Collaborative Research: WinDSSOcK: Winter Distribution and Success of Southern Ocean Krill

该项目是一个协调的尝试，了解生物和物理动力学的相互作用，通过发展南极冬季冰雪覆盖，生物栖息地的变化，海洋生态过程的季节性进展之间的关系。 这项工作将在全球海洋生态系统动力学研究的南大洋实验范围内进行，这是一项由多名研究人员对南极半岛西侧玛格丽特湾附近南极海冰下磷虾冬季生存策略进行的大型研究，目的是在玛格丽特湾外的大陆架上开发和部署一系列系泊设备。 这些设备将包括流速计、盐度和温度传感器、浮游动物浓度、跟踪冰运动的上视声学探测器以及声学多普勒海流剖面仪。 拟议的系泊设计将量化和表征流入和流出的水体，并为综合建模工作提供物理组件。 系泊数据将由跟踪表面流的仪表漂移器补充。玛格丽特湾外大陆架上的水团由流入的上绕极深水组成，相对温暖，含盐，缺氧，营养丰富。 在冬季，大气过程冷却和清新这些水，并为其补充氧气以产生南极地表水，这些地表水向海洋扩散，并支持海冰覆盖和以磷虾为基础的多产食物网。 该项目产生的观测结果将量化通过海湾的假定顺时针流动的空间和时间变化，并确定风暴和南极绕极流向南弯曲驱动的潮汐和瞬时流动。

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.The objective of this project is to develop and deploy a series of moorings on the continental shelf off Marguerite Bay. These will include current meters, salinity and temperature sensors, zooplankton concentration, upward-looking acoustic sounders to track ice motion, and acoustic doppler current profilers. The proposed mooring design will quantify and characterize the inflowing and outflowing water masses and provide the physical component for the integrated modeling effort. The mooring data will be supplemented by instrumented drifters that track surface flow.The water masses on the continental shelf off Marguerite Bay consist of inflowing Upper Circumpolar Deep Water, which is relatively warm, salty, oxygen-poor, and nutrient-rich. In winter atmospheric processes cool and freshen this water, and recharge it with oxygen to produce Antarctic Surface Water which is diffused seaward, and supports both a sea ice cover and a productive krill-based food web. The observations produced by this project will quantify the spatial and temporal variability of the presumed clockwise flow through the bay, and define the tidal and transient flows driven by storms and southward meanders of the Antarctic Circumpolar Current.***