海上多次波的交互模拟

Interactive simulation of marine seismic multiple

1. 中科院南海所,广州510301;2. 海洋石油南海东部公司,广州510240

Institute of South China Sea, Chinese Academy of Sciences, Guangzhou 510 301

通过射线追踪计算模拟海底多次波、层间多次波及全程多次波。计算模拟在工作站上通过交互菜单管理。针对南海珠江口盆地南部多次波严重地区的地质模型,进行了模拟试验。

Seabed, peg-leg, and long-range multiples were simul ated and computed i nteractively on workstation by ray tracing scheme. The authors conduct tests on the geologic models in southern Pearl River Mouth Basin, South China Sea, an are a with serious multiples. Through the constrast between real shot records and ze ro-offset records, it can be judged that the reflections in the deep part of th e surveying area are not multiples, but effective waves.