Fraser River Delta Upper Slope Profiling Sonar Deployed 2022-03-11

The Imagenex 881A Profiling Sonar 5715 was deployed on 2022-03-11 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 3.0 digital infrastructure, with quality assurance and derived data products following established practices.

Imagenex 881A型剖面声呐5715（Imagenex 881A Profiling Sonar 5715）于2022年3月11日部署于弗雷泽河三角洲上斜坡海域。该站点位于弗雷泽河三角洲上斜坡区域，水深约100米。本设备为剖面声呐，此类设备多用于需开展定量测量的水下剖面测绘作业。剖面声呐可发射极窄的锥形波束，单次声脉冲（ping）即可生成一个测点，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间的声程信息。本次部署将设备搭载于固定平台之上。此次采集的数据已完成归档，并通过加拿大海洋网络（Ocean Networks Canada）的Oceans 3.0数字基础设施对外共享；所有数据均遵循既定规范开展质量管控，并生成了配套衍生数据产品。