Sea Ice Properties and Processes in the Weddell Gyre: A Component of AnZone

拟议的工作是对威德尔海西部的一个巩固的多年生，可能是多年的海冰覆盖的过程和特性进行调查，那里的海洋过程被认为主要是水平的，在威德尔海中部和东部也有类似的项目，那里的季节变化很大，海洋似乎由垂直过程主导。西威德尔海将于1992年在美国和苏联科学家共同占领的一个冰营进行。主要实验将是一个中尺度变形阵列，其位置由基于卫星的全球定位系统（GPS）确定。此外，将对营地附近的各种冰进行长期的热量和质量平衡测量。这包括安装冰厚计、热敏电阻（温度）串和应力传感器，这些传感器将在漂流期间定期采样。将对冰样品进行物理、化学、生物和光学性质的检查，以便建立一个基线生态及其随冰盖向北漂移的变化。雷达后向散射和无源微波发射测量将在几个频率上进行，以确定海冰的介电特性，并为未来的卫星雷达实验提供地面真实信息。

The proposed work is an investigation of the processes and properties of a consolidated perennial, possibly multi-year, sea ice cover in the western Weddell Sea where oceanographic processes are presumed to be largely horizontal, and a similar program in the central and eastern Weddell Sea where seasonal variability is high, and the ocean appears to be dominated by vertical processes. The western Weddell Sea will be carried out in 1992 at an ice camp occupied jointly by U.S. and USSR scientists. The principal experiment will be a mesoscale deformation array with location being determined by the satellite-based Global Positioning System (GPS). Additionally, long-term heat and mass balance measurements on various ice types in the vicinity of the camp will be carried out. This involves installing ice thickness gauges, thermistor (temperature) strings, and stress sensors, which will be sampled periodically over the duration of the drift. Ice samples will be examined for physical, chemical, biological, and optical properties in order to establish a baseline ecology and its variations as the ice cover drifts northward. Radar backscatter and passive microwave emission measurements will be made at several frequencies to establish the dielectric properties of the sea ice and to provide ground truth information for future satellite-based radar experiments.