Fraser River Delta Upper Slope Current Meter Deployed 2014-09-21

The Nortek Vector Current Meter 4896 was deployed on 2014-09-21 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 Current Meter. Acoustic Current Meters (ACM) measure current speed and direction, using the Doppler Effect. Aquadopp current meters have a sensor head that contains 3 acoustic transducers, a tilt sensor, a temperature sensor and a pressure sensor. The instrument transmits a short pulse of sound, and then listens to its echo to measure the change in pitch or frequency. The change in pitch can determine the velocity of the current. 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.

诺泰克Vector 4896型海流计（Nortek Vector Current Meter 4896）于2014年9月21日布放于弗雷泽河三角洲上斜坡（Fraser River Delta Upper Slope）。该站点位于弗雷泽河三角洲的上斜坡区域，水深约100米。本设备属于海流计范畴，声学海流计（Acoustic Current Meters, ACM）依托多普勒效应（Doppler Effect）测量海流的流速与流向。Aquadopp型海流计的传感器探头集成3个声学换能器、1个倾斜传感器、温度传感器及压力传感器。该仪器通过发射短脉冲声波并接收回波，以检测音调或频率的变化，进而通过音调变化推算海流流速。本设备布设于固定平台之上。本次布放获取的观测数据已完成存档，并通过加拿大海洋网络（Ocean Networks Canada）的Oceans 3.0数字基础设施对外开放，其质量保证流程与衍生数据产品均遵循既定行业操作规范。