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 (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.诸如此类的城市河口羽流是将养分和化学污染物运输到沿海海洋的主要途径。该材料的命运和运输不仅由羽流动力学控制，而且还通过与羽流的动力学结合的生物学和化学过程控制。为了研究这些过程，PIS建议使用牵引车进行一系列染料实验，并连续进行化学和生物学采样。这些实验将发生在LEO-15天文台的框架内，以通过将Lagrangian的调查放置在卫星图像，表面电流和远场地下水文的情况下，从而对染料研究进行解释。 LEO-15将通过系泊仪器的跨架子阵列增强，以提供底部循环，分层和雷诺应力的详细估计。此外，在现场实验期间，数据合并数值模拟将为沿海海洋提供高分辨率和现实的后广播。该建模将把染料跟踪数据吸收到3-D沿海循环模型中，并指导未来的努力将其他示踪剂吸收到具有复杂来源和水槽的循环模型中。 这项工作的主要目的是区分浮力和化学转化过程中运输/混合材料的物理过程，以及从Lagrangian的角度量化生物和化学相互作用的定量，以评估其在浮力羽毛中确定营养物质和化学污染物的命运和化学污染物的重要性。提出的实验计划将对比在上升和下降条件下哈德逊羽流中物理，生物学和化学过程的反应。这项工作的一个主要结果将是确定沿新泽西海岸和中大西洋中部羽毛污染物在羽流中污染物的程度和生物学影响，并将提高预测污染物的命运和运输的能力，以及它们进入沿海海洋中食物链基础的速度。