Particle Export and Remineralization in the Southern Ocean south of Australia: a WHOI Contribution to the Australian 'SAZ PROJECT'

0087530Honjo拟议的工作将在澳大利亚南部极地前锋地带提供和维护一个深海沉积物捕集器系泊设施，这是对澳大利亚南极合作研究中心在亚南极地带部署的类似澳大利亚沉积物捕集器系泊设施的补充。澳大利亚的方案最近被延长；这项提议工作将把联合工作延长两年，直到2003年。具体目标是使用放射性核素技术检查颗粒物质的产生、再矿化和出口，以便评估沉积物捕集器的效率。另一个目标是记录在南部高纬度通风的中等深度水团是否能为人为二氧化碳提供一个临时储存库，并了解这一区域在大气二氧化碳水平的长期趋势和年际变化中的作用。

0087530HonjoThe proposed work will provide and maintain of a deep sea sediment trap mooring in the Polar Frontal Zone south of Australia, which complements a similar Australian sediment trap mooring in the Subantarctic Zone deployed by the Australian Antarctic Cooperative Research Centre. The Australian program has recently been extended; this proposal work will extend the joint work for two years until 2003. The specific objective is to examine the production of particulate matter, remineralization, and export using a radionuclide technique that will allow the evaluation of sediment trap efficiency. A further objective is to document whether intermediate depth water masses that are ventilated at high southern latitudes can provide a temporary reservoirfor anthropogenic carbon dioxide, and to understand the role of this region in the long term trends and interannual variability of atmospheric carbon dioxide levels.