论文详情
压制相干噪声的方法通常基于两个基本假设:①相干噪声是线性的;②相干噪声与有效信号的视速度不同。但是实际地震资料往往不存在理想的相干噪声。基于上述考虑,提出一种基于局部数据规则化的相干噪声压制技术,通过在不规则观测系统局部区域利用五维插值技术求取最优解重构规则道集,让噪声满足相干的假设条件,从而实现更好的去噪效果。山地实际地震数据应用结果验证了该方法的有效性和实用性。
The methods to suppress coherent noise are usually based on two assumptions:①coherent noise is linear in the seismic record;②the apparent velocity of coherent noise is different from effective wave’s.But the actual data is always difficult to meet the above assumptions and it is hard to get ideal coherent noise.Based on this consideration,we propose a coherent noise suppression strategy by local seismic data regularization.We obtain regularization data gathers by using the five-dimensional interpolation technology in local area of irregular geometry,in which noise meets the assumptions and get better denoising effect.The application result in actual piedmont data proves the validity and practicability of the new method.
国家重点基础研究发展计划(973计划)项目(2013CB228604)、国家科技重大专项(2011ZX05046,2011ZX05019-003,2011ZX05009-003-004)联合资助。