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

基本信息

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

项目摘要

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.

拟议的工作是对西韦德尔海西部综合多年生（可能是多年的海冰覆盖）的过程和特性的研究，认为海洋学过程在很大程度上是水平的，并且在中部和东部的韦德尔海中的类似计划中，季节性可变性很高，海洋似乎占据了垂直过程。西韦德尔海将于1992年在美国和苏联科学家共同占据的冰上营地进行。主要实验将是一个中尺度变形阵列，位置由基于卫星的全球定位系统（GPS）确定。此外，将进行营地附近各种冰层的长期热量和质量平衡测量。这涉及安装冰厚度仪，热敏电阻（温度）字符串和应力传感器，它们将在漂移持续时间内定期采样。将检查冰样品的物理，化学，生物学和光学特性，以建立基线生态及其变化，因为冰盖向北漂移。将在几个频率上进行雷达反向散射和被动微波排放测量，以建立海冰的介电特性，并为将来的基于卫星的雷达实验提供地面真相信息。