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。该 PI 获得了麻省理工学院土木与环境工程系的化学工程博士学位。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）。她将为奖学金进行的研究重点是探索沿海海洋中铁（Fe）循环的驱动因素，以及开发一种新仪器以改善海洋中铁的采样。海洋覆盖了地球表面 70% 以上，占年度初级生产力的近 50%，但与陆地生态系统相比，这些生态系统的研究仍然严重不足。值得注意的是，铁等微量营养物质对于推动（或限制）海洋初级生产力至关重要，但采样仍然很少。现有数据表明，近海铁浓度变化很大，并且随季节变化，特别是在上升流/下降流循环可能特别重要的沿海地区。PI 将探讨沿海上升流和缺氧事件可能在多大程度上推动上覆铁供应并将开发一种在海洋系泊处自动高频痕量金属清洁采样的方法，相对于现有解决方案，该方法将提高铁（以及其他金属和营养物）的数据密度十倍或更多。 PI 将开发一种通过新型微量金属清洁采样器自动收集样本的系统，用于分析系泊。在近岸验证站点（约 6 个月，ORCA，普吉特海湾）部署后，将在科学相关的沿海陆架站点进行为期 12 个月的采样。理想情况下，此部署将在 OOI Endurance Array Newport Line 进行，计划在 25-800 m 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 Project COOL 担任西雅图地区中学生的科学导师，并将指导参加华盛顿大学和伍兹霍尔实习项目的本科生。