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《Chinese Journal of Geophysics》 2003-02
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THE FORWARD Q METHOD FOR COMPENSATING ATTENUATION AND FREQ-UENCY DISPERSION USED IN THE SEISMIC PROFILE OF DEPTH DOMAIN

YAO ZHENXING 1 GAO XING 1 LI WEIXIN 2 1 Institute of Geology and Geophysics, CAS, Beijing 100101, China 2 CNOOC, Gaobeidian 074010, China  
Based on the laws of inelastic media, this paper gives a forward Q method for compensating attenuation and frequency dispersion used in the seismic profile of depth domain. According to the forward and inverse results of synthesized seismic records, our Q filtrating operator of the depth domain is consistent with the seismic laws in the absorbing media, which not only considers the effect of the media absorbing of the waves, but also fits the deformation laws, namely the frequency dispersion of the body wave. We processed two post stacked profiles about 60km, a neritic area of China. The result shows that after the forward Q filtering of the depth domain, the wide of the wavelet of the middle and deep layers is compressed, the resolution and signal noise ratio are enhanced, and the primary sharp and energy distribution of the profile are retained.
【Fund】: 中国科学院知识创新工程重要方向项目 (KZCX2 - 1 1 2 ) .
【CateGory Index】: P631
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