1科学背景海洋资源特别是海洋油气等矿产资源的勘探和开发与国民经济发展关系重大。被动大陆边缘盆地的陆坡区及深海平原区发现了许多大型油气田,水深从300m到3 000m。深水区的坳陷中沉积巨厚,采用常规的反射地震方法所采集的资料中,中深层地震信号微弱,干扰严重,地震反射信噪比 1 Scientific Background Exploration and development of marine resources, especially marine oil and gas, have a great bearing on the development of the national economy. Many large oil and gas fields have been discovered in the continental slope and deep-sea plain areas of the passive continental margins, with water depths ranging from 300 m to 3 000 m. Depth of depression in the deep water deposits thick, using conventional reflection seismic data collected by the medium and deep seismic signals weak, serious interference, seismic reflection signal to noise ratio