层状弹性介质三参数同时反演
|
摘要
本文提出一种利用纵波激发、纵波和横波同时接收的两个或多个入射角平面波地震记录同时反演层状介质密度、纵波速度和横波速度的有限带宽反演方法。该方法基于弹性波方程，因此能处理各种转换波和多次波。对有限带宽记录及合有噪声的数据试算表明；这一基于层剥离和优化思想的准特征带方法运算速度快、稳定性较好，并具有一定的抗噪能力。
We describe the bandwidth-limited inversion method for simultaneously deriv-ing the density,P and S wave velocities in layered medium from two or multiangu-lar-incident plane wave data which were generated in P-wave shot condition butrecorded in the way of n11xed P and S-waves. Various converted waves and multiplewaves can also be processed because the method is based on elastic wave equation.The trial processings of bandwidth-limited and noisy seismic data show that thequasi-characteristic zone method which is based on layer stripping and optimizationresults in fast operation,good stability and certain noise resistance.
We describe the bandwidth-limited inversion method for simultaneously deriv-ing the density,P and S wave velocities in layered medium from two or multiangu-lar-incident plane wave data which were generated in P-wave shot condition butrecorded in the way of n11xed P and S-waves. Various converted waves and multiplewaves can also be processed because the method is based on elastic wave equation.The trial processings of bandwidth-limited and noisy seismic data show that thequasi-characteristic zone method which is based on layer stripping and optimizationresults in fast operation,good stability and certain noise resistance.
引文
1马在田.地震参数连续估计与波动方程反问题.地球物理学报,1986,29(1):91～101
2张关泉.一维波动方程的反问题.中国科学(A辑),1988,18(7):707～721
3奕文贵,李幼铭.我国地球物理反问题研究的某些进展.地球物理学报,1990,33(专辑Ⅱ):501～508
4李幼铭.从矢量波动方程出发反演层状地球结构的方法.地球物理学报,1990,33(专辑Ⅱ):19～29
5 Korrnendi F and Dietrich M. Nonlinear waveform inversion of plane-wave seismogram in stratified elasticmedia. Geophysics, 1991, 56 (5): 664~ 674
6 Yagle A E and Levy B C. A layer-stripping solution of the inverse problem for a one-dimensional e1asticmedium. Geophysics, 1985, 50 (3 ): 425 ~ 433
7 Carazzone J J. Inversion of P-SV seismic data. GeoPhysics, l986, 51 (5): 1056~1068
8 Aki K and Richards P G. Quantitative Seismology,Theory and Methods,W H Freeman & Co, 1980
9 Shuey R T. A simplification of the Zoeppritz equations. Geophysics, 1985, 50 (4): 609~ 614
10 Mallick S. A simple approximation to the P-wave reflection coefficient and its implication in the inversionof amplitude variation with offset data. Geophysics, 1993, 58 (4): 544~ 552
2张关泉.一维波动方程的反问题.中国科学(A辑),1988,18(7):707～721
3奕文贵,李幼铭.我国地球物理反问题研究的某些进展.地球物理学报,1990,33(专辑Ⅱ):501～508
4李幼铭.从矢量波动方程出发反演层状地球结构的方法.地球物理学报,1990,33(专辑Ⅱ):19～29
5 Korrnendi F and Dietrich M. Nonlinear waveform inversion of plane-wave seismogram in stratified elasticmedia. Geophysics, 1991, 56 (5): 664~ 674
6 Yagle A E and Levy B C. A layer-stripping solution of the inverse problem for a one-dimensional e1asticmedium. Geophysics, 1985, 50 (3 ): 425 ~ 433
7 Carazzone J J. Inversion of P-SV seismic data. GeoPhysics, l986, 51 (5): 1056~1068
8 Aki K and Richards P G. Quantitative Seismology,Theory and Methods,W H Freeman & Co, 1980
9 Shuey R T. A simplification of the Zoeppritz equations. Geophysics, 1985, 50 (4): 609~ 614
10 Mallick S. A simple approximation to the P-wave reflection coefficient and its implication in the inversionof amplitude variation with offset data. Geophysics, 1993, 58 (4): 544~ 552
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