深拖系统在南海深水工程勘察中的应用

Deep tow system and its application in the deep-sea survey of South China Sea

利用DT-1深拖系统搭载EM2000多波束测深系统、EdgeTech侧扫声呐及浅地层剖面系统等设备在南海北部陆坡区域进行了大范围的深入调查,获取了调查区丰富的地形、地貌及浅地层的数据。在对定位数据滤波的基础上,借助Caris、Triton和Kingdom Suite等软件分别对上述数据信息进行了高保真、精细化处理和多模式展示。资料处理成果清晰地揭示了调查区的滑坡、陡坡、凹沟等特殊地形地貌的特征,为评价调查区的工程地质条件提供了丰富的信息。本文探讨并总结了历次深拖调查作业所获得的技术经验,可为深水海域的类似调查提供参考和借鉴。

Equipped with EM2000 multi-beam sounding system, EdgeTech side scan sonar and sub- bottom profiler sys tern, DT-1 deep tow system made a thorough investigation in the South China Sea and obtained materials about the terrain, landform and shallow seismic data. Based on the location data filtering, through the Caris, Triton and Kingdom Suite software, the data information can be processed in several aspects, such as high fidelity, fine pro- cessing and multiple mode display. Processing results can clearly reveal the geological conditions of the survey area： landslide, slope, ditch or other special landform, and then provides useful information for evaluation. This paper summarized experiences from all past deep tow survey operations for reference.