Barkley Canyon Multibeam Non-rotating Sonar Deployed 2019-09-16

The Didson 3000 SN374 was deployed on 2019-09-16 at Barkley Canyon. Barkley Canyon is a submarine canyon located on the continental shelf and slope break. Features include exposed gas hydrates and their associated ecosystems. Accumulation and movement of sediment, upwelling, and plankton blooms are studied in this area. This device is a Multibeam Non-rotating Sonar. Multibeam non-rotating sonars transmit a pulse at a certain frequency along a number of narrow beams. The sonar processor looks at the return signal for each pulse and decides where along that pulse return time lays the strongest return, giving a single point in space, such as water column depth. 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.

Didson 3000 SN374于2019年9月16日部署在巴克利峡谷（Barkley Canyon）。巴克利峡谷是一处位于大陆架与陆坡转折带的海底峡谷（submarine canyon），其特征包括裸露的天然气水合物及其相关生态系统，该区域主要研究沉积物的堆积与运移、上升流以及浮游生物水华现象。该设备为多波束非旋转声呐（Multibeam Non-rotating Sonar），这类声呐沿多条窄波束以特定频率发射脉冲信号；声呐处理器会分析每个脉冲的回波信号，确定在脉冲返回时间轴上最强回波的位置，从而得到空间中的单个点（例如水柱深度）。该设备部署于固定平台之上。此次部署产生的数据已完成归档，并通过加拿大海洋网络（Ocean Networks Canada）的Oceans 3.0数字基础设施对外开放；数据的质量保证及衍生数据产品均遵循既定规范。