| 炮集域压制海水鸣震的τ-p变换法 |
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| 引用本文： | 李键,王修田.炮集域压制海水鸣震的τ-p变换法[J].中国海洋大学学报(自然科学版),2008,38(1):121-124,128. |
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| 作者姓名： | 李键 王修田 |
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| 作者单位： | 中国海洋大学,海洋地球科学学院,山东,青岛,266100;中国海洋大学,海底科学与探测技术教育部重点实验室,山东,青岛,266100 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 利用Radon变换压制多次波的传统做法一般都是先进行叠加速度分析,然后在CMP道集上做相应滤波处理.实际资料处理中,带有多次波的速度分析难以准确地提取速度,进而造成多次波压制的效果不够理想.有别于传统的做法,本文提出的方法通过对炮集记录进行同相轴重排,运用变换域自适应切除的τ-p变换(线性Radon变换)滤波,实现了直接在炮集记录中压制海水鸣震.实际资料处理表明,该方法对于海水鸣震多次波压制是一种行之有效的方法.
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| 关 键 词： | 多次波压制 海水鸣震 Radon变换 同相轴重排 |
| 文章编号： | 1672-5174（2008）01-121-05 |
| 收稿时间： | 2007-06-08 |
| 修稿时间： | 2007-11-14 |
Marine Reverberation Attenuation on Shot Gathers Using τ-p Transform |
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| LI Jian,WANG Xiu-Tian.Marine Reverberation Attenuation on Shot Gathers Using τ-p Transform[J].Periodical of Ocean University of China,2008,38(1):121-124,128. |
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| Authors: | LI Jian WANG Xiu-Tian |
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| Abstract: | The conventional multiple attenuation techniques using the Radon transform are usually involved first in stacking velocity estimation of primary or multiple reflections, and then filtering multiple reflections on CMP gathers. However, multiple reflections usually impair with the accuracy of velocity analysis, and as a result, good performance of multiple suppressing cannot be achieved in such a case. Different from the conventional techniques that are applied on CMP gathers the new method presented in this paper is directly applied on shot gathers. Based upon the ideas of event realigning and adaptive energy removal of multiples, the approach can directly eliminate reverberations on shot gathers using the linear Radon transforms. Field data test results demonstrate that this new method is robust for eliminating the reverberations on shot gathers. |
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| Keywords: | multiple attenuation marine reverberation Radon transform event realigning |
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