Lagrangian studies of the transport, transformation, and biological impact of nutrients and contaminant metals in an estuarine plume: A process study in an operational ocean observ

关于河口羽流中营养物和污染物金属的传输、转化和生物影响的拉格朗日研究：海洋观测中的过程研究

• 批准号: 0238653
• 负责人: Meng Zhou
• 金额: $ 42.68万
• 依托单位: University of Massachusetts Boston
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-03-01 至 2009-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0238653&HistoricalAwards=false
• 关键词: Lagrangian; studies; transport; transformation; biological

P.I. Chant, Robert (Rutgers) Proposal #: 0238957Proposal Title: COLLABORATIVE RESEARCH: Lagrangian studies of the transport, transformation, and biological impact of nutrients and contaminant metals in a buoyant plume Project Summary The PIs propose a coordinated program of field and numerical experiments to examine processes that control the fate and transport of nutrients and chemical contaminants in the Hudson River plume. Urban estuarine plumes such as this one represent a major pathway for the transport of nutrients and chemical contaminants to the coastal ocean. The fates and transports of this material are controlled not only by the plume dynamics but also by biological and chemical processes coupled to the dynamics of the plume. To investigate these processes, the PIs propose to conduct a series of dye experiments along with continuous underway chemical and biological sampling using a towed vehicle. These experiments will occur within the framework of the LEO-15 Observatory to enable interpretation of the dye study by placing the Lagrangian surveys in context with shelf-wide observations from satellite imagery, surface currents and far-field subsurface hydrography. LEO-15 will be augmented by a cross shelf array of moored instruments to provide detailed estimates of subtidal circulation, stratification and Reynold stresses. In addition, data-assimilative numerical simulations will provide high resolution and realistic hindcasts of the coastal ocean during the field experiments. The modeling will assimilate the dye-tracer data into a 3-D coastal circulation model and guide future efforts to assimilate other tracers into circulation models with complex sources and sinks. The major aims of this work are to distinguish between physical processes that transport/mix material in a buoyant plume from biological and chemical transformation processes as well as the quantification of biological and chemical interactions in a Lagrangian perspective to provide a means to assess their importance in determining the fate and transport of nutrients and chemical contaminants in a buoyant plume. The proposed experimental plan will contrast the response of physical, biological, and chemical processes in the Hudson plume during upwelling and downwelling conditions. A major outcome of this work will be the determination of the extent and biological impact of contaminants in the plume along the New Jersey coast and Middle Atlantic Bight and will improve the ability to predict the fate and transport of contaminants and the rate that they enter the base of the food chain in the coastal ocean.

P.I. Chant, Robert（罗格斯大学）提案编号：0238957 提案标题：合作研究：浮力羽流中养分和污染物金属的传输、转化和生物影响的拉格朗日研究 项目摘要 PI 提出了一个协调的现场和数值实验计划，以检查控制哈德逊河羽流中养分和化学污染物的命运和传输的过程。像这样的城市河口羽流是营养物质和化学污染物向沿海海洋输送的主要途径。这种物质的命运和运输不仅受到羽流动力学的控制，还受到与羽流动力学耦合的生物和化学过程的控制。为了研究这些过程，PI 建议进行一系列染料实验，并使用牵引车进行连续的化学和生物采样。这些实验将在 LEO-15 天文台的框架内进行，通过将拉格朗日调查与卫星图像、地表水流和远场地下水文学的全陆架观测结合起来，能够解释染料研究。 LEO-15 将通过一系列跨架系泊仪器进行增强，以提供潮下环流、分层和雷诺应力的详细估计。此外，数据同化数值模拟将在现场实验期间提供沿海海洋的高分辨率和真实的后报。该模型将把染料示踪剂数据同化到 3D 沿海环流模型中，并指导未来将其他示踪剂同化到具有复杂源和汇的环流模型中。 这项工作的主要目的是区分在浮力羽流中运输/混合物质的物理过程与生物和化学转化过程，以及从拉格朗日角度量化生物和化学相互作用，以提供一种方法来评估它们在确定浮力羽流中营养物和化学污染物的命运和运输方面的重要性。拟议的实验计划将对比哈德逊羽流在上升流和下降流条件下的物理、生物和化学过程的响应。这项工作的一个主要成果将是确定新泽西州海岸和中大西洋湾羽流中污染物的程度和生物影响，并将提高预测污染物的命运和运输以及污染物进入沿海海洋食物链底部的速度的能力。