Wave and Pancake Ice Interactions

波浪和薄饼冰相互作用

• 批准号: 9219165
• 负责人: Hayley Shen
• 金额: $ 31.35万
• 依托单位: Clarkson University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-03-01 至 1998-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9219165&HistoricalAwards=false
• 关键词: Wave; Pancake; Ice; Interactions

This project combines theoretical modeling with laboratory experiments of the freezing of ice floes in a wave field. Wave and sea ice interaction is a little known area of research with however strong implications for both the large-scale ice dynamics, and local-scale physical and biological processes in the marginal ice zone. The proposed work consists of parallel investigations of computer-simulated data to determine the the relation between wave characteristics and the rate and duration of floe interactions on the one hand, and a series of wave tank experiments on the other hand. These experiments will evolve from a simple one-dimensional wave propagating into a field of simulated ice floes to examine floe movement and clustering, to two-dimensional experiments in a refrigerated wave tank to study the actual freezing process which is believed to involve the compaction of newly generated frazil ice and the welding together of individual so-called "pancakes" into successively larger ice floes. When the surface layers of the ocean are close to the freezing point of sea water, such a process operating on the 10 cm to 1 m scale, can extend the ice edge seaward extremely rapidly, with significant effects on antarctic meteorological and biological processes.

本项目将浮冰在波浪场中冻结的理论模拟与实验室实验相结合。海浪和海冰相互作用是一个鲜为人知的研究领域，但对边缘冰区的大尺度冰动力学和局部尺度的物理和生物过程都有很大的影响。这项工作包括对计算机模拟数据的平行研究，以确定波浪特性与浮体相互作用的速度和持续时间之间的关系，以及一系列的波浪水槽实验。这些实验将从简单的一维波传播到模拟浮冰场，以检查浮冰的运动和聚集，演变为在冷冻波槽中进行二维实验，以研究实际的冻结过程，据信这涉及新生成的碎冰的压实和单个所谓的“煎饼”焊接成连续更大的浮冰。当海洋表层接近海水的冰点时，这种在10厘米至1米尺度上运行的过程可以极快地将冰缘向海延伸，对南极的气象和生物过程产生重大影响。