水域地震映像法及其在海洋地质调查中的应用

随着水上(海洋)地质调查的迅速发展,曾在陆地地质调查中发挥过重要作用的地震映像法便延伸到水域(海洋)地质调查中来。但由于水陆环境不同,水域地震映像法的工作原理与陆域地震映像法并不相同,它只是一种浅层地震反射波探测方法——当其采用单道接收时,即为海洋地质调查中的单道地震调查;当其采用多道接收时,即为海洋地质调查中的高分辨率多道地震调查。同时,由于水域映像法在其声波发射及接收系统上有其独到之处,在海洋地质调查中可作为水域浅地层剖面测量及地震调查的补充。

A PRELIMINARY ANALYSIS OF SEAWATER SEISMIC IMAGING METHOD AND ITS APPLICATION IN MARINE GEOLOGICAL SURVEY

With the rapid development of geological survey in marine areas,it is highly demanded that the seismic imaging method which has played an important role in geological survey on land be extended to the offshore waters.However,owing to the difference between the land and sea,the seismic imaging method used in the sea is different with that used on land.The seismic image in water is in fact a kind of shallow profiler receiving reflected waves.It is so called single channel seismic or multiple channels seismic while reflected waves are received by a single channel or multiple channels.Viewing the advantages of the method in wave transmitting and receiving,the seawater seismic wave imaging method can be applied as a supplement to shallow profiling and other marine seismic surveys.