Energetics of Estuarine and Coastal Flow

河口和沿岸流的能量学

• 批准号: 0849622
• 负责人: Parker MacCready
• 金额: $ 46.36万
• 依托单位: University of Washington
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-06-01 至 2014-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0849622&HistoricalAwards=false
• 关键词: Energetics; Estuarine; Coastal; Flow

This project will conduct a number of theoretical and numerical analyses of coastal and estuarine circulation focused on the mechanical energy budget. Mechanical energy (potential and kinetic) forms a powerful conceptual integrating tool between atmospheric, tidal, and river forcing of coastal flows, and the resulting vertical fluxes (both by overturning circulation and by turbulent mixing). However, our current understanding of the functioning of the energy budget is severely limited in coastal and estuarine flows by the combined effects of irregular domains, open boundaries, and highly variable forcing (and hence the lack of a steady state). The work will build on the PI's recent work on energy budgets in estuaries and on the Washington and Oregon continental shelf. This will lead to a greatly improved theoretical understanding of how coastal upwelling and the estuarine exchange flow work, and how sensitive they may be to changes in forcing conditions. Simulations will be done in both idealized domains and for realistic hindcasts of the WA/OR shelf including the Columbia River and Puget Sound. Broader Impacts: The results of this work will be of benefit to the coastal and estuarine physics community by providing (i) a better theoretical understanding of energy budgets, and (ii) improved numerical tools to use with ROMS for energy analysis. The research will also increase our understanding of coastal upwelling, and of the linkages between shelf and estuarine systems, and hence the ecosystems which rely on these. This work will train a new graduate student in coastal and estuarine physical oceanography. It will support computational infrastructure that is used by many students at the UW School of Oceanography as a critical aspect of their research. It will also support a 5-week summer school.

该项目将对海岸和河口环流进行一些理论和数值分析，重点是机械能收支。机械能(势能和动能)在沿海气流的大气、潮汐和河流强迫以及由此产生的垂直通量(通过颠覆环流和湍流混合)之间形成了一个强大的概念集成工具。然而，我们目前对能量收支功能的了解在沿海和河口水流中受到不规则区域、开放边界和高度可变的强迫(因此缺乏稳定状态)的综合影响。这项工作将建立在PI最近在河口以及华盛顿和俄勒冈大陆架上的能源预算工作的基础上。这将大大提高对海岸上升流和河口交换流如何工作的理论理解，以及它们对强迫条件变化的敏感度。模拟将在理想化的领域内进行，并对包括哥伦比亚河和普吉特湾在内的Wa/OR陆架的真实后遗症进行模拟。更广泛的影响：这项工作的结果将有利于沿海和河口物理学界：(I)更好地从理论上了解能源收支，(Ii)改进用于ROMS进行能源分析的数值工具。这项研究还将增加我们对沿海上升流以及陆架和河口系统之间的联系，以及依赖这些系统的生态系统的了解。这项工作将培养一名新的海岸和河口物理海洋学研究生。它将支持被华盛顿大学海洋学院的许多学生用作其研究的关键方面的计算基础设施。它还将支持为期5周的暑期学校。