Fraser River Delta Lower Slope Current Meter Deployed 2013-05-03

The Nortek Aquadopp Current Meter 2888 was deployed on 2013-05-03 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 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（Nortek）Aquadopp型2888号海流计于2013年5月3日布放在弗雷泽河三角洲下斜坡站位。该站位位于弗雷泽河三角洲下斜坡区域，水深约150米。本设备为海流计。声学海流计（Acoustic Current Meters，ACM）利用多普勒效应测量海流的流速与流向。Aquadopp型海流计的传感器探头内置3个声学换能器、一个倾斜传感器、一个温度传感器以及一个压力传感器。该仪器发射短声脉冲，随后接收回波以测量声频的频移变化，通过该频移变化即可确定海流流速。本次布放采用固定式平台。本次布放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 3.0数字基础设施对外共享；所有数据均经过质量管控，并基于行业通用规范生成衍生数据产品。