【摘要】 应用Ｈａｒｇｒｅａｖｅｓ的反Ｑ滤波算法，可准确校正零炮检距射线路径条件下地震记录的频散吸收。研究表明，只要能够获得时变的品质因数Ｑ结构，这种反Ｑ滤波算法也同样适用于非零炮检距射线路径条件下地震记录的反Ｑ滤波。本文叙述了采用Ｈａｒｇｒｅａｖｅｓ算于以相邻层间地震子波相似系数的相关性确定品质因数Ｑ的方法原理，并对相速度弥散式及参考频率ω＿ｒ的选取方法进行了讨论，数值模拟结果表明，用该方法提取的Ｑ值，可实现迭前反Ｑ滤波处理，能使浅、中、深层地震子波波形基本保持一致。更多还原

【Abstract】 The dispersion abeorption of seismic data with zero offset ray peth can be reduced significantly byusing the Hargreavers′s inverse Q filter.It has been shown that onece the time-variing Q factorsknown,the inverse Q filter algorithm could also be extented to non-zero offset seismic data。This po per deals with the determination of quality-factor Q based on the semblance of seismicwavelets in successive layers by Hargreaves′s Opreator methed and the selection of dispersion relation re-lated to phase velocity and reference frequeeies ωr.Numerical modeling results show that the prestack-ing inverse Q filterring can be implimented by using the abstracted Q values and the shaps of seismicwavelets both from shallow layers and from middle- deep layers will be kept consistently。更多还原