由波浪观测估计陆面冰的弹性模量

IF 2.8 3区地球科学 Q2 GEOGRAPHY, PHYSICAL

Journal of Glaciology Pub Date : 2023-09-06 DOI:10.1017/jog.2023.63

J. Voermans, J. Rabault, A. Marchenko, T. Nose, T. Waseda, A. Babanin

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引用次数: 1

摘要

目前，由于缺乏海冰特性（包括弹性模量）的现场观测和信息，我们对波浪-冰相互作用的理解进展受到阻碍。在这里，我们通过在登陆海冰上部署三个开源地震检波器记录器，利用冰中波浪的观测来估计海冰的有效弹性模量。根据低频色散波的观测，我们获得了0.4–0.7 GPa范围内的有效弹性模量的估计值。这低于根据现场梁实验估计的1GPa的冰的纯弹性模量。重要的是，我们的实验观测值明显低于目前波浪模型中使用的默认值。虽然我们的估计并不代表所有海冰，但它确实表明，需要更多的测量来为波浪模型的这种复杂海冰特性的参数化发展提供信心。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Estimating the elastic modulus of landfast ice from wave observations

Progress in our understanding of wave–ice interactions is currently hindered by the lack of in situ observations and information of sea-ice properties, including the elastic modulus. Here, we estimate the effective elastic modulus of sea ice using observations of waves in ice through the deployment of three open-source geophone recorders on landfast sea ice. From observations of low-frequency dispersive waves, we obtain an estimate of the effective elastic modulus in the range of 0.4–0.7 GPa. This is lower than the purely elastic modulus of the ice estimated at 1 GPa as derived from in situ beam experiments. Importantly, our experimental observation is significantly lower than the default value currently in use in wave models. While our estimate is not representative for all sea ice, it does indicate that considerably more measurements are required to provide confidence in the development of parameterizations for this complex sea-ice property for wave models.

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来源期刊

Journal of Glaciology 地学-地球科学综合

CiteScore

5.80

自引率

14.70%

发文量

101

审稿时长

6 months

期刊介绍： Journal of Glaciology publishes original scientific articles and letters in any aspect of glaciology- the study of ice. Studies of natural, artificial, and extraterrestrial ice and snow, as well as interactions between ice, snow and the atmospheric, oceanic and subglacial environment are all eligible. They may be based on field work, remote sensing, laboratory investigations, theoretical analysis or numerical modelling, or may report on newly developed glaciological instruments. Subjects covered recently in the Journal have included palaeoclimatology and the chemistry of the atmosphere as revealed in ice cores; theoretical and applied physics and chemistry of ice; the dynamics of glaciers and ice sheets, and changes in their extent and mass under climatic forcing; glacier energy balances at all scales; glacial landforms, and glaciers as geomorphic agents; snow science in all its aspects; ice as a host for surface and subglacial ecosystems; sea ice, icebergs and lake ice; and avalanche dynamics and other glacial hazards to human activity. Studies of permafrost and of ice in the Earth’s atmosphere are also within the domain of the Journal, as are interdisciplinary applications to engineering, biological, and social sciences, and studies in the history of glaciology.