胜利埕岛海域海底松软沉积物声学探测方法探讨

Discussion on Acoustic Exploration Method of Soft Bottom Sediment in the Shengli Chengdao Sea Area

胜利埕岛海域位于复杂的黄河三角洲沉积体系中。由于黄河的断流 ,在风浪和海流作用下原三角洲体系受到侵蚀 ,在部分海底具有松散沉积物沉积。采用侧扫声纳、双频测深仪及浅地层剖面仪 3种海上物探方法 ,对埕岛海域海底松软沉积物进行声学探测 ,确定了浮泥、软土层顶、海底界面及浮泥和软土层和海底界面及浮泥和软土层的厚度 ,研究了埕岛海域海底松软沉积物的基本分布变化规律 。

The Shengli Chengdao sea area is located in the depositional system of the Yellow River delta, the original delta system has been eroded under the actions of wave and current, and the soft sediments are distributed on part of sea bottom. The side scan sonar, dual frequency echo sounder and subbottom profiler were used to make acoustic surveys of soft bottom sediments in the Chengdao sea area, the interfaces between fluid mud, soft soil layer and sea bottom and the thicknesses of fluid mud and soft soil layer were determined, and the basic distributions and variabilities of soft bottom sediments in the Chengdao sea area were studied, which provides basis for marine engineering geologic surveys in future.