Pearson相关系数法快慢横波波场分离
|
摘要
横波分裂是各向异性介质的重要特征,当横波或转换波穿过各向异性介质到达地面时,地面三分量检波器的x分量和y分量接收到的地震记录中都会同时存在快横波和慢横波。将快横波和慢横波进行分离,进而计算介质的各向异性参数是多分量数据处理中重要的一步。将数学中的Pearson相关系数引入到多分量地震勘探中,提出了Pearson相关系数法进行旋转角度识别,进而分离快、慢横波波场。相比于传统的互相关法,Pearson相关系数法从精度、抗噪性能和计算效率上都有提高。
Shear-wave splitting is an important characteristic of anisotropic media.Generally,when S or P-SV waves reach to the ground through anisotropic media,the seismic record received by x component and y component of three-component detector contains fast wave and slow wave simultaneously.Separating fast wave and slow wave and then calculating the anisotropic parameters of media are an important step in multi-component data processing.The authors introduce the Pearson correlation coefficients into multi-component seismic exploration and propose the Pearson correlation coefficients to detect the rotation angle and then separate the fast wave and slow wave.Compared with the traditional cross-correlation method,the Pearson correlation coefficient method is better in accuracy,noise immunity and computational efficiency.
Shear-wave splitting is an important characteristic of anisotropic media.Generally,when S or P-SV waves reach to the ground through anisotropic media,the seismic record received by x component and y component of three-component detector contains fast wave and slow wave simultaneously.Separating fast wave and slow wave and then calculating the anisotropic parameters of media are an important step in multi-component data processing.The authors introduce the Pearson correlation coefficients into multi-component seismic exploration and propose the Pearson correlation coefficients to detect the rotation angle and then separate the fast wave and slow wave.Compared with the traditional cross-correlation method,the Pearson correlation coefficient method is better in accuracy,noise immunity and computational efficiency.
引文
[1]钟伟,杨宝俊,张智.复杂介质地震波场研究进展[J].世界地质,2005,24(4):403-407.ZHONG Wei,YANG Bao-jun,ZHANG Zhi.Advance in research on seismic wavefield of complex medium[J].Global Geology,2005,24(4):403-407.
[2]Crampin S.Evaluation of anisotropy by shear-wave split-ting[J].Geophysics,1985,50(1):142-152.
[3]何樵登,张中杰.对各向异性介质中横波分裂现象的研究[J].世界地质,1990,9(2):11-18.HE Qiao-deng,ZHANG Zhong-jie.Study of shear-wave splitting in anisotropy medium[J].Global Geology,1990,9(2):11-18.
[4]唐建侯,贺振华,黄德济.角度谱在快慢横波分离中的应用[J].物探化探计算技术,2003,25(1):18-21.TANG Jian-hou,HE Zhen-hua,HUANG De-ji.Applica-tion of angular spectra in separating fast and slow shear-wave[J].Geophysical and Geochemical Exploration,2003,25(1):18-21.
[5]王培茂,杨冬红,高茹,等.基于匹配小波包算法的地震信号去噪[J].世界地质,2011,30(2):277-281.WANG Pei-mao,YANG Dong-hong,GAO Ru,et al.Seismic signal denoising by matching wavelet packet algo-rithm[J].Global Geology,2011,30(2):277-281.
[6]冯太林.用双分量记录反演裂隙方位的旋转变换方法[J].石油物探.1995,34(4):27-32.FENG Tai-lin.Rotation transform for inversion of the azi-muth of fractures with bicomponents record[J].GPP,1995,34(4):27-32.
[7]黄中玉,赵金洲.正交基旋转的横波分裂检测技术[J].石油地球物理勘探,2004,39(2):149-152.HUANG Zhong-yu,ZHAO Jin-zhou.Technique of S-wave splitting detection by orthonormal basis rotation[J].Oil Geophysical Prospecting,2004,39(2):149-152.
[8]Gabriela D,Richard B.Minimum entropy rotation:a new shear-wave splitting technique for converted wave data[S].SEG Expanded Abstracts,2000:1229-1232.
[9]黎书琴,李忠,张白林.运用最小熵旋转预测裂缝[J].西部探矿工程,2010(4):66-69.LI Shu-qin,LI Zhong,ZHANG Bai-lin.Use the mini-mum entropy rotation to detect fracture[J].West-China Exploration Engineering,2010(4):66-69.
[10]Crampin S,Peacock S.A review of shear-wave splitting in the compliant crack-critical anisotropic Earth[J].Wave Motion,2005,41:59-77.
[11]Alford R M.Shear data in the presence of azimuthal ani-sotropy:Dilley,Texas:SEG technical program expand-ed abstracts[C].Houston:SEG,1986:476-479.
[12]张宇镭,党琰,贺平安.利用Pearson相关系数定量分析生物亲缘关系[J].计算机工程与应用,2005,33:79-82.ZHANG Yu-lei,DANG Yan,HE Ping-an.Quantitative analysis of the relationship of biology species using pear-son correlation coefficient[J].Computer Engineering and Applications,2005,33:79-82.
[13]王凯,冯晅,郭智奇,等.可控力源激发EDA介质中横波分裂现象正演模拟研究[J].吉林大学学报:地球科学版,2010,40(增刊1):21-26.WANG Kai,FENG Xuan,GUO Zhi-qi,et al.Simula-tion research of the phenomenon of the shear-wave split-ting in EDA media with the controlled source[J].Jour-nal of Jilin University:Earth Science Edition,2010,40(Suppl.1):21-26.
[2]Crampin S.Evaluation of anisotropy by shear-wave split-ting[J].Geophysics,1985,50(1):142-152.
[3]何樵登,张中杰.对各向异性介质中横波分裂现象的研究[J].世界地质,1990,9(2):11-18.HE Qiao-deng,ZHANG Zhong-jie.Study of shear-wave splitting in anisotropy medium[J].Global Geology,1990,9(2):11-18.
[4]唐建侯,贺振华,黄德济.角度谱在快慢横波分离中的应用[J].物探化探计算技术,2003,25(1):18-21.TANG Jian-hou,HE Zhen-hua,HUANG De-ji.Applica-tion of angular spectra in separating fast and slow shear-wave[J].Geophysical and Geochemical Exploration,2003,25(1):18-21.
[5]王培茂,杨冬红,高茹,等.基于匹配小波包算法的地震信号去噪[J].世界地质,2011,30(2):277-281.WANG Pei-mao,YANG Dong-hong,GAO Ru,et al.Seismic signal denoising by matching wavelet packet algo-rithm[J].Global Geology,2011,30(2):277-281.
[6]冯太林.用双分量记录反演裂隙方位的旋转变换方法[J].石油物探.1995,34(4):27-32.FENG Tai-lin.Rotation transform for inversion of the azi-muth of fractures with bicomponents record[J].GPP,1995,34(4):27-32.
[7]黄中玉,赵金洲.正交基旋转的横波分裂检测技术[J].石油地球物理勘探,2004,39(2):149-152.HUANG Zhong-yu,ZHAO Jin-zhou.Technique of S-wave splitting detection by orthonormal basis rotation[J].Oil Geophysical Prospecting,2004,39(2):149-152.
[8]Gabriela D,Richard B.Minimum entropy rotation:a new shear-wave splitting technique for converted wave data[S].SEG Expanded Abstracts,2000:1229-1232.
[9]黎书琴,李忠,张白林.运用最小熵旋转预测裂缝[J].西部探矿工程,2010(4):66-69.LI Shu-qin,LI Zhong,ZHANG Bai-lin.Use the mini-mum entropy rotation to detect fracture[J].West-China Exploration Engineering,2010(4):66-69.
[10]Crampin S,Peacock S.A review of shear-wave splitting in the compliant crack-critical anisotropic Earth[J].Wave Motion,2005,41:59-77.
[11]Alford R M.Shear data in the presence of azimuthal ani-sotropy:Dilley,Texas:SEG technical program expand-ed abstracts[C].Houston:SEG,1986:476-479.
[12]张宇镭,党琰,贺平安.利用Pearson相关系数定量分析生物亲缘关系[J].计算机工程与应用,2005,33:79-82.ZHANG Yu-lei,DANG Yan,HE Ping-an.Quantitative analysis of the relationship of biology species using pear-son correlation coefficient[J].Computer Engineering and Applications,2005,33:79-82.
[13]王凯,冯晅,郭智奇,等.可控力源激发EDA介质中横波分裂现象正演模拟研究[J].吉林大学学报:地球科学版,2010,40(增刊1):21-26.WANG Kai,FENG Xuan,GUO Zhi-qi,et al.Simula-tion research of the phenomenon of the shear-wave split-ting in EDA media with the controlled source[J].Jour-nal of Jilin University:Earth Science Edition,2010,40(Suppl.1):21-26.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心