Barkley Canyon Upper Slope Echosounder, Bioacoustic Deployed 2021-03-26

The ASL AZFP Echosounder 55016 was deployed on 2021-03-26 at Barkley Canyon Upper Slope. Upper Slope is a location within Barkley Canyon, which is located on the upper continental slope. This device is a Echosounder, Bioacoustic. Echosounders are used to measure acoustic backscatter as a proxy for detecting zooplankton, fish, bubbles or other particles in the water-column. An echosounder has one or more transducers which emit acoustic pulses at a particular frequency. When the pulses strike animals or other objects in the water, echoes are produced, which can be detected and converted by the transducers back into electrical signals. Software is then used to determine distances, sizes, concentrations and movements of organisms and other objects in the water. It was deployed on a profiling platform. Data from this deployment were archived and made available through Ocean Networks Canada's Oceans 2.0 digital infrastructure, with quality assurance and derived data products following established practices.ASL AZFP回声测深仪（Echosounder）55016于2021年3月26日部署于巴克利峡谷上斜坡区域。该上斜坡区域是巴克利峡谷的一处点位，而巴克利峡谷坐落于大陆架上斜坡地带。本设备为生物声学回声测深仪（Bioacoustic Echosounder），其通过测量声学背散射信号作为替代指标，用以探测水柱中的浮游动物、鱼类、气泡或其他颗粒物。回声测深仪配备一个或多个换能器（transducer），可发射特定频率的声脉冲；当声脉冲撞击水中的生物或其他物体时，会产生回波，换能器可探测该回波并将其转换为电信号。后续通过软件即可计算得出水体中生物及其他物体的距离、尺寸、浓度与移动状态。本设备部署于剖面观测平台之上。本次部署获取的所有数据已完成归档，并通过加拿大海洋网络（Ocean Networks Canada）的Oceans 2.0数字基础设施对外共享；所有数据均遵循既定规范开展质量保障工作，并生成符合标准的衍生数据产品。