Collaborative Research: Robust optode-based eddy correlation systems for oxygen flux measurements in aquatic environments

合作研究：用于水生环境中氧通量测量的稳健的基于光极的涡流相关系统

• 批准号: 1334848
• 负责人: Peter Berg
• 金额: $ 49.09万
• 依托单位: University of Virginia Main Campus
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2014
• 资助国家: 美国
• 起止时间: 2014-03-01 至 2019-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1334848&HistoricalAwards=false
• 关键词: Collaborative; Research; Robust; optode; based

The PIs request funding to build and test robust eddy correlation instruments for unidirectional and oscillating flow environments based on sturdy fiber- and planar-optical sensors and novel signal-processing electronics. The new hardware will be supported by software development to correct potential flux underestimations caused by inadequate oxygen sensor response time and spatial offsets between oxygen and flow sensors. The fragility of the thin glass microelectrode used in aquatic eddy correlation instruments severely limits the use of this powerful technique for flux measurements in benthic environments. This problem represents the major bottleneck preventing the widespread use of this approach. Broader Impacts: The PIs have very strong records both in spreading the use of EC technology through the community and in graduate and undergraduate education. They outline clearly the ways in which they will continue their ongoing endeavors in both areas. In addition, the application of this technology to the geochemistry and ecology of shallow-water regions has broad implications for carbon cycling and ocean acidification studies, both of which have important societal ramifications. Better quantify oxygen fluxes in the aquatic environment is important for society. It can e.g. help predict when and if the health of an aquatic system is being weakened, and when e.g. hypoxia or anoxia is approaching. Anoxia leads to death of all higher life

PI 请求资金来构建和测试基于坚固的光纤和平面光学传感器以及新颖的信号处理电子设备的强大的涡流相关仪器，用于单向和振荡流环境。新硬件将得到软件开发的支持，以纠正由于氧气传感器响应时间不足以及氧气和流量传感器之间的空间偏移而导致的潜在流量低估。水生涡流相关仪器中使用的薄玻璃微电极的脆弱性严重限制了这种强大技术在底栖环境中通量测量的使用。这个问题是阻碍这种方法广泛使用的主要瓶颈。更广泛的影响：PI 在社区推广 EC 技术的使用以及研究生和本科生教育方面都拥有非常出色的记录。他们清楚地概述了他们将继续在这两个领域持续努力的方式。此外，该技术在浅水区域的地球化学和生态学中的应用对碳循环和海洋酸化研究具有广泛的影响，这两者都具有重要的社会影响。更好地量化水生环境中的氧气通量对社会很重要。它可以例如帮助预测水生系统的健康状况何时以及是否会被削弱，以及何时例如。缺氧或缺氧即将来临。缺氧导致所有高等生命死亡