Fraser River Delta Upper Slope Profiling Sonar Deployed 2016-05-03

The Imagenex 881A Profiling Sonar 5715 was deployed on 2016-05-03 at Fraser River Delta Upper Slope. This site is located on the upper slope of the Fraser River delta, where depth is approximately 100 metres. This device is a Profiling Sonar. Profiling sonars are devices used in underwater profiling where quantitative measurements are required. A profiling sonar transmits a very narrow, conical beam that generates one point per ping, providing very high resolution. Reflected signals, or echoes, are recorded and analyzed in order to develop an image of scanned area that includes information on the range between the sonar and the scanned object. It was deployed on a fixed platform. Data from this deployment were archived and made available through Ocean Networks Canada's Oceans 2.0 digital infrastructure, with quality assurance and derived data products following established practices.

Imagenex 881A型剖面声呐（Profiling Sonar）5715于2016年5月3日部署于弗雷泽河三角洲上斜坡区域。该站点位于弗雷泽河三角洲上斜坡，水深约100米。该设备为剖面声呐，此类设备多用于需开展定量测量的水下剖面测绘工作。剖面声呐发射极窄的锥形波束，每次声脉冲（ping）可生成一个测量点，具备极高的空间分辨率。系统会记录并分析反射信号（即回波），以此构建扫描区域的成像结果，其中包含声呐与扫描目标之间的距离信息。本次部署搭载于固定平台之上。此次部署获取的数据已完成归档，并通过加拿大海洋网络（Ocean Networks Canada）的Oceans 2.0数字基础设施对外开放；数据的质量保证与衍生数据产品的生成均遵循既定行业规范。