姚振兴,高星,李维新.2003.用于深度域地震剖面衰减与频散补偿的反Q滤波方法.地球物理学报,46(2):229-230.
张固澜,贺振华,王熙明等.2014.地震波频散效应与反Q滤波相位补偿.地球物理学报,57(5):1655-1663,doi:10.6038/cjg20140528.