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《Marine Geology & Quaternary Geology》 2006-06
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COMMON CONVERSION POINT GATHERING AND TIME-VARIANT STATIC CORRECTION

HE Bing-shou~(1),ZHANG Hui-xing~(1),PENG Su-ping~(2)(1 Marine Geoscience College,Ocean University of China,Qingdao 266100,China;2 China University of Mining and Technology,Beijing 100083,China)  
When the velocity ratio between compressional wave and shear wave is fixed,the horizontal location of conversion point of each sample in a trace is different,so the traditional method of trace gathering can only gather the common conversion points(CCP) of a certain depth,which cannot guarantee that all the samples' conversion points are at the same location.In this paper,the authors present a new method for CCP binning,and the CCP gather obtained from this method is a really CCP gather in which the projection of all samples' conversion points are at the same location.Based on this method,a time-variant short-wavelength static correction method for converted waves is proposed and the real data processing results prove the method feasible and effective.
【Fund】: 国家重点基础研究发展规划项目(2002CD211707)
【CateGory Index】: P631.44
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