| 基于构建虚同相轴压制地震层间多次波 |
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| 引用本文： | 吴静,吴志强,胡天跃,何玉华,王璞,闫桂京,李琳.基于构建虚同相轴压制地震层间多次波[J].地球物理学报,2013,56(3):985-994. |
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| 作者姓名： | 吴静 吴志强 胡天跃 何玉华 王璞 闫桂京 李琳 |
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| 作者单位： | 1. 北京大学地球与空间科学学院, 北京 100871;
2. 国土资源部青岛海洋地质研究所, 青岛 266071 |
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| 基金项目： | 国家973计划(2013CB228602);国家729专项(南黄海海域油气资源普查);国家自然科学基金(40974066)资助. |
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| 摘 要： | 基于构建虚同相轴来估计层间多次波的方法是克希霍夫积分表示定理的一个延伸发展.本文通过构建虚地震同相轴巧妙地将散射点从地下移到了表面,利用表面的散射点来预测层间多次波.由于预测与实际地震记录中的层间多次波振幅存在偏差,采用了多道的L1范数匹配算法来实现真振幅的多次波压制.对简单模型和南黄海地质模型的数据处理实例验证了本文研究方法的正确性和有效性.
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| 关 键 词： | 虚同相轴 层间多次波 多道L1范数 多次波压制 |
| 收稿时间： | 2012-03-25 |
Seismic internal multiple attenuation based on constructing virtual events |
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| WU Jing,WU Zhi-Qiang,HU Tian-Yue,HE Yu-Hua,WANG Pu,YAN Gui-Jing,LI Lin.Seismic internal multiple attenuation based on constructing virtual events[J].Chinese Journal of Geophysics,2013,56(3):985-994. |
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| Authors: | WU Jing WU Zhi-Qiang HU Tian-Yue HE Yu-Hua WANG Pu YAN Gui-Jing LI Lin |
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| Institution: | 1. School of Earth and Space Sciences, Peking University, Beijing 100871, China;
2. Qingdao Institute of Marine Geology, Ministry of Land Resources, Qingdao 266071, China |
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| Abstract: | The method of estimating internal multiple based on constructing virtual events is an extended result of Kirchhoff integral representation theorem. In this paper, the downward reflection point is shifted from subsurface to free surface skillfully by constructing virtual events, and then the internal multiple can be predicted simply by using surface scattering points without subsurface information. After estimation of multiple, a multi-channel L1 norm matching method is used to implement true amplitude multiple subtraction. In addition, the examples of seismic data processing results of a simple model and a South Yellow Sea geological model verify the accuracy and effectiveness of the method developed in this paper. |
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| Keywords: | Virtual event Internal multiple Multi-channel L1 norm Multiple attenuation |
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