Interrelations Between Structural Characteristics, Physical Properties, and SAR Signatures of Late-Summer Pack Ice in the Beaufort-Chukchi Sea

本项目是一个组成和性质的研究，以及 作为相关的合成孔径雷达（SAR）签名的温暖 北极海冰 将从美国海岸进行直接测量 1992年夏末和1993年， 博福特和楚科奇海。 海冰特征将是 调查将包括厚度，盐度和温度 剖面、介电性能、晶体结构和表面 条件 这些特征将被用来模拟 预期的微波后向散射强度，将进行比较 与SAR仪器获得的观测到的后向散射强度 在ERS-1和JERS-1卫星上。 该项目将 有助于更好地了解内部结构 北极的浮冰，温暖的海洋在夏天的特殊性质， 冰，以及不同冰引起的SAR信号变化 特色 这项研究所产生的信息是 预计将在其他领域的极地特别有价值 海洋学研究，如海冰动力学和 热力学、冰力学和流变学、海洋热和盐 通量和海冰生物过程。

This project is a study of the composition and properties, as well as the associated synthetic aperture radar (SAR) signatures of warm arctic sea ice. Direct measurements will be made from US Coast Guard icebreakers in the late summers of 1992 and 1993 in the Beaufort and Chukchi Seas. Sea ice characteristics to be investigated will include thickness, salinity and temperature profiles, dielectric properties, crystal structure, and surface conditions. These characteristics will be used to model the expected microwave backscatter intensities, which will be compared to observed backscatter intensities obtained by the SAR instruments on board the ERS-1 and JERS-1 satellites. The project will contribute to an improved understanding of the internal structure of arctic pack ice, of the specific summer properties of warm sea ice, and SAR signature variations produced by differing ice characteristics. The information produced by this study is expected to be particularly valuable in other fields of polar oceanographic research, such as sea ice dynamics and thermodynamics, ice mechanics and rheology, oceanic heat and salt fluxes, and sea ice biological processes.