Operation of a National Ocean Sciences Accelerator Mass Spec

国家海洋科学加速器质谱仪的运行

• 批准号: 2244731
• 负责人: Susan Lang
• 金额: $ 640.26万
• 依托单位: Woods Hole Oceanographic Institution
• 依托单位国家: 美国
• 项目类别: Cooperative Agreement
• 财政年份: 2023
• 资助国家: 美国
• 起止时间: 2023-04-01 至 2028-03-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2244731&HistoricalAwards=false
• 关键词: Operation; National; Ocean; Sciences; Accelerator

The National Ocean Sciences Accelerator Mass Spectrometer (NOSAMS) was established to provide analyses of 14C at natural levels. NOSAMS plays an important role in the oceanographic community by generating high accuracy, high precision 14C data in a timely manner for seawater, groundwater, organic carbon (OC), carbonates, sediments, individual compounds, and other materials. The three-pronged mission of NOSAMS is to make high quality radiocarbon measurements accessible to the ocean sciences community, to continuously improve and develop new measurement capabilities, and to serve as an educational and outreach resource. NOSAMS provides significant training opportunities for early career scientists, and especially graduate students and post-doctoral fellows. Graduates are offered internships that will lead to experience gained from running their own samples, and publication of the results. Postdocs will be supported for 2-year terms through the award, as well as a WHOI postdoc at no cost to this award. The PIs plan to hold a series of one-day short courses every year at either OSM or AGU Fall meetings.NOSAMS is unique in offering comprehensive radiocarbon services and expertise to a diverse community of users. NOSAMS has provided data that is critical to understanding geophysical process in the earth's surface environment, for example past and present ocean circulation, and biogeochemical cycling of carbon. Water samples collected as part of two major NSF-funded experiments known as the Climate Variability and Predictability (CLIVAR) and Global Ocean Ship-based Hydrographic Investigations Program (GO-SHIP) have comprised a significant fraction of samples analyzed by NOSAMS to date. NOSAMS will continue to provide 14C analysis for the oceanographic community for the next five years and will continue to research new methods for 14C dating. Over the next five years NOSAMS plans to capitalize on the new capabilities of the recently installed MIni CArbon DAting System (MICADAS) and to streamline operations by increasing automation. The hybrid gas interfaces of the MICADAS offer new opportunities for rapid measurements, new procedures, and new sample types.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

国家海洋科学加速器质谱仪（NOSAMS）的建立是为了提供自然水平的14C分析。NOSAMS通过及时生成海水、地下水、有机碳（OC）、碳酸盐、沉积物、单个化合物等材料的高精度、高精度的14C数据，在海洋学界发挥着重要作用。NOSAMS的三管齐下的使命是为海洋科学界提供高质量的放射性碳测量，不断改进和发展新的测量能力，并作为教育和推广资源。NOSAMS为早期职业科学家，特别是研究生和博士后提供了重要的培训机会。毕业生将获得实习机会，通过运行自己的样本获得经验，并发表结果。博士后将通过该奖项获得为期2年的资助，并免费获得一名WHOI博士后。pi计划每年在OSM或AGU秋季会议上举办一系列为期一天的短期课程。NOSAMS在为不同的用户群体提供全面的放射性碳服务和专业知识方面是独一无二的。NOSAMS提供的数据对于理解地球表面环境中的地球物理过程至关重要，例如过去和现在的海洋环流，以及碳的生物地球化学循环。由美国国家科学基金会资助的两个主要实验——气候变化和可预测性（CLIVAR）和全球海洋船舶水文调查计划（GO-SHIP）——收集的水样构成了NOSAMS迄今分析的样品的很大一部分。NOSAMS将在未来五年内继续为海洋学界提供14C分析，并将继续研究14C测年的新方法。在接下来的五年里，NOSAMS计划利用最近安装的迷你碳测年系统（MICADAS）的新功能，并通过提高自动化来简化操作。MICADAS的混合气体接口为快速测量、新程序和新样品类型提供了新的机会。该奖项反映了美国国家科学基金会的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。