POC Production and Export in the Indian Ocean Sector of the Southern Ocean: A US-China Collaborative Research Program

*9726186 Pilskaln这项拟议的工作是一项关于生物物质的生物生产和输出通量的研究，以响应极锋区域内中深水团的通风。这是缅因州大学和中国南极科考队(CHINARE)的合作成果。这项工作是为中国南极补给船在印度洋普里兹湾附近海域进行的。在南半球的春季，这一地区经历了浮游植物的水华，这被认为是中深层水团通风进行营养物质运输的结果。在每年的基础上，人们认为这种水华是颗粒有机碳和生物来源二氧化硅通量到海底的主要来源。然而，目前还没有关于通过水柱下沉的颗粒状有机物质数量的数据，这使得该地区的生产和出口之间的定量关系基本上没有确定。这项工作的初始阶段包括在大约、S纬度和东经73度处布置一个时间序列的泥沙捕集器系泊，以利用中国海洋研究所在过去十年中在该地区获得的历史数据集。将对每两周至每月一次的圈闭样本进行有机成分分析，并结合初级生产力观察提供可得出出口价值的基本数据。这项工作将与中华人民共和国国家海洋局中国和中国南极科考队合作开展。除了在南极补给船上提供时间外，国家海洋局还将赞助船上的初级生产力实验和辅助水文测量。合作的美国科学家将提供指导，使这些观测符合为全球海洋通量联合研究制定的标准，并为系泊沉积物捕集器提供硬件。美国和中国的调查人员将相互分享所有样本和数据集，数据分析将联合进行。***

*** 9726186 Pilskaln This proposed work is a study of the biological production and export flux of biogenic matter in response to ventilation of intermediate and deep water masses within the Polar Front zone. It is a collaborative work between the University of Maine and the Chinese Antarctic Research Expedition (CHINARE). The shipboard work is proposed for the Chinese antarctic resupply vessel off Prydz Bay in the Indian Ocean sector. In the austral Spring, this region experiences phytoplankton blooms that are thought to be the result of nutrient transport by the ventilation of intermediate and deep water masses. On an annual basis, it is believed that such blooms are the primary source of particulate organic carbon and biogenic silica flux to the ocean bottom. At this time however no data exists on the amount of particulate organic matter that sinks through the water column, leaving the quantitative relationships between production and export largely undefined in this region. The initial phase of the work consists of setting out a time-series sediment trap mooring at approximately 64 deg S latitude and 73 deg E longitude to take advantage of the historical data set that CHINARE has obtained in this area over the past decade. The biweekly to monthly trap samples will be analyzed for their organic constituents, and in conjunction with primary productivity observations will provide the basic data from which export values can be derived. This work will be carried out in collaboration with the State Oceanic Administration of the People's Republic of China, and the Chinese Antarctic Research Expedition. In addition to providing time on the antarctic resupply vessel, the SOA will sponsor the shipboard primary productivity experiments and the supporting hydrographic measurements. The collaborating American scientists will provide guidance in making these observations to standards developed for the Joint Global Ocean Flux Study, and provide the hardware for the moored sediment trap. There will be a mutual sharing between the U.S. and Chinese investigators of all samples and data sets, and the data analysis will be carried out jointly. ***