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首页> 外文期刊>Journal of Physical Oceanography >Marginal Ice Zone Thickness and Extent due to Wave Radiation Stress
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Marginal Ice Zone Thickness and Extent due to Wave Radiation Stress

机译：波辐射应力导致的边缘冰区厚度和范围

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摘要

Ocean surface wave radiation stress represents the flux of momentum due to the waves. When waves are dissipated or reflected by sea ice, that momentum is absorbed or reflected, resulting in a horizontal forcing that frequently compresses the ice. In this work, wave radiation stress is used to estimate the compressive force applied by waves to the marginal ice zone (MIZ). It is balanced by an ice internal compressive stress based on Mohr-Coulomb granular materials theory. The ice internal stress can be related to ice thickness, allowing this force balance to be used as a model for the estimation of MIZ ice thickness. The model was validated and tested using data collected during two field campaigns in the St. Lawrence estuary in 2016 and 2017. Modeled ice thickness was found to be consistent with the mean measured ice thickness over the conditions available. The range of validity of the model is discussed, and a definition of MIZ extent, based on the relative strength of wind and wave forcing, is proposed.
机译：海洋表面波辐射应力代表由于波浪引起的动量通量。当海浪消散或反射海浪时，动量就会被吸收或反射，从而产生水平力，从而经常压缩冰层。在这项工作中，波浪辐射应力用于估算波浪施加到边缘冰区（MIZ）的压缩力。根据Mohr-Coulomb颗粒材料理论，它受到冰内部压缩应力的平衡。冰的内部应力可能与冰的厚度有关，从而可以将此力平衡用作估算MIZ冰厚度的模型。使用在2016年和2017年在圣劳伦斯河口的两次野外运动期间收集的数据对模型进行了验证和测试。发现模型冰厚度与在可用条件下测得的平均冰厚度一致。讨论了模型的有效性范围，并基于风和波浪强迫的相对强度，提出了MIZ范围的定义。

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