Sea Ice Deformation Mapping by Means of Synthetic Aperture Radar

将设计一个概念，利用从合成孔径雷达（SAR）图像检索的参数，以评估海冰的大气阻力系数。将制定绘制和量化海冰表面结构和变形的方法。G.浮冰大小分布、脊间距）。考虑到不同的合成孔径雷达系统将在不久的将来发射到空间，建议的调查考虑雷达频率，极化，和空间分辨率的参数反演的效果。将评估检索方法及其准确性。将分析合成孔径雷达后向散射变化、与海冰变形和表面结构有关的反演参数以及大气阻力系数之间的潜在相关性。将在大气边界层过程的数值模拟中检验检索参数的利用情况。关于海冰表面结构和变形的定量信息也可用于建立海冰动力学模型、估计海冰质量平衡、划分冰的类型，以及用于海上运输和近海作业的安全和效率。

A concept that utilizes parameters retrieved from synthetic aperture radar (SAR) imagery will be devised in order to evaluate the atmospheric drag coefficient of sea ice. Methods will be developed for mapping and quantifying sea ice surface structure and deformation (e. g. floe size distribution, ridge spacing) from radar data. Considering that different SAR systems will be launched into space in the near future, the proposed investigations consider the effect of radar frequency, polarization, and spatial resolutions on the parameter retrieval. Retrieval methods and their accuracy will be assessed. Potential correlations between SAR backscatter variations, retrieved parameters related to sea ice deformation and surface structure, and the atmospheric drag coefficient will be analysed. The utilization of the retrieved parameters will be tested in numerical simulations of atmospheric boundary layer processes. Quantitative information about the sea ice surface structure and deformation is also of use for modelling sea ice dynamics, estimating sea ice mass balance, classifying ice types, and for safety and efficiency of marine transport and offshore operations.