Upper Ocean Turbulent Fluxes and Mixing in the Weddell Sea

9315920 McPhee拟议的工作是一个综合研究计划（“Anzflux”）的一部分，到东部威德尔海的上部混合层的海洋学结构。 从RVI B Nathaniel B进行。帕尔默在1994年的冬天。 这里提出的工作是一个努力，以确定垂直和水平的温盐通量内的威德尔环流的东部。 具体而言，能够直接测量雷诺应力和湍流热通量的仪器组将悬挂在船舶附近的海冰上，持续两个独立的15天漂移期。 此外，在水中三个层次的微电导率传感器将提供直接测量的盐度通量，和一些热敏电阻串冻结在冰将测量冰内的热传导和冰的质量平衡。 这些测量，结合其他同步实验，以量化带到冰底的能量，将形成区域研究的基础上，负责相对厚的上混合层和薄冰盖的过程。 据信，这些条件只是勉强稳定，并由相对较高的向上热通量维持，如果中断，可能导致深层垂直对流和海洋气候的重大变化。 ***

9315920 McPhee 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 is an effort to define the vertical and horizontal thermohaline fluxes within the eastern part of the Weddell Gyre. Specifically, instrument clusters capable of measuring the Reynolds stress and the turbulent heat flux directly will be suspended from the sea ice near the ship for two separate fifteen day drift periods. Also, microconductivity sensors at three levels in the water will provide the directly measured salinity flux, and a number of thermistor strings frozen in the ice will measure the heat conduction within the ice and the ice mass balance. 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. ***