| 复杂地表条件反射振幅一致性校正 |
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| 引用本文： | 李生杰,施行觉,郑鸿明,王宝善.复杂地表条件反射振幅一致性校正[J].地球物理学报,2002,45(6):862-869. |
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| 作者姓名： | 李生杰 施行觉 郑鸿明 王宝善 |
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| 作者单位： | 1. 中国科学技术大学地球与空间科学系,合肥,230026;
2. 新疆油田分公司勘探开发研究院地球物理研究所,乌鲁木齐,830011 |
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| 基金项目： | 国家自然科学基金项目 (4 98740 43 ) . |
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| 摘 要： | 通过对地表一致性数学物理模型的前提条件进行剖析,合理地确定了反射振幅一致性校正模型,并依据该模型及其实现条件提出使用共轭梯度方法在时间域对地震记录进行谱分解处理. 通过选择复杂地表条件地区的较为典型的地震记录进行资料处理,结果表明:采用所提出的方法可以有效地校正因复杂地表条件等因素对地震反射振幅而产生的影响. 在复杂地表条件及信噪比较低地区的地震资料处理中,该方法具有处理速度快、抗噪能力强及实际应用效果显著的优点.
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| 关 键 词： | 复杂地表条件 共轭梯度法 谱分解 低信噪比. |
| 文章编号： | 0001-5733(2002)06-0862-08 |
THE CONSISTENT CORRECTION OF SEISMIC AMPLITUDE IN COMPLICATED SURFACE AREA |
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| LI SHENG-JIE,SHI XING-JUE,ZHENG HONG-MING,WANG BAO-SHAN.THE CONSISTENT CORRECTION OF SEISMIC AMPLITUDE IN COMPLICATED SURFACE AREA[J].Chinese Journal of Geophysics,2002,45(6):862-869. |
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| Authors: | LI SHENG-JIE SHI XING-JUE ZHENG HONG-MING WANG BAO-SHAN |
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| Institution: | 1. Department of Earth and Space Science,The University of Science and Technology of China,Hefei 230026,China;
2. Institute of Petroleum Geophysics,Exploration and Development Academy of KOC,rümqi 830011,China |
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| Abstract: | On the basis of the analysis of the hypothesis in surface-consistent model,the conjugate gradient method is applied to decompose the seismic record in time domain in terms of the surface-consistent precondition and model. Application to real and typical seismic data for complex surface conditions shows that the effect of near-surface condition on seismic records can be effectively eliminated by means of the method presented here. For complex surface condition and low signal-to-noise area,this method has advantages such as faster,robust to noise. |
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| Keywords: | Complex surface condition Conjugate gradient algorithm Decomposition Lower signal-to-noise ratio |
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