Collaborative Research: GEOTRACES N Atlantic Section, shipboard and shorebased determination of key trace elements

合作研究：GEOTRACES 北大西洋剖面、船上和岸上关键微量元素的测定

• 批准号: 0928741
• 负责人: Christopher Measures
• 金额: $ 20.03万
• 依托单位: University of Hawaii
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-12-01 至 2012-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0928741&HistoricalAwards=false
• 关键词: Collaborative; Research; GEOTRACES; Atlantic; Section

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5).The international GEOTRACES program has been developed to produce a global framework of key trace elements and isotopes that will describe the contemporary distributions of these properties in the ocean. This information can then be used to constrain models of the processes and fluxes of biogeochemically important elements and key tracers that frame flux processes and transformations. Scientists from the University of Hawaii and the University of Miami Rosenstiel School of Marine and Atmospheric Science will participate in the first GEOTRACES cruise to the North Atlantic and determine on board ship dissolved iron, aluminum, manganese, and zinc concentrations using Flow Injection Analysis. These on-board analyses would enable them to identify and rectify any sampling equipment problems and/or adapt the sampling strategy for unexpected features in the water column. In the laboratory, the samples would be reanalyzed for these elements as well as Cd by inductively coupled plasma mass spectrometry to calibrate the shipboard data sets, fill in gaps in the shipboard analyses, and provide quality control on the accuracy/precision of the measurements. Determining the concentrations of these elements should significantly improve our knowledge of how global ocean biogeochemical cycles operate, allow for a more accurate prediction of the role of the atmosphere in providing biogeochemically important trace elements to the surface ocean, and the mechanisms by which they are transferred to the interior of the ocean. This research will also provide an understanding of the sensitivity of trace element distributions to changing environmental conditions. One postdoc from the University of Hawaii and one graduate student from Rosenstiel School of Marine and Atmospheric Sciences would be supported and trained as part of this project. It is anticipated the postdoc and the graduate student would participate in the multi-institutional, multi-disciplinary GEOTRACES cruise in the North Atlantic.

该奖项是根据2009年的《美国复苏与再投资法》（公法111-5）资助的。国际地理计划的计划已开发出来，以生成全球关键痕量元素和同位素的框架，这些框架将描述这些物业在海洋中的当代分布。然后，这些信息可用于约束生物地球化学上重要元素的过程和通量的模型，以及构架通量过程和转换的关键示踪剂。 夏威夷大学和迈阿密罗森斯特大学海洋与大气科学学院的科学家将参加北大西洋的第一个地理位置巡游，并确定使用流量注射分析的船上船舶溶解铁，铝，锰和锌浓度。 这些机上分析将使他们能够识别和纠正任何采样设备问题和/或调整抽样策略，以获取水柱中意外特征的采样策略。 在实验室中，将通过电感耦合的等离子体质谱法对这些元素以及CD进行重新分析，以校准船上数据集，填补船舶分析中的空白，并对测量值的准确性/精度提供质量控制。 确定这些元素的浓度应显着提高我们对全球海洋生物地球化学周期如何运作的了解，从而更准确地预测大气在向地表海提供生物地球化学上重要的痕量元素以及它们转移到海洋内部的机制。 这项研究还将提供对痕量要素分布对不断变化的环境条件的敏感性的理解。 夏威夷大学的一个博士后，一名来自Rosenstiel海洋和大气科学学院的研究生将得到支持和培训，作为该项目的一部分。 预计博士后和研究生将参加北大西洋的多机构，多学科的地理位置巡游。