Subantarctic Zone (SAZ) Project and Sediment Trap Moorings

Please also see the child records of this project for access to data. Attached to this record are the originally supplied datasets for 1997-1998, and also summary files and mooring diagrams supplied in 2012. Taken from the 2008-2009 Progress Report:Progress against objectives:The key to advancing the objective of understanding ocean processes controlling uptake of atmospheric CO2 is the ability to deploy moored autonomous samplers and sensors in Southern Ocean surface waters capable of quantifying seasonal cycles in biological and biogeochemical processes. Our effort in the last 12 months has focused on development of a robust mooring platform to carry these devices. We deployed two different engineering test designs, known as Pulse 5 Heavy and Pulse 5 Light. Both designs survived 6 months in the sea, including wave heights up to 12 meters, while transmitting mooring tensions, mooring accelerations, and GPS positions live to the internet (www.imos.org.au). Following this success we are preparing to deploy the next version of Pulse with scientific instruments to measure temperature, salinity, oxygen, and phytoplankton fluorescence.In addition we deployed a deep ocean mooring with time-series sediment traps to quantify sinking particle fluxes, and in-situ settling columns to determine particle sinking rates. Taken from the 2009/2010 Progress Report:Progress against objectives:Two voyages were awarded by the Australian Marine National Facility to use RV Southern Surveyor to service these Southern Ocean Time Series (SOTS) moorings in the 2009/10 season, and for this reason the shiptime awarded to this project by AAS was not needed and was relinquished. This arrangement will continue in 2010/11 for which the MNF has again awarded two voyages in September 2010 and April 2011.The fieldwork in 2009/10 was very successful:i) the SAZ deep sediment trap mooring was recovered in September 2009 and redeployed for recovery in September 2010.ii) the PULSE biogeochemistry mooring was deployed in September 2009 and functioned beautifully prior to recovery in March 2010 for servicing. It will be redeployed in September 2010.iii) the SOFS Southern Ocean Flux Station mooring was completed and deployed in March 2010 for recovery in April 2011, and redeployment in September 2011.如需获取本数据集，请查阅本项目的子记录。本记录附带1997-1998年的原始提交数据集，以及2012年提交的汇总文件与锚系装置示意图。 以下内容节选自2008-2009年度进展报告：目标达成进展： 阐明调控大气二氧化碳吸收的海洋过程，核心在于可在南大洋表层水域部署锚系自主采样器与传感器，以量化生物过程与生物地球化学过程的季节循环特征。过去12个月中，本团队的研究重点为开发可搭载此类设备的高可靠性锚系平台。我们部署了两款不同的工程测试平台，分别命名为Pulse 5 Heavy与Pulse 5 Light。两款测试平台均顺利完成了6个月的海上试验，可抵御最高12米的海浪，并实时将锚系张力、锚系加速度与GPS定位数据传输至互联网（www.imos.org.au）。此次试验成功后，我们正筹备部署搭载科学仪器的新一代Pulse平台，该平台可测量温度、盐度、溶解氧与浮游植物荧光信号。此外，本团队还部署了一套搭载时间序列沉积物捕集器的深海锚系装置，用于量化沉降颗粒通量；同时部署了原位沉降柱，以测定颗粒沉降速率。 以下内容节选自2009/2010年度进展报告：目标达成进展： 2009/2010年度，澳大利亚国家海洋研究设施（Australian Marine National Facility, MNF）批准了两项航次计划，将使用“南方考察者”号研究船（RV Southern Surveyor）对南大洋时间序列（SOTS）锚系装置进行维护。因此本项目获得的澳大利亚南极局（AAS）船时配额未被使用，已予以退还。该协作安排将延续至2010/2011年度，MNF已再次批准两项航次计划，分别定于2010年9月与2011年4月执行。 2009/2010年度的野外作业取得圆满成功： 1. SAZ深海沉积物捕集器锚系装置于2009年9月完成回收，并于2010年9月重新部署以进行后续回收作业。 2. PULSE生物地球化学锚系装置于2009年9月完成部署，运行状态良好，于2010年3月回收进行维护，并将于2010年9月重新部署。 3. SOFS南大洋通量站锚系装置于2010年3月完成组装与部署，计划于2011年4月回收，并于2011年9月重新部署。