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

威德尔环流中的海冰特性和过程：AnZone 的一个组成部分

• 批准号: 9024809
• 负责人: Stephen Ackley
• 金额: $ 40.32万
• 依托单位: Department of Army Cold Regions Research & Engineering Lab
• 依托单位国家: 美国
• 项目类别: Interagency Agreement
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-07-01 至 1994-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9024809&HistoricalAwards=false
• 关键词: Sea; Ice; Properties; Processes; Weddell

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.

拟议的工作是调查韦德尔海西部常年、可能多年的巩固海冰覆盖的过程和性质，那里的海洋过程被认为主要是水平的，以及在季节变化性很高的韦德尔海中部和东部的类似计划，海洋似乎以垂直过程为主。西韦德尔海将于1992年在一个由美国和苏联科学家共同占据的冰原上进行。主要实验将是一个中尺度形变阵列，其位置由基于卫星的全球定位系统(GPS)确定。此外，还将对营地附近的各种类型的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，这些将在漂移持续时间内定期采样。将对冰样进行物理、化学、生物和光学性质的检查，以建立基线生态及其随着冰盖向北漂移而发生的变化。将在几个频率上进行雷达后向散射和被动微波发射测量，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。