CAJ | 학술논문

面波是陆上地震勘探中的主要干扰波之一，常规的面波压制方法仅从面波与反射信号在某一方面的差异进行压制，会在一定程度上造成有效信号的损伤。利用不同尺度面波与有效信号的差异，提出一种分尺度分级压制面波的方法。对地震数据的高尺度部分在Shearlet域进行反射波与面波的分离，对地震数据的低尺度部分在S域采用经验模态分解（EMD）的方式进行信噪分离。将该方法用于模型及实际资料处理，处理结果表明了该方法的正确性与有效性；并与Curvelet域的阈值法进行了对比，结果表明此方法在保持反射信息的同时面波压制更彻底。
면파시륙상지진감탐중적주요간우파지일，상규적면파압제방법부종면파여반사신호재모일방면적차이진행압제，회재일정정도상조성유효신호적손상。이용불동척도면파여유효신호적차이，제출일충분척도분급압제면파적방법。대지진수거적고척도부분재Shearlet역진행반사파여면파적분리，대지진수거적저척도부분재S역채용경험모태분해（EMD）적방식진행신조분리。장해방법용우모형급실제자료처리，처리결과표명료해방법적정학성여유효성；병여Curvelet역적역치법진행료대비，결과표명차방법재보지반사신식적동시면파압제경철저。
Surface wave is one of the main interference waves in land-based seismic exploration.In conventional methods for surfacewave suppression are only based on a difference in the properties of reflection signals and surface waves,and may result in energyloss of effective signals to some extent.In view of differences between the surface waves of different scales and effective signals,thispaper proposes a surface wave suppression method based on scale-partition and grading.Surface waves and reflection waves in high-scale seismic data are separated in Shearlet domain;Using the Empirical Mode Decomposition Method,signal and noise of low-scaleseismic data are separated in S domain.This suppression method is applied in modeling and processing of real data,which proves itscorrectness and validity.As compared with the threshold method in Curvelet domain,this method can achieve more complete sup-pression of surface waves,while keeping the reflection information.