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Modeling Scattering Differences between Sea Ice Ridges

机译:海冰脊散射差异

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Sea ice ridges pose some of the greatest threats to navigation in polar and sub-polar regions and it is important to characterize ridges using remote sensing data. First year (FY) ridges and multi-year (MY) ridges may be present in the same region, but MY ridges are stronger and have the potential to cause greater damage to vessels and structures. A new approach has been developed to model electromagnetic (EM) scattering from sea ice ridges. Ridges are represented as having a rough surface over horizontally stratified and isotropic layers. The total scatter from the ridge is the sum of the scatter from the surface and the layers. This paper provides an overview of the modeling process and provides some initial simulation results showing the impacts of radar frequency and ice salinity on the scattered wave. Ice ridge surface and structure characteristics affect the nature of the scattered signal and additional work is required to determine if it is possible to reliably distinguish between ridge types. Future work will involve simulations using more detailed modeling of ice ridge profiles to better determine how radar frequency and ice ridge structure and phenology affect ice discrimination.
机译:海冰脊为极地和子极地区域导航的一些最大威胁构成了一些最大的威胁,并且使用遥感数据表征山脊是重要的。第一年(FY)山脊和多年(我的)脊可能存在于同一地区,但我的脊状越强,有可能对血管和结构造成更大的损害。已经开发了一种新的方法,以模拟海冰脊的电磁(EM)散射。脊代表在水平分层和各向同性层上具有粗糙表面。来自脊的总散射是从表面和层的散射的总和。本文介绍了建模过程的概述,提供了一些初始仿真结果,显示了雷达频率和冰盐度对散射波的影响。冰脊表面和结构特征影响散射信号的性质,并且需要额外的工作来确定是否有可能可靠地区分脊类型。未来的工作将涉及使用更详细的冰脊型材建模来仿真,以更好地确定雷达频率和冰脊结构和候选如何影响冰歧视。

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