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U.S.-France Cooperative Research: Processes Governing Air-Sea Transfer and Oceanic Cycling of Atmospheric Trace Elements

美法合作研究：大气微量元素的海空转移和海洋循环控制过程

基本信息

批准号：
9217495
负责人：
Thomas Church
金额：
$ 1.15万
依托单位：
University of Delaware
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
1993
资助国家：
美国
起止时间：
1993-04-15 至 1997-09-30
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=9217495&HistoricalAwards=false
关键词：
U.S.France Cooperative Research Processes

项目摘要

This two-year award supports U.S.-France cooperative research in atmospheric chemistry between Thomas M. Church of the University of Delaware and Alain Veron of the University of Aix-Marseille III. The collaboration focuses on a problem of common concern; that is, the delivery of atmospheric pollution from both North American and the European continents to the North Atlantic Ocean. The investigators will study the processes governing air-sea transfer and oceanic cycling of atmospheric trace elements. Sampling will occur on two joint international cruises for aerosol, precipitation, fog and sea water samples. The samples will be then be analyzed for trace metals, stable isotopes and radionuclides which are identifiers of continental sources and atmospheric transports to the sea. These atmospheric elements and their isotopes are useful for tracing oceanic circulation and biogeochemical cycling. The U.S. side will prepare and organize the ocean going sampling equipment. The atmospheric and oceanic samples will be analyzed jointly in a newly established French clean laboratory and at existing U.S. laboratories in Delaware and California. The U.S. investigator brings to this collaboration expertise in analysis of stable elements and radionuclide isotopes. This is complemented by unique atmospheric trace elements developed by the French investigator. The results will advance our knowledge of continental origins of air pollutants and their deposition in the North Atlantic Ocean.

这个为期两年的奖项支持美国-法国合作研究在大气化学中，托马斯M.教堂美国特拉华州大学的阿兰·贝隆和艾克斯-马赛三世合作的重点是一个问题共同关注的问题，即大气污染的交付从北美和欧洲大陆到北大西洋。调查人员将研究控制海气输送和海洋大气循环微量元素采样将在两个联合国际进行气溶胶、降水、雾和海水样品的巡航。的然后将分析样品中的微量金属、稳定同位素和放射性核素，它们是大陆源的标识符，通过大气输送到海洋。这些大气元素它们的同位素可用于追踪海洋环流，地球化学循环美方将准备和组织远洋航行取样设备大气和海洋样本将在新成立的法国洁净实验室进行联合分析以及位于特拉华州和加州的现有美国实验室。美国调查员为这一合作带来了以下方面的专业知识：稳定元素和放射性核素同位素分析。这是辅以独特的大气微量元素法国调查员。结果将推动我们的了解空气污染物的大陆起源及其沉积在北大西洋。