MRI: Development of Instrumentation to Control Seawater Composition for Ocean Acidification Research

MRI：开发用于海洋酸化研究的控制海水成分的仪器

• 批准号: 1039930
• 负责人: Andrew Dickson
• 金额: $ 20.99万
• 依托单位: University of California-San Diego Scripps Inst of Oceanography
• 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: 2011-01-01 至 2016-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1039930&HistoricalAwards=false
• 关键词: MRI; Development; Instrumentation; Control; Seawater

The PI requests MRI funding to develop an instrument that is capable of providing a high degree of control over the temperature, the CO2 levels, and the oxygen levels in seawater that is being used to grow organisms for ocean acidification experiments. Furthermore, the proposed system will be able to vary these parameters dynamically, allowing investigators not only to study perturbed steady-state conditions, but also to control the variability of these parameters so as to be able to mimic natural conditions more closely.Broader ImpactsThe broader impacts of this work are very great. As documented in the proposal there are numerous top-quality scientists that already signed up to use this system in their work. These folks can now focus on their biological experimentation with the assurance that the marine chemistry of the experimental system is properly controlled and described. A lot of very important results in many fields (phytoplankton, benthic inverts, pelagics, etc.) are likely to come out of this system. The proposal also entrains undergraduates in the design process of the aquarium system via a capstone engineering design course and through summer internships, and will likely involve a graduate student throughout its development. Undergraduate students will be involved in the design and testing of various components, particularly the gas mixing systems and/or the gas equilibration system using membrane contactors. This will be done at no cost to the proposal by integrating the design of some of the components into a 2-quarter undergraduate Mechanical Engineering capstone design course and by involving summer interns through the Marine Physical Laboratory Intern Program. Publication of the design and specifications of the proposed instrumentation in a peer-reviewed journal is a very strong component of the proposal.

PI要求MRI资金开发一种能够对温度，二氧化碳水平和海水中的氧气水平提供高度控制的仪器，用于生长有机体进行海洋酸化实验。此外，所提出的系统将能够动态地改变这些参数，使研究人员不仅可以研究受干扰的稳态条件，而且可以控制这些参数的可变性，从而能够更加紧密地模仿自然条件。对这项工作的更广泛的影响非常好。正如提案中所记录的那样，已经有许多高质量的科学家在其工作中注册了该系统。这些人现在可以通过保证实验系统的海洋化学得到适当控制和描述的保证。在许多领域（浮游植物，底栖动物，上层等）中，许多非常重要的结果可能会从该系统中出现。该提案还通过顶峰工程设计课程和暑期实习，在水族馆系统的设计过程中吸引了本科生，并且在整个发展过程中可能会涉及研究生。本科生将参与各种组件的设计和测试，尤其是使用膜接触器的气体混合系统和/或气体平衡系统。通过将某些组件的设计集成到四分之一的本科机械工程顶峰设计课程中，并通过海上物理实验室实习计划参与暑期实习生，这将无需对该提案进行。在同行评审期刊上发布了拟议仪器的设计和规格是该提案的非常有力的组成部分。