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多次波是地震勘探中常见的一种干扰波,传统的多次波压制方法主要针对长周期多次波,不适应于正常时差较小的近偏移距短周期多次波。基于Lokshtanov等人提出的多次波衰减原理,本文导出了频率—慢度域多次波压制因子,利用海底面的一次鸣震来估算海底反射系数,在频率-慢度域实现地震数据中的多次波压制。通过实际地震数据处理,结果表明文中所提出的方法可以较为有效地压制近偏移距短周期多次波,从而为地震资料后续处理提供了基本保证。
Multiple waves are a kind of common interference wave in seismic prospecting. The traditional multiple suppression method is mainly for long period multiples, which is not suitable for short offset multiples of near offset with smaller normal time difference. Based on the principle of multiple attenuation proposed by Lokshtanov et al., This paper deduces the multiple suppression factor of frequency-slowness domain, and estimates the seafloor reflection coefficient by using a one-time tingling on the sea floor. In the seismic data of frequency-slowness domain Multiple repression. The results show that the proposed method can suppress the near-offset short-period multiples more effectively, which provides a basic guarantee for the subsequent processing of seismic data.