Ice Station Weddell: Physical Oceanography Data Analysis Phase

9313700戈登这个项目是对作为威德尔海西部海洋结构综合研究方案一部分而获得的数据集的分析。这项野外工作是1992年2月至6月在美国和俄罗斯科学家共同占领的一个冰营地进行的。首席调查员的工作是研究方案的牵头项目，涉及大尺度海洋环流和韦德尔海边界流的可变性，以及这些因素如何影响区域水团的形成和修改过程。根据能量交换模式，威德尔海可以划分为三个区域。暖态出现在东部，温暖的环极地深水入侵使水温保持在+1℃附近；冷态出现在中部，深水被厚厚的近冰冻混合层覆盖。然而，在这两个地区，季节性地将足够的热量输送到海冰，使其完全融化。在西部地区，海冰覆盖不融化，预期的热力学过程不同。水文数据，再加上海流计观测和化学示踪实验，以及作为实地工作一部分的湍流通量测量和海冰动力学，已经为韦德尔海大陆坡过程提供了一幅独特的图景。***

9313700 Gordon This project is the analysis of the data set obtained as part of an integrated research program into the oceanographic structure of the western Weddell Sea. The field work was carried out from an ice camp jointly occupied by U.S. and Russian scientists from February to June 1992. The principal investigator's work was the lead project in the research program and concerned 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 near +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 the expected thermodynamic processes are different. Hydrographic data, coupled with the current meter observations and chemical tracer experiments, as well as turbulent flux measure- ments, and sea ice dynamics that were part of the field work have already provided a unique picture of the Weddell Sea continental slope processes. ***