Collaborative Research: Analytical Techniques and Software: Development of CyberInfrastructure to Support Laser-Ablation ICP Mass Spectrometry

合作研究：分析技术和软件：开发支持激光烧蚀 ICP 质谱分析的网络基础设施

• 批准号: 0930173
• 负责人: James Walker
• 金额: $ 8.91万
• 依托单位: University of Kansas Center for Research Inc
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-06-01 至 2013-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0930173&HistoricalAwards=false
• 关键词: Collaborative; Research; Analytical; Techniques; Software

U-Pb laser ablation geochronology has become the most commonly applied tool for dating zircons. Despite the widespread application of this tool to a host of geological problems, there is little consensus with regard to analytical strategies and data reduction protocols. The result is inter-laboratory bias and both under- and over-estimation of errors on calculated dates. This limits our ability to compare results from different labs and limits rigorous compilations from databases such as EarthChem. This project will remedy this situation by developing cyber infrastructure tools in support of Laser-Ablation ICP-Mass Spectrometry (LA-ICP-MS). The project will develop open-source, free, software in consultation with the international community to treat with statistical rigor all aspects of data reduction, from calculation of ratios to correction for interferences and drift. Our approach will follow that used in developing similar software as part of the EARTHTIME project and requires the integration of the fields of software engineering and geochemistry. The resulting software will eliminate large sources of interlaboratory bias and serve as a teaching tool showing clearly how raw ratios are converted into dates and uncertainties.Creating the software for connecting the LA-ICP-MS community with the developing EarthChem database for geochronology and thermochronology will provide the integration of data from this important technique into the larger data structure of geochemistry and geology. These data will play an important role in far-ranging fields such as understanding the growth of continents, chronology of evolutionary changes, timing of early hominid evolution, and linkages between climate and tectonics. During all phases of the planned work, we will involve a broad cross section of the community from undergraduates to post-doctoral scientists to help develop the next generation of analysts and software engineers. In particular, the systematic evolution of the collaboration between software engineers and earth scientists will be advanced as it produces robust and reliable workflow tools.

U-PB激光消融量已经成为约会锆石的最常用工具。尽管该工具广泛应用于许多地质问题，但在分析策略和减少数据方案方面几乎没有共识。结果是实验室间偏差，并且在计算日期的错误估计和过度估计。这限制了我们比较不同实验室结果的能力，并限制了来自Earthchem等数据库的严格汇编。该项目将通过开发网络基础架构工具来纠正这种情况，以支持激光燃烧ICP-MAS光谱法（LA-ICP-MS）。该项目将与国际社会协商开发开源，免费的软件，以统计严格的数据减少的所有方面，从计算到比率到干扰和漂移的纠正。我们的方法将遵循开发类似软件作为Earthtime项目的一部分的方法，并且需要整合软件工程和地球化学领域。所得的软件将消除大量的介质偏见来源，并作为一种教学工具清楚地表明如何将原始比率转化为日期和不确定性。为将LA-ICP-MS社区与开发的EarthChem数据库连接起来的地球人群学和热量人工学将将数据集成到较大的数据结构中的数据整合到地球构造和地理学中。这些数据将在较远的领域中发挥重要作用，例如了解大陆的增长，进化变化的年代学，早期人类进化的时机以及气候与构造之间的联系。在计划中的所有阶段，我们将涉及社区的一个广阔的横截面，从本科生到博士后科学家，以帮助发展下一代分析师和软件工程师。尤其是，软件工程师与地球科学家之间的协作的系统演变将是提前的，因为它会产生强大而可靠的工作流程工具。