学术
炮集域压制海水鸣震的τ—p变换法
李键[1,2] 王修田[1,2]
[1]中国海洋大学海洋地球科学学院,山东青岛266100 [2]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
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。[著者文摘]
文章出处:
《中国海洋大学学报》-2008年38卷1期,128 -121-124,128页
栏目信息:
分 类 号:
文献标识码:
A
文章编号:
1672-5174（2008）01-121-05
Marine Reverberation Attenuation on Shot Gathers Using τ- p Transform
LI Jian, WANG Xiu-Tian （Ocean University of China, 1. College of Marine Geosciences; 2. Lab of Seafloor Science ＆ Exploration Technique, Qingdao 266003, China）
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.[著者文摘]
Key words:
multiple attenuation; marine reverberation; Radon transform; event realigning
基金资助:
国家高技术研究发展计划项目（2006AA092358）资助
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