【摘要】 东海盆地L凹陷多次波非常发育 ,严重干扰了地质记录。通过对野外单炮记录及其自相关、近道剖面、初步叠加剖面、合成记录和速度谱等资料的分析研究 ,结合该地区地质分层结果和地层岩性情况 ,分析了L凹陷多次波的类型、特征和成因 ,认为该地区主要发育由T33界面与海底和海面产生的多次波。针对L凹陷多次波特征 ,采用τ p域预测反褶积与双曲线速度滤波组合 ,或τ p域预测反褶积与T X2 域F K滤波组合对多次波进行压制 ,取得了很好的效果。更多还原

【Abstract】 Multiple reflection is very developed in L depression of East China Sea, and has severely interfered with normal seismic records. By studying field single shot records and their autocorrelations, single traces, brute stacks, synthetic records and velocity spectrums, and combining with the geological formation and lithology in the region, the multiples’types, features and origins are analyzed in L depression, and it can be considered that the multiples are mainly generated among T33, sea bottom and sea surface. Therefore, a combination of τ??p domain predictive deconvolution with hyperbolic velocity filtering, or a combination of τ??p domain predictive deconvolution with T?X2 domain F?K filtering, has been used to make multiple rejection, resulting in good effects.更多还原