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

南大洋印度洋海域 POC 生产和出口：中美合作研究项目

• 批准号: 9726186
• 负责人: Cynthia Pilskaln
• 金额: $ 51.39万
• 依托单位: University of Maine
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-06-15 至 2001-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9726186&HistoricalAwards=false
• 关键词: POC; Production; Export; Indian; Ocean

*** 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. ***

*** 9726186 Pilskaln 这项拟议工作是对极锋区内中层和深水团通风响应的生物生产和生物物质输出通量的研究。 这是缅因大学和中国南极科考队（CHINARE）的合作成果。 船上工作拟在印度洋海域普里兹湾附近的中国南极补给船进行。 在南半球春季，该地区浮​​游植物大量繁殖，这被认为是中层和深层水团通风输送养分的结果。 每年，人们相信这种水华是颗粒有机碳和生物二氧化硅流入海底的主要来源。 然而，目前尚无关于通过水体下沉的颗粒有机物数量的数据，因此该地区的生产和出口之间的定量关系在很大程度上尚不明确。 该工作的初始阶段包括在南纬 64 度和东经 73 度左右设置一个时间序列沉积物陷阱系泊设施，以利用 CHINARE 过去十年在该地区获得的历史数据集。 将分析每两周一次到每月一次的陷阱样品的有机成分，并结合初级生产力观测结果提供导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初级生产力实验和支持的水文测量。 合作的美国科学家将提供指导，使这些观测达到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。 美国和中国研究人员将相互共享所有样本和数据集，并联合进行数据分析。 ***