基于ITD算法的微震信号到时精确拾取
摘要
基于固有时间尺度分解(ITD)及其精确提取的瞬时振幅和瞬时频率信息,对信号时频去噪的基础上,应用长短时均值比例函数(STA/LTA)和瞬时频率信息,构建了一种精确拾取初至震相到时的方法。对监测的微地震信号初至波到时拾取应用表明,提出方法较采用最优基小波包去噪信号经小波变换分解的单尺度信号拾取到时有效拾取率和可靠性高。
引文
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[8]H Zhang,C Thurber,C Rowe.Automatic P-Wave Arrival Detec-tion and Picking with Multiscale Wavelet Analysis for Single-Com-ponent Recordings[J].Bulletin of the Seismological Society of A-merica,2003,93(5):1904-1912.
[9]J J Galiana-Merino,J Rosa-Herranz,J Giner,et al.De-noising of short-period seismograms by wavelet packet transform[J].Bulle-tin of the Seismological Society of America,2003(93):2334-2562.
[10]C Bai,B L Kennett.Automatic Phase-Detection and Identifica-tion by Full Use of a Single Three-Component Broadband Seismo-gram[J].Bulletin of the Seismological Society of America,2000,90(1):187-198.
[11]H Dai,C MacBeth.Automatic picking of seismic arrivals in local earthquake data using artificial neural network[J].Geophys J Int,1995(120):758-774.
[12]M G Frei,I Osorio.Intrinsic time-scale decomposition:time-fre-quency-energy analysis and real-time filtering of non-stationary sig-nals[J].Proceedings of the Royal Society of London A,2006,463(2078):321-342.
[13]张瑞红,齐宏伟,林大超,等.基于固有时间尺度分解算法的微震信号去噪[J].煤矿安全,2012,43(3):164-167,168.
[2]R E Allen.Automatic phase pickers:Their present use and future prospects[J].Bulletin of the Seismological Society of America,1982,72(6B):225-242.
[3]T McEvilly,E Majer.ASP:A Automated Seismic Processor For Microearthquake Networks[J].Bulletin of the Seismological Soci-ety of America,1982,72(1):303-325.
[4]M Baer,U Kradolfer.An automatic phase picker for local and teleseismic events[J].Bulletin of the Seismological Society of A-merica,1987,77(4):1437-1445.
[5]P S Earle,P M Shearer.Characterization of global seismograms u-sing an automatic-picking algorithm[J].Bulletin of the Seismo-logical Society of America,1994,84(2):366-376.
[6]马强.地震预警技术研究及应用[D].哈尔滨:中国地震局工程力学研究所,2008.
[7]叶根喜,姜福兴,杨淑华.时窗能量特征法拾取微地震波初始到时的可行性研究[J].地球物理学报,2008,51(5):1575-1581.
[8]H Zhang,C Thurber,C Rowe.Automatic P-Wave Arrival Detec-tion and Picking with Multiscale Wavelet Analysis for Single-Com-ponent Recordings[J].Bulletin of the Seismological Society of A-merica,2003,93(5):1904-1912.
[9]J J Galiana-Merino,J Rosa-Herranz,J Giner,et al.De-noising of short-period seismograms by wavelet packet transform[J].Bulle-tin of the Seismological Society of America,2003(93):2334-2562.
[10]C Bai,B L Kennett.Automatic Phase-Detection and Identifica-tion by Full Use of a Single Three-Component Broadband Seismo-gram[J].Bulletin of the Seismological Society of America,2000,90(1):187-198.
[11]H Dai,C MacBeth.Automatic picking of seismic arrivals in local earthquake data using artificial neural network[J].Geophys J Int,1995(120):758-774.
[12]M G Frei,I Osorio.Intrinsic time-scale decomposition:time-fre-quency-energy analysis and real-time filtering of non-stationary sig-nals[J].Proceedings of the Royal Society of London A,2006,463(2078):321-342.
[13]张瑞红,齐宏伟,林大超,等.基于固有时间尺度分解算法的微震信号去噪[J].煤矿安全,2012,43(3):164-167,168.
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