港工技术
港工技術
항공기술
PORT ENGINEERING TECHNOLOGY
2014年
6期
79-85
,共7页
海洋工程%海洋地震%数据处理%小波变换%经验模态分解
海洋工程%海洋地震%數據處理%小波變換%經驗模態分解
해양공정%해양지진%수거처리%소파변환%경험모태분해
marine engineering%offshore earthquake%data processing%wavelet transform%empirical mode decomposition(EMD)
本文以海洋工程地质地球物理模型和我公司完成的海洋工程地震勘探数据为依托,综合分析了小波变换、EMD处理、基于EMD小波阈值去噪处理等数据处理技术对于海洋地震勘察数据处理的作用,论述了基于经验模态分解的小波阈值去噪方法在浅海地震勘探数据处理中对于压制噪声、提高信噪比和分辨率的作用。该方法对于细化地震勘探的数据成果,实现物探成果的精细化地质分层具有积极意义。
本文以海洋工程地質地毬物理模型和我公司完成的海洋工程地震勘探數據為依託,綜閤分析瞭小波變換、EMD處理、基于EMD小波閾值去譟處理等數據處理技術對于海洋地震勘察數據處理的作用,論述瞭基于經驗模態分解的小波閾值去譟方法在淺海地震勘探數據處理中對于壓製譟聲、提高信譟比和分辨率的作用。該方法對于細化地震勘探的數據成果,實現物探成果的精細化地質分層具有積極意義。
본문이해양공정지질지구물리모형화아공사완성적해양공정지진감탐수거위의탁,종합분석료소파변환、EMD처리、기우EMD소파역치거조처리등수거처리기술대우해양지진감찰수거처리적작용,논술료기우경험모태분해적소파역치거조방법재천해지진감탐수거처리중대우압제조성、제고신조비화분변솔적작용。해방법대우세화지진감탐적수거성과,실현물탐성과적정세화지질분층구유적겁의의。
Based on offshore earthquake data collected by our company,geological and geophysical model was built to fully analyze the effect of wavelet transform,empirical mode decomposition processing and EMD wavelet threshold de-noise on offshore earthquake data processing,and discuss the wavelet threshold de-noising method based on EMD,which played an important role in the suppression of noise,the improvement of signal to noise ratio (SNR)and resolution during shallow sea seismic data processing. This method has a positive significance in refining seismic data and achieving fine layer classification based on the geophysical results.