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

该项目是一项为期三年的研究，研究海冰的热、力学和电特性随环境冰生长条件的演变函数。海冰的特征是复杂的，取决于外部因素，如空气和海洋温度、海洋盐度、溶解气体含量、冰/海洋界面的风和流，以及直接的冰生长历史本身。目前，理论上定义的海冰生长和发育模型无法得到充分的检验，因为无法获得独立得出的数据。首席研究人员开发了一个海冰模拟模型，该模型采用了一套具有代表性的气象和海洋条件，不仅估计了冰的剖面特性，而且估计了在各种环境条件下形成的海冰的综合特征。该项目的实地阶段将在阿拉斯加巴罗附近的海冰上进行，包括测量未变形的第一年海冰的生长、结构和性质轮廓。在生长季节，池塘将被砍掉几次，以刺激新冰的生长。该测量计划将在接下来的春夏两季跟踪从形成到变质和融化的整个周期内生长和特性的变化。还将对气象和海洋条件进行辅助观测。

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.