CCS - MV Bluefin 2017 V01 Smith McIntyre Grab Sediments

Project Overview: A range of solutions will be required to reach globally agreed emissions reductions targets for carbon dioxide (CO2). Carbon capture and storage (CCS) is part of the suite of technologies that will contribute to lowering atmospheric emissions of CO2 from Australia's energy system. There are a wide variety of technologies at various stages of technical and commercial readiness, with more development underway for cost effective CO2 capture and storage. Our research will provide new knowledge to inform cost-efficient measurement, monitoring and verification (MMV) of the environment of CCS projects in coastal waters.--o--The Smith MacIntyre Grab is designed to collect ocean sediment with a sampling area of 0.1m sq. This grab is mounted on a stainless steel frame suspended from a pair of lowering cables (bridles) attached to the bucket arms. Springs activated by a trigger mechanism, released when the foot plates come into contact with the ocean floor, force the bucket jaws into the sediment in order to collect the sample. Safety features have been fitted to the grab to prevent the tripping mechanism from being triggered prematurely. Screens have also been fitted to the tops of the buckets, along with silicone flaps, to prevent sediment from being washed out during retrieval. CSIRO.Sediment samples were collected during BLU201701. The samples were sent from Hobart, TAS to Kensington, WA for analyses on 26 February 2018.项目概述：为达成全球共识的二氧化碳（CO₂）减排目标，需配套一系列解决方案。碳捕获与封存（Carbon Capture and Storage, CCS）是助力降低澳大利亚能源系统向大气排放CO₂的技术组合之一。当前已有多款处于不同技术与商业化成熟度阶段的相关技术，且针对低成本高效的CO₂捕获与封存技术仍在推进更多研发工作。本研究将提供全新知识，用于指导沿海水域CCS项目环境的低成本高效测量、监测与验证（Measurement, Monitoring and Verification, MMV）。 --o-- 史密斯-麦金泰尔采泥器（Smith MacIntyre Grab）专为采集海洋沉积物设计，采样面积达0.1平方米。该采泥器安装于不锈钢框架之上，通过连接铲斗臂的两根下放钢缆（牵索）进行悬挂。由触发机构驱动的弹簧会在触板接触海底时释放，推动铲斗颚部切入沉积物以完成采样。采泥器配备了安全装置，可防止触发机构过早触发。铲斗顶部还加装了防护筛网与硅胶挡片，以避免回收过程中沉积物被冲失。 沉积物样本于BLU201701航次期间由澳大利亚联邦科学与工业研究组织（Commonwealth Scientific and Industrial Research Organisation, CSIRO）完成采集。样本于2018年2月26日从塔斯马尼亚州霍巴特市运往西澳大利亚州肯辛顿进行分析。