Weddell Gyre Physical Oceanographic Studies

这项提议的工作是威德尔海西部海洋学结构综合研究计划的主要项目。它将于1992年2月至6月在美国和苏联科学家共同占领的一个冰营进行。本项目关注大尺度海洋环流和威德尔海边界流的变率，以及它们如何影响和受区域水团形成和修正过程的影响。根据威德尔海的能量交换模式，威德尔海可以划分为三个区域。暖区出现在东部，温暖的环极深水的侵入使水温保持在+1摄氏度。冷区出现在中心，深水被一层厚的接近冰点的混合层覆盖。然而，在这两个地区，季节性地有足够的热量输送到海冰，使其完全融化。在西部地区，海冰没有融化，预计热力学过程会有所不同。水文测量数据，加上海流计观测、化学示踪实验、湍流通量测量和海冰动力学，这些都是该项目的一部分，将提供威德尔海大陆斜坡过程的独特图景。

The proposed work is the lead project in an integrated research program into the oceanographic structure of the western Weddell Sea. It is to be carried out from an ice camp jointly occupied by U.S. and USSR scientists from February to June 1992. This project concerns the large-scale oceanographic circulation and the variability of the Weddell Sea boundary current, and how these affect and are affected by the regional water mass formation and modification processes. The Weddell Sea may be divided into three regions on the basis of the energy exchange mode. The warm regime occurs in the east where the intrusion of warm circumpolar deep water keeps the water temperature nea +1 deg C. The cold regime occurs in the center, where deep water is overlain by a thick near freezing mixed layer. In both regions however enough heat is seasonally carried to the sea ice to melt it completely. In the western region, the sea ice cover does not melt, and it is expected that the thermodynamics processes will be different. Hydrographic data, coupled with the current meter observations, chemical tracer experiments, turbulent flux measurements, and sea ice dynamics that are part of this project, will provide a unique picture of the Weddell Sea continental slope processes.