东海陆架多次波特点及去除策略  

CHARACTERISTICS OF THE MULTIPLES IN THE EAST CHINA SEA AND ELIMINATION METHOD

作　　者：王惠东[1,2,3] 潘军[2,3,4] 颜中辉[2,3,4] 刘鸿[2,3,4] 杨佳佳[2,3,4] 

机构地区：[1]中国石油大学(华东),青岛266580 [2]国土资源部海洋油气资源与环境地质重点实验室,青岛266071 [3]中国地质调查局青岛海洋地质研究所,青岛266071 [4]青岛海洋科学与技术国家实验室海洋矿产资源评价与探测技术功能实验室,青岛266071

出　　处：《海洋地质前沿》2017年第4期64-70,共7页Marine Geology Frontiers

基　　金：国家自然科学基金(41406071);中国地质调查项目(DD20160153)

摘　　要：在东海陆架地区的地震资料中存在着多种类型的多次波,使得地震资料难以真实地反映地下地质信息,必须在地震资料处理过程中加以去除。根据多次波的不同特点,采用了3种技术方法组合去除的策略:采用SWD技术去除东海陆架普遍发育的与海底相关的短周期多次波;SRME技术对强波阻抗界面产生的近道多次波压制效果明显;抛物线Radon变换可以较好地解决中远偏移距的长周期多次波。通过对东海陆架大量多道地震资料的处理,采取3种技术方法的优化组合基本上都可以取得较好的处理效果。Many types of multiples are observed in the seismic profiles from the East China Sea shelf area, which have brought up a lot of difficulties for geological interpretation. According to the differ- ent characteristics of multiples, three methods are proposed in this paper for multiple attenuation. The SWD approach is used to remove the short-period multiples of the sea bottom. The SRME tech- nique is effective for suppressing the near-offset multiple of the strong wave impedance interface. The parabolic Radon transform can attenuate the long-period multiple of far-offset. In the processing of a large number of multi-channel seismic data of the East China Sea shelf, the optimal combination of the three techniques is recommended for better effect.

关 键 词：东海陆架 多次波 SWD SRME 抛物线Radon 

分 类 号：P631.443[天文地球—地质矿产勘探]