Synoptic Fine-Scale Survey of the Seafloor

斯克里普斯海洋研究所将承担一项仪器开发项目，建造一个多传感器、数字Deep Tow车辆，能够在海底附近6000米深度处进行精细多波束测绘和声学后向散射成像。该系统将配置为同轴或光纤拖曳电缆，并能够根据科学要求部署传感器包。该计划是将一对110千赫侧视声纳、一个4千赫海底剖面仪、一个40千赫避避声纳、一个12千赫导航声纳、一个23.5千赫上视声纳、一个CTD、一个透射计、一个磁力计以及一组静止和电视摄像机集成到现有的拖曳车辆上。该高分辨率工具将用于研究地壳吸积过程、小尺度深海沉积过程（沉积波振幅、不对称性、波长和方向）、海底地形的尺度依赖性和海底声波后向散射等海底地质现象。最终，这些数据将为更好地理解控制脊系统和热液喷口的岩浆和构造过程之间的关系提供基础。

9504830 de Moustier The Scripps Institution of Oceanography will will undertake an instrument develoipment project to build a multi-sensor, digital Deep Tow vehicle capable of fine-scale multibeam swath mapping and acoustic backscatter imaging near the seafloor to a 6000 meter depth. The system will be configured to operate with either coaxial or fiber-optic tow cables and be capable of deploying sensor packages as science requirements dictate. The plan is to integrate a pair of 110 kHz side-looking sonars, a 4 kHz sub-bottom profiler, a 40 kHz obstacle avoidance sonar, a 12 kHz navigation sonar, a 23.5 kHz up-looking sonar, a CTD, a transmissometer, a magnetometer and a complement of still and TV cameras onto an existing towed vehicle). This high resolution tool will be used to study geological seafloor phenomena such as crustal accretion processes, small-scale abyssal sediment processes (sediment wave amplitude, asymmetry, wavelength and orientation), scale dependence of seafloor topography, and seafloor acoustic backscattering. Ultimately, the data will provide a base for better understanding the relationship between the magmatic and tectonic processes that control the ridge system and hydrothermal venting.