ADCP and Mesoscale Current Observations in the Eastern Weddell Sea: A Component of ANZFLUX

9315019--拟议的工作是对东部韦德尔海上层混合层的海洋结构的综合研究计划(“海洋流动”)的一部分。它将于1994年南冬从RVIB纳撒尼尔·B·帕尔默进行。本文研究了区域尺度环流特征对小尺度湍流特征的影响。该项目由两个空间嵌套实验组成。一项小规模的实验将使用该船的声学多普勒海流剖面仪(ADCP)来测量海洋上层一米深间隔的脉动流结构。中尺度实验将利用海流、温度和盐度观测来确定区域尺度特征并观察它们的反馈效应。这些测量，连同其他同时进行的量化冰下能量的实验，将构成对造成相对较厚的上层混合层和较薄的冰盖的过程进行地区性研究的基础。据信，这些条件只是略微稳定，并由相对较高的向上热通量维持，如果中断，可能会导致深度垂直对流和海洋气候的显著变化。***

9315019 Muench The proposed work is part of an integrated research program ("Anzflux") into the oceanographic structure of upper mixed layer of the eastern Weddell Sea. It is to be carried out from the RVIB Nathaniel B. Palmer in the austral winter of 1994. The work proposed here concerns how regional-scale circulation features affect the smaller-scale turbulence features. This project consists of two spatially nested experiments. A small scale experiment will use the ship's Acoustic Doppler Current profiler (ADCP) to measure the fluctuating current structure at one meter depth intervals in the upper layers of the ocean. A mesoscale experiment will make use of current, temperature, and salinity observations to define regional-scale features and to observe their feedback effects. These measurements, in conjunction with other concurrent experiments to quantify the energy brought to the underside of the ice, will form the basis of a regional study of the processes responsible for the relatively thick upper mixed layer and thin ice cover. It is believed that these conditions are only marginally stable, and are maintained by a relatively high upward heat flux, which, if interrupted, could lead to deep vertical convection, and a significant change in the oceanic climate. ***