Measurement and Simulation of the Profile Properties of Undeformed First-Year Sea Ice

未变形一年海冰剖面特性的测量与模拟

• 批准号: 8721977
• 负责人: Wilford Weeks
• 金额: $ 32.88万
• 依托单位: University of Alaska Fairbanks Campus
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-05-01 至 1992-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8721977&HistoricalAwards=false
• 关键词: Measurement; Simulation; Profile; Properties; Undeformed

This project is a three-year study of the thermal, mechanical, and electrical characteristics of sea ice as evolutionary functions of the environmental ice growth conditions. The characteristics of sea ice are complex, depending on external factors such as air and ocean temperature, ocean salinity, dissolved gas content, winds and currents at the ice/ocean interface, as well as the immediate ice growth history itself. At this time the theoretically defined models of sea ice growth and development cannot be adequately tested, because independently derived data is not available. The principal investigators have developed a sea ice simulation model that takes a representative set of meteorological and oceanographic conditions and estimates not only the ice profile properties, but also the composite characteristics of sea ice sheets that have formed under a wide range of environmental conditions. The field phase of this project, to be carried out on the sea ice off Barrow, Alaska, includes the measurement of growth, structure and property profiles of undeformed first-year sea ice. Several times during the growing season ponds will be cut in order to stimulate the growth of new ice. The measurement program will track the changes in growth and characteristics through the entire cycle from formation to deterioration and melt in the following Spring and Summer. Supporting observations of the meteorological and oceanographic conditions will also be made.

这个项目是一个为期三年的研究热，机械， 海冰的电特性作为海冰的演化函数 冰的生长环境。 海冰的特征 复杂，取决于空气和海洋等外部因素 温度、海洋盐度、溶解气体含量、风和海流 在冰/海洋界面，以及直接的冰增长， 历史本身。 在这个时候，理论上定义的海洋模型 冰的生长和发展不能得到充分的测试，因为 没有独立得出的数据。 主要的研究人员已经开发了一个海冰模拟模型 需要一套有代表性的气象学和海洋学 条件和估计不仅冰剖面属性，而且 形成的海冰的复合特征 广泛的环境条件。 这场比赛的现场阶段 该项目将在阿拉斯加巴罗附近的海冰上进行，包括 测量的生长，结构和性能概况 未变形的第一年海冰 在成长过程中， 季节性池塘将被切割，以刺激新冰的生长。 测量程序将跟踪增长的变化， 整个周期的特征，从形成到 在接下来的春天和夏天腐烂和融化。 支持 气象和海洋状况的观测将 也可以做。