Fraser River Delta Lower Slope Acoustic Doppler Current Profiler 1 MHz Deployed 2016-05-01

The Nortek Aquadopp HR-Profiler 1 MHz 5281 was deployed on 2016-05-01 at Fraser River Delta Lower Slope. This site is located on the lower slope of the Fraser River delta, where depth is approximately 150 metres. This device is a Acoustic Doppler Current Profiler 1 MHz. Acoustic Doppler Current Profilers are hydroacoustic instruments, similar to sonars. ADCPs measure current speed and direction at multiple predetermined depths simultaneously. ADCPs use the Doppler effect of sound waves that are scattered by particles in seawater over a depth range. 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.

Nortek Aquadopp HR-Profiler 1 MHz 5281型观测设备于2016年5月1日部署于弗雷泽河三角洲下斜坡测点。该测点地处弗雷泽河三角洲下斜坡区域，水深约150米。此设备为1兆赫兹声学多普勒海流剖面仪（Acoustic Doppler Current Profiler，ADCP）。声学多普勒海流剖面仪属于水声探测仪器，其工作原理与声呐类似。ADCP可同时测定多个预设深度层的海流流速与流向，通过在指定深度范围内被海水中颗粒物散射的声波的多普勒效应实现测量。该设备搭载于固定式平台开展观测。本次部署所获数据集已完成归档，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；其质量管控流程与衍生数据产品均遵循行业既定规范。