Patricia Bay Gas Tension Device Deployed 2012-02-26

The Pro-Oceanus GTD 24-36-07 was deployed on 2012-02-26 at Patricia Bay. Patricia Bay is located in the Saanich Inlet, on the southern tip of Vancouver Island. This device is a Gas Tension Device. Gas Tension Device (GTD) instruments measure gas tension, or total dissolved gas pressure. The total dissolved gas pressure in seawater is the sum of the partial pressures of all dissolved gases. The GTD operates by equilibrating a small volume of air trapped behind a semi-permeable membrane that is resistant to seawater. When the air sample is isolated from hydrostatic pressure, the measured pressure is solely from the gases in the seawater. This internal pressure is measured using a very stable pressure sensor. It was deployed on a fixed 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.Pro-Oceanus GTD 24-36-07型设备于2012年2月26日部署于帕特里夏湾（Patricia Bay）。帕特里夏湾地处温哥华岛南端的萨尼奇湾（Saanich Inlet）内。该设备为气体张力装置（Gas Tension Device，GTD），此类仪器用于测量气体张力或总溶解气体压力。海水中的总溶解气体压力为所有溶解气体的分压之和。该气体张力装置的工作原理为：在抗海水侵蚀的半透膜后方截留少量空气以达到平衡状态。当该空气样本与静水压力隔离后，测得的压力仅来源于海水中的溶解气体。内部压力通过高度稳定的压力传感器进行采集测量。本次部署将设备安装于固定平台之上。本次采集的数据已通过加拿大海洋网络（Ocean Networks Canada）的Oceans 2.0数字基础设施完成归档并对外开放，其质量保障流程与衍生数据产品均遵循行业既定规范。