RAPID: US Geotraces N. Atlantic: Measuring the 13C-DIC distribution and quantifying the impact of organic matter export on 13C, nutrients and biologically active trace metals

RAPID：美国 Geotraces N. Atlantic：测量 13C-DIC 分布并量化有机物输出对 13C、营养物和生物活性微量金属的影响

• 批准号: 1137455
• 负责人: Paul Quay
• 金额: $ 2.83万
• 依托单位: University of Washington
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-07-01 至 2013-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1137455&HistoricalAwards=false
• 关键词: RAPID; US; Geotraces; N.; Atlantic

With funding through a Grant for Rapid Response Research (RAPID), a research team at the University of Washington will participate in an originally unplanned oceanographic cruise in autumn 2011, as part of the U.S. GEOTRACES North Atlantic campaign to study carbon and oxygen isotopic signatures in the oceanic water column. The original, incomplete cruise (in autumn 2010) was terminated prematurely because of failure of the ship's propulsion system. The forthcoming follow-up cruise in 2011 will follow a track between Woods Hole, MA and Cape Verde Islands. These RAPID funds are being will cover only the costs of preparing for sample collection during the future cruise and not for laboratory analysis of the seawater samples or synthesis of the data. This team, originally supported through an ARRA award, will measure the same seawater characteristics on the future cruise as was proposed for the original cruise -- that is, the 13C/12C of dissolved inorganic carbon and the concentration of dissolved O2 and Ar gases. The scientific objectives have not changed; namely, they will quantify the rate of organic matter (OM) export using two separate methods that rely on the measured air-sea disequilibrium for del-13C and for dissolved O2 gas. The team will also determine the impact that OM export and its subsequent remineralization on the relationship between bioactive trace elements (BTE), del-13C-DIC and nutrient relationships in surface waters and at depth.Broader Impacts: Because these ocean carbon system data will become part of a multi-investigator international study, they will be made available to a worldwide community involved in the study of ocean chemistry and its relationship to global climatic change. Project results will also be incorporated into the principal investigator's teaching curricula, and the project itself will make provision for the participation of idergraduate students in the laboratory analytical work.

通过快速反应研究赠款（RAPID）的资助，华盛顿大学的一个研究小组将参加2011年秋季的一次最初计划外的海洋学巡航，作为美国GEOTRACES北大西洋运动的一部分，以研究海洋水柱中的碳和氧同位素特征。 最初的未完成巡航（2010年秋季）因船舶推进系统故障而提前终止。 即将于2011年进行的后续航行将沿着马萨诸塞州伍兹霍尔和佛得角群岛之间的轨道进行。 这些快速发展方案资金将仅用于支付今后航行期间准备样本采集的费用，而不用于海水样本的实验室分析或数据综合。该小组最初通过ARRA奖获得支持，将在未来的巡航中测量与最初巡航相同的海水特性-即溶解无机碳的13 C/12 C以及溶解O2和Ar气体的浓度。 科学目标没有改变;即，他们将使用两种不同的方法量化有机物（OM）输出率，这两种方法依赖于测量的del-13 C和溶解O2气体的海气不平衡。 研究小组还将确定有机质输出及其随后的再矿化对生物活性微量元素（BTE）、del-13 C-DIC和表层沃茨和深层营养物关系的影响。因为这些海洋碳系统数据将成为多研究者国际研究的一部分，将向参与海洋化学及其与全球气候变化关系研究的全世界各界提供这些资料。 项目成果也将纳入主要研究员的教学课程，项目本身将为研究生参与实验室分析工作作出规定。