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Estimates of Sea Ice Mechanical Properties in the Kara Sea
Pure and Applied Geophysics ( IF 1.9 ) Pub Date : 2020-07-09 , DOI: 10.1007/s00024-020-02543-8
Chenglin Duan , Sheng Dong , Zhifeng Wang

On the basis of available public data, an approximate theoretical approach for characterizing the Arctic sea ice engineering properties is explored and discussed in the Kara Sea. The corrected ERA-Interim sea ice thickness and ORAP5 sea ice temperature database are selected as the basic ice physical parameters. The formulas recommended by ISO 19906 are chosen as the estimation criteria for the ice mechanical properties. The generalized extreme value theory is used to analyze the ice extreme statistics. Specifically, the typical mechanical properties including compressive strength, flexural strength, shear strength and elastic modulus are comprehensively studied. The results reveal that all the mechanical properties show higher levels in the northeastern zone than in the southwestern zone, with the heaviest ice regime around the southwestern Severnaya Zemlya. In addition, an uncertainty analysis is provided. Compared to the published measurements, the snowless flexural strength values obtained are relatively conservative. Additionally, the shear equation in ISO 19906 should be pre-corrected before practical application.

中文翻译:

喀拉海海冰力学特性估算

在现有公开数据的基础上,在喀拉海探索和讨论了表征北极海冰工程特性的近似理论方法。选择校正后的ERA-Interim海冰厚度和ORAP5海冰温度数据库作为基本冰物理参数。选择 ISO 19906 推荐的公式作为冰力学性能的估计标准。广义极值理论用于分析冰的极值统计量。具体而言,综合研究了典型的力学性能,包括压缩强度、弯曲强度、剪切强度和弹性模量。结果表明,东北地区的所有力学性能均高于西南地区,Severnaya Zemlya 西南部周围的冰层最重。此外,还提供了不确定性分析。与公布的测量值相比,获得的无雪弯曲强度值相对保守。此外,ISO 19906 中的剪切方程应在实际应用前进行预校正。
更新日期:2020-07-09
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