The conclusions are drawn as follows : ( 1 ) The submarine topography in study area slopes from land to sea on the whole. It can be divided into four main terrain units, bank slope and reef zone, gulf zone, modern estuary and shelf slope. 得出的结论如下:(1)研究区海底地形总体由陆向海倾斜,等深线呈辐射状向外扩散,大致可划分为岸坡与岛礁区、湾口区、现代河口区和陆架斜坡区4个地形单元。
A great deal of experience of decommissioning and removal has been gained from the practice in the Gulf of Mexico and California Outer Continental Shelf as well as the northern North Sea. 目前在国际上有关平台拆除的经验主要来自于墨西哥湾和加利福尼亚州外大陆架海域以及欧洲北海的北部;