| 均匀介质中F-K反偏移法正演模拟 |
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| 引用本文： | 张东良,孙建国,韩复兴.均匀介质中F-K反偏移法正演模拟[J].吉林大学学报(地球科学版),2007(Z1). |
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| 作者姓名： | 张东良 孙建国 韩复兴 |
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| 作者单位： | [1]吉林大学地球探测科学与技术学院 [2]吉林大学地球探测科学与技术学院 长春 [3]国土资源部应用地球物理综合解释理论开放实验室 |
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| 基金项目： | 国家自然科学基金项目(40574052) |
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| 摘 要： | F-K反偏移法正演模拟是在给定地质模型后通过构建人工偏移场,再对人工偏移场进行F-K反偏移来实现。人工偏移场的构建是在地质模型上直接放上经正确拉伸和幅度校正后的地震脉冲子波。F-K反偏移中插值映射采用两点sinc插值,其能避免假同相轴的出现且具有较快的速度。奇异点处理使用泰勒近似展开。最后对凹陷模型进行了F-K反偏移法正演模拟实现,得到了预期的效果。
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| 关 键 词： | 正演模拟 反偏移 频率-波数域 |
Modeling by F-K Demigration in Homogeneous Media |
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| ZHANG Dong-liang,SUN Jian-guo,HAN Fu-xing, .College of GeoExploration Science and Technology,Jilin University,Changchun ,China .Laboratory for Integrated Geophysical Interpretation Theory of Ministry for Land and Resources,Changchun ,China.Modeling by F-K Demigration in Homogeneous Media[J].Journal of Jilin Unviersity:Earth Science Edition,2007(Z1). |
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| Authors: | ZHANG Dong-liang SUN Jian-guo HAN Fu-xing College of GeoExploration Science and Technology Jilin University Changchun China Laboratory for Integrated Geophysical Interpretation Theory of Ministry for Land and Resources Changchun China |
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| Institution: | ZHANG Dong-liang1,2,SUN Jian-guo1,2,HAN Fu-xing1,2 1.College of GeoExploration Science and Technology,Jilin University,Changchun 130026,China 2.Laboratory for Integrated Geophysical Interpretation Theory of Ministry for Land and Resources,Changchun 130026,China |
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| Abstract: | The seismic forward modeling by F-K demigration is a new technique of seismic modeling which construct synthetic migrated section through giving a geological model,then demigrate the synthetic migrated section by F-K demigration method.The consduction of synthetic migrated section is putting the seismic impulse wavelet which distort correctly and the amplitude is proofreaded.The interpolation in the F-K demigration adopt two dot sinc interpolation,it can avoid feigned seismic events with faster velocity.The solving method of the singularity is based on Taylor approximation.Finally sunken model is processed by F-K demigration and gains expect effect. |
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| Keywords: | modeling demigrate frequency-wavenumber domain |
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