CAREER: The Transformation, Cross-shore Export, and along-shore Transport of Freshwater on Antarctic Shelves

高纬度大陆冰川保护区融化的淡水排放强烈地控制着盐的收支、环流和极地冰架产生的相关海洋水团的形成。它们在性质上不同于与河流沿岸输入有关的淡水输入。PI建议进行观测部署，以测量先前确定的沿海淡水驱动流--南极半岛沿岸流(APCC)的一个具体例子。这一职业项目的研究部分旨在增进对南极大陆周围淡水排放动态的了解。相关的研究问题涉及：一)对新鲜的、可浮的沿海洋流跨陆架和沿陆架扩散的控制；二)沿海分布的淡水水源的作用(与低纬地区典型的“点源”河流流出源相反)；以及三)这些沿海洋流对大陆架上的水团转化和热传递的贡献。教育事业方案的组成部分利用一系列实地经验和研究成果，包括数据、模型输出和理论，将极地科学带到课堂和普通公众，并培训新的极地科学家。这一组合战略将使研究人员能够为在特拉华大学作为研究人员和教师的成功学术生涯奠定基础。该项目还将提供培养博士生的机会。非正式的外展工作将包括在德莱瓦大学赞助的活动上进行公开演讲，包括吸引8-10000人参加的夏季活动--海岸日，以及利用现有的外展网络从外地远程授课。这项建议需要在南极进行实地考察。这项奖励反映了NSF的法定使命，并通过使用基金会的智力优势和更广泛的影响审查标准进行评估，被认为值得支持。

Freshwater discharges from melting high-latitude continental ice glacial reserves strongly control salt budgets, circulation and associated ocean water mass formation arising from polar ice shelves. These are different in nature than freshwater inputs associated with riverine coastal inputs. The PI proposes an observational deployment to measure a specific, previously-identified example of a coastal freshwater-driven current, the Antarctic Peninsula Coastal Current (APCC). The research component of this CAREER project aims to improve understanding of the dynamics of freshwater discharge around the Antarctic continent. Associated research questions pertain to the i) controls on the cross- and along-shelf spreading of fresh, buoyant coastal currents, ii) the role of distributed coastal freshwater sources (as opposed to 'point' source river outflow sources typical of lower latitudes), and iii) the contribution of these coastal currents to water mass transformation and heat transfer on the continental shelf. An educational CAREER program component leverages a series of field experiences and research outputs including data, model outputs, and theory, to bring polar science to the classroom and the general public, as well as training a new polar scientist. This combined strategy will allow the investigator to lay the foundation for a successful academic career as a researcher and teacher at the University of Delaware. The project will also provide the opportunity to train a PhD student. Informal outreach efforts will include giving public lectures at University of Deleware's sponsored events, including Coast Day, a summer event that attracts 8000-10000 people, and remote lectures from the field using an existing outreach network. This proposal requires fieldwork in the Antarctic.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.