| 弱各向异性介质弹性波的准各向同性近似正演模拟 |
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| 引用本文： | 孙银行.弱各向异性介质弹性波的准各向同性近似正演模拟[J].地球物理学进展,2008,23(4):1118-1123. |
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| 作者姓名： | 孙银行 |
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| 作者单位： | 中国石化胜利油田分公司滨南采油厂,滨州,256601 |
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| 摘 要： | 准各向同性(QI)近似可用于弱各向异性介质的正演模拟.本文通过运用QI方法的零阶和一阶近似,计算了VTI介质模型的地震记录.得出的地震记录与标准各向同性射线理论(IRT)和基于伪谱法的三维地震正演模拟得出的地震记录作了比较,可以认为是精确的合成地震记录.
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| 关 键 词： | 准各向同性 弱各向异性 正演模拟 |
| 收稿时间： | 2008-1-10 |
| 修稿时间： | 2008-3-20 |
Elastic wave forward modeling with quasi-isotropic approximation in weakly anisotropic medium |
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| SUN Yin-hang.Elastic wave forward modeling with quasi-isotropic approximation in weakly anisotropic medium[J].Progress in Geophysics,2008,23(4):1118-1123. |
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| Authors: | SUN Yin-hang |
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| Institution: | (BinnanOilProductionPlantofSinopecShengliOilfieldBranchCompany,Binzhou256601,China) |
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| Abstract: | The quasi-isotropic (QI) approximation allows to perform modeling in weakly anisotropic medium. Seismograms for VTI medium are calculated using the zeroth- and first-order QI approximation. These seismograms are compared with seismograms computed by the standard isotropic ray theory (IRT) and by a 3D seismic forward modeling algorithm which is based on a pseudo-spectral method. The seismograms obtained by the quasi-isotropic (QI) approximation are considered as exact seismograms. |
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| Keywords: | quasi-isotropic weakly anisotropic forward modeling |
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