U.S./Chinese Ship of Opportunity Sampling Program Phase II

美国/中国机会船采样计划第二阶段

• 批准号: 0230284
• 负责人: Xiaojun Yuan
• 金额: $ 51.59万
• 依托单位: Columbia University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-01-01 至 2008-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0230284&HistoricalAwards=false
• 关键词: U.S.; Chinese; Ship; Opportunity; Sampling

This work is the continuation of a joint project with the Polar Research Institute of China to make measurements of the structure of the upper ocean in the northern Weddell Sea along the route taken by the PRI's antarctic supply vessel, R/V Xue Long. The observations, obtained from expendable instruments, complement existing hydrographic observations along various transects through the northwestern Weddell Sea region and data from moored current meter arrays in the Weddell-Scotia confluence zone. This effort builds upon a successful series of expendable bathythermographs and conductivity-temperature-depth probes obtained by the science party on board the R/V Xue Long for the past four years.The west-to-east transit of the Weddell Sea by the ship makes it possible to obtain a series of ocean soundings that are otherwise unobtainable. The information is particularly important because strong correlative links between the upper ocean temperature and salinity, the sea ice edge, and extra-polar climate features have been established. It has been shown that the Indian Ocean sector is an anomalous region with respect to connections between antarctic and lower latitude climatic features and indices. Here the Antarctic Circumpolar Current makes its closest approach to the continent and the Antarctic Circumpolar Wave is least well expressed in the existing data. The necessary instrumentation, both software and hardware, has been installed in the ship and an excellent working relationship with Chinese antarctic scientists has been developed.

这项工作是与中国极地研究所的一个联合项目的继续，该项目沿着PRI南极补给船“雪龙号”所走的路线测量威德尔海北部上层海洋的结构。从消耗性仪器获得的观测结果，补充了威德尔海西北部不同横断面上现有的水文观测结果，以及威德尔-斯科舍汇合带系泊流计阵列的数据。这一努力建立在科学小组在过去四年中在“雪龙号”上成功获得的一系列消耗性深海温度仪和电导率-温度-深度探测器的基础上。这艘船从西向东穿越威德尔海，这使得它有可能获得一系列海洋探测数据，否则这些数据是无法获得的。这些信息特别重要，因为已经建立了上层海洋温度和盐度、海冰边缘和极外气候特征之间的密切相关关系。已经表明，就南极和低纬度气候特征和指数之间的联系而言，印度洋扇区是一个异常区域。南极环极流在这里离大陆最近，而南极环极波在现有资料中表现得最差。船上安装了必要的仪器，包括软件和硬件，并与中国南极科学家建立了良好的工作关系。