Juan de Fuca Strait Current Meter Deployed 2021-12-17

The Nortek Aquadopp Current Meter A3L5390 AQD8380 was deployed on 2021-12-17 at Juan de Fuca Strait. Juan de Fuca Strait is a large body of water that connects the Salish Sea to the Pacific Ocean. 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.Nortek Aquadopp 海流计（Current Meter）A3L5390与AQD8380于2021年12月17日部署于胡安德富卡海峡（Juan de Fuca Strait）。胡安德富卡海峡是连通萨利希海（Salish Sea）与太平洋的大型水域。该设备为海流计，声学海流计（Acoustic Current Meter，ACM）借助多普勒效应（Doppler Effect）测量海流的流速与流向。Aquadopp海流计的传感器探头内置3个声学换能器、一台倾斜传感器、温度传感器与压力传感器。该仪器发射短脉冲声波，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。本次部署采用固定式平台搭载。本批次部署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数字基础设施对外公开共享，相关数据已依照既定规范完成质量管控，并生成配套衍生数据产品。