Mesoscale Circulation, Tides and Mixing on the Western Antarctic Peninsula Shelf: A Component of WINDSSOCK (ESR proposal #99-48)

南极西部半岛陆架的中尺度环流、潮汐和混合：WINDSSOCK 的组成部分（ESR 提案

• 批准号: 9910102
• 负责人: Laurence Padman
• 金额: $ 36.93万
• 依托单位: Earth and Space Research
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-11-01 至 2004-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9910102&HistoricalAwards=false
• 关键词: Mesoscale; Circulation; Tides; Mixing; Western

This project is a contribution to a coordinated attempt to understand the interactions of biological and physical dynamics by developing relationships among the evolution of the antarctic winter ice and snow cover, biological habitat variability, and the seasonal progression of marine ecological processes. The work will be carried out in the context of the Southern Ocean Experiment of the Global Ocean Ecosystem Dynamics Study (Globec), a large, multi-investigator study of the winter survival strategy of krill under the antarctic sea ice in the vicinity of Marguerite Bay on the western side of the Antarctic Peninsula.There are several aspects to this project: One is the collection, analysis, and archiving of Acoustic Doppler Current Profiler (ADCP), and Conductivity-Temperature-Depth (CTD) data in order to characterize mesoscale circulation features and the regional hydrography. Another is to develop an accurate and fully validated model of tidal currents in Marguerite Bay. A third is to provide a data set of small-scale processes such as shear instabilities, tidal stirring, mesoscale eddies, and double diffusion, that are required for the effective parameterization of the vertical diffusivities of heat, salt, and nutrients. The results of this project will provide a unified data set that satisfies the data requirement of the coordinated chemical and biological studies which will link water column and sea ice processes with the biology of krill and its predators. The results further will help to link these winter observations to similar observations made in summer and elsewhere around Antarctic in the international context of the Globec program. The overall objective is to develop a comprehensive ecosystem model that will test our understanding of the system, determine its sensitivities, and to provide an organizing mechanism for integrating the Southern Ocean Globec observations. ***

该项目是通过在南极冬季冰和雪覆盖，生物栖息地变异性以及海洋生态过程的季节性进步之间发展的关系来理解生物和物理动态相互作用的协调尝试的贡献。 这项工作将在全球海洋生态系统动力学研究（Globec）的南海洋实验的背景下进行，这是一项大型，多次评估的研究，对玛格丽特湾（Marguerite Bay）在南极湾（Marguerite Bay）附近的南极海冰下的冬季生存策略进行了多个研究，该项目的几个方面是一项分析：一项分析。 （ADCP）和电导率 - 温度深度（CTD）数据，以表征中尺度循环特征和区域水文。 另一个是在Marguerite湾开发一种准确且充分验证的潮流模型。 第三个是提供小规模过程的数据集，例如剪切不稳定性，潮汐搅拌，中尺度涡流和双扩散，这是有效参数化热，盐和营养素的有效参数化所必需的。 该项目的结果将提供一个统一的数据集，以满足协调的化学和生物学研究的数据需求，该数据将将水柱和海冰工艺与磷虾及其捕食者的生物学联系起来。 结果进一步将有助于将这些冬季观察结果与全球计划国际环境中夏季和南极附近其他地方的类似观察结果联系起来。 总体目标是开发一个综合的生态系统模型，该模型将测试我们对系统的理解，确定其敏感性并提供整合南方海洋环球观测的组织机制。 ***