Fraser River Delta Upper Slope Current Meter Deployed 2014-03-08

The Nortek Vector Current Meter VEC4594 was deployed on 2014-03-08 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 VEC4594型海流计（Nortek Vector Current Meter VEC4594）于2014年3月8日部署于弗雷泽河三角洲上斜坡（Fraser River Delta Upper Slope）。该站位地处弗雷泽河三角洲上斜坡区域，水深约100米。本设备属于海流计（Current Meter）范畴。声学海流计（Acoustic Current Meters, ACM）借助多普勒效应（Doppler Effect）测量海流的流速与流向。阿夸多普（Aquadopp）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、1个温度传感器及1个压力传感器。此类声学海流计会发射短脉冲声波，随后接收回波以检测音调或频率的变化，通过音调变化即可推算海流流速。本设备部署于固定平台之上。本次部署获取的观测数据已完成归档，并通过加拿大海洋网络（Ocean Networks Canada）的Oceans 3.0数字基础设施对外公开共享，其质量控制流程与衍生数据产品均遵循既定实践规范。