Modeling Estuary-Shelf Coupled Subtidal Circulation

模拟河口-陆架耦合潮下环流

• 批准号: 8711299
• 负责人: Richard Garvine
• 金额: $ 35.1万
• 依托单位: University of Delaware
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1987
• 资助国家: 美国
• 起止时间: 1987-07-01 至 1991-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8711299&HistoricalAwards=false
• 关键词: Modeling; Estuary; Shelf; Coupled; Subtidal

This study will continue modeling studies of coupled estuary-shelf subtidal frequency circulation, both density-and wind driven. Five particular objectives are posed: 1. A critical evaluation of plume models developed during previous work in comparison with observations of the Chesapeake plume obtained during the MECCAS program; 2. development of a simplified version of the estuary plume model that can be used to model plumes in ambient, inner shelf waters that have more complicated dynamics than the uniform longshore current how assumed; 3. Improvement of the existing steady-state plume model to include the effects of interfacial friction, mass entrainment, and buoyancy loss by vertical mixing beneath the plume; 4. Development of diagnostic models of density- and wind driven shelf circulation offshore of a major estuary; and, 5. Use of the results of the fourth for the inner shelf circulation description of estuary plume model of the second to provide a description of estuary plume dynamics on the inner continental shelf to include all major physical mechanisms for both the density and the wind-driven parts.

这项研究将继续对由密度和风驱动的河口-陆架潮下频率环流耦合进行建模研究。 提出了五个具体目标： 1. 与 MECCAS 计划期间获得的切萨皮克羽流观测结果进行比较，对先前工作中开发的羽流模型进行严格评估； 2. 开发河口羽流模型的简化版本，该模型可用于模拟环境内陆架水域中的羽流，这些水域的动力学比假设的均匀沿岸流更复杂； 3. 改进现有的稳态羽流模型，纳入界面摩擦、质量夹带以及羽流下方垂直混合造成的浮力损失的影响； 4. 主要河口近海密度和风驱动陆架环流诊断模型的开发； 5. 将第四个结果用于第二个河口羽流模型的内陆架环流描述，以提供对内大陆架河口羽流动力学的描述，包括密度和风的所有主要物理机制- 驱动部件。