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

该奖项为为期两年的博士后奖学金提供资金。她获得了麻省理工学院化学工程学博士学位。土木工程与环境工程系。赞助科学家和主办机构是吉姆·默里博士(华盛顿大学)和约翰·克鲁修斯博士(美国地质调查局西雅图分校)。她将为她的研究员进行的研究重点是探索沿海海洋铁(Fe)循环的驱动因素，以及开发一种新的仪器，以改进海洋中铁的采样。海洋覆盖了地球表面的70%以上，占每年初级生产力的近50%，但与陆地生态系统相比，对这些生态系统的研究仍然严重不足。值得注意的是，铁等可能对推动(或限制)海洋初级生产力至关重要的微量营养物质仍然只有很少的样本。现有的数据表明，铁的浓度在近海和沿海地区是高度可变和季节性的，特别是在上升流/下降流循环可能特别重要的沿海地区。PI将探索沿海上升流和低氧事件可能在多大程度上推动从沉积物向上覆水域供应铁，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，这将使铁(和其他金属和营养物质)的数据密度相对于现有解决方案提高十倍或更多。PI将开发一个系统，通过一种新型的痕量金属清洁采样器自动收集样品，用于对系泊设备进行剖面分析。在近岸验证地点(约6个月，ORCA，Puget Sound)部署后，将在具有科学意义的沿海陆架地点进行为期12个月的采样。理想情况下，这一部署将在OOI耐力阵列新港线进行，那里的水柱剖面仪计划安装在25-800米的不同深度。国际学生联合会还将参与两项教育倡议，这两项倡议都涉及科学项目中代表性不足的学生。她将通过Project Cool为西雅图地区的中学生担任科学导师，并将指导参加华盛顿大学和伍兹霍尔实习项目的本科生。

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.