OCE-PRF Track 1 (Broadening Participation): Examining the role of anoxic events on coastal micronutrient (Fe) supplies from a novel high-resolution profiling sampler

OCE-PRF 轨道 1（扩大参与）：通过新型高分辨率分析采样器检查缺氧事件对沿海微量营养素 (Fe) 供应的作用

• 批准号: 1421025
• 负责人: Amy Mueller
• 金额: $ 17.4万
• 依托单位: Mueller Amy
• 依托单位国家: 美国
• 项目类别: Fellowship Award
• 财政年份: 2015
• 资助国家: 美国
• 起止时间: 2015-02-01 至 2017-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1421025&HistoricalAwards=false
• 关键词: OCE; PRF; Track; Broadening; Participation

This award provides funding for a two-year Postdoctoral Fellowship. The PI received her PhD in chemical engineering from Massachusetts Institute of Technology's Dept. of Civil and Environmental Engineering. The sponsoring scientists and host institutions are Dr. Jim Murray (University of Washington) and Dr. John Crusius (USGS - Seattle). The research she will conduct for her Fellowship is focused on the exploration of what is driving iron (Fe) cycles in the coastal oceans and on the development of a new instrument that will improve the sampling of iron in the ocean. Oceans cover over 70% of the earth surface and are responsible for nearly 50% of annual primary productivity, yet these ecosystems remain significantly understudied relative to their terrestrial counterparts. Notably, trace nutrients such as iron which may be critical in driving (or limiting) primary productivity in the ocean remain only sparsely sampled. What data are available indicate that iron concentrations are highly variable and seasonally dependent offshore and especially in coastal areas where upwelling/downwelling cycles may be particularly important.The PI will explore the extent to which coastal upwelling and hypoxia events may drive supply of Fe to overlying waters from sediments and will develop a methodology for automated high-frequency trace-metal clean sampling at ocean moorings which stands to improve data density for iron (and other metals and nutrients) by a factor of ten or more relative to existing solutions. The PI will develop a system for automated collection of samples via a novel trace-metal clean sampler for use at profiling moorings. Deployments at a near-shore validation site (~6 months, ORCA, Puget Sound) will be followed by sampling for 12 months at a scientifically relevant coastal shelf site. Ideally, this deployment will take place at the OOI Endurance Array Newport Line, where water column profilers are scheduled to be installed at various depths from 25-800m. The PI will also participate in two educational initiatives, both of which involve underrepresented students in science projects. She will act as a science mentor for middle school students in the Seattle area via Project COOL, and she will mentor undergraduates who are participating in the University of Washington and Woods Hole internship programs.

该奖项为为期两年的博士后奖学金提供资金。主要研究者在马萨诸塞州理工学院化学工程系获得博士学位。土木与环境工程系赞助科学家和主办机构是Jim Murray博士（华盛顿大学）和John Crusius博士（美国地质勘探局-西雅图）。她将为她的奖学金进行的研究重点是探索是什么驱动铁（Fe）循环在沿海海洋和开发一种新的仪器，将改善铁在海洋中的采样。海洋覆盖了地球表面的70%以上，并负责近50%的年度初级生产力，但这些生态系统相对于陆地生态系统而言，仍然存在严重的研究不足。值得注意的是，微量营养素，如铁，可能是关键的驱动（或限制）在海洋中的初级生产力仍然只有稀疏的采样。现有的数据表明，铁浓度变化很大，且随季节变化而变化，尤其是在上升流/下降流循环可能特别重要的沿海地区。PI将探索沿海上升流和缺氧事件可能在多大程度上推动沉积物向上覆沃茨供应铁，并将开发一种自动高频跟踪方法。在海洋系泊处进行金属清洁采样，相对于现有解决方案，该解决方案将铁（以及其他金属和营养物）的数据密度提高了十倍或更多倍。PI将开发一个系统，通过一个新的痕量金属清洁取样器自动收集样品，用于剖面系泊。在近岸验证地点部署（约6个月，ORCA，普吉特湾）后，将在科学相关的沿海大陆架地点取样12个月。理想情况下，该部署将在OOI Endurance Array纽波特线进行，计划在25- 800米的不同深度安装水柱剖面仪。PI还将参与两项教育计划，这两项计划都涉及科学项目中代表性不足的学生。她将通过“酷项目”担任西雅图地区中学生的科学导师，她还将指导参加华盛顿大学和伍兹霍尔实习项目的本科生。