Perrie Will, Meylan Michael H, Toulany Bechara, Casey Michael P
Fisheries and Oceans Canada, Bedford Institute of Oceanography, Dartmouth, Nova Scotia, Canada.
School of Information and Physical Sciences, The University of Newcastle, Callaghan, New South Wales, Australia.
Philos Trans A Math Phys Eng Sci. 2022 Oct 31;380(2235):20210263. doi: 10.1098/rsta.2021.0263. Epub 2022 Sep 12.
This study concerns wave-ice interactions in the marginal ice zone (MIZ). We compare idealized simulations using two recent three-dimensional formulations for wave-ice interactions for flexible ice floes, with selected parametrizations for the scattering of ocean surface waves due to individual ice floes. These parametrizations are implemented in a modern version of the wave model WAVEWATCH III® (hereafter, WW3) as source terms in the action balance equation. The comparisons consist of simple hypothetical experiments to identify characteristics of the wave-ice parametrizations. Comparisons show that the two new wave-ice formulations give attenuation of wave heights that can be less intense in the direction of propagation than those of other considered formulations. Within the wave energy spectrum, the one-dimensional attenuation extends over the entire frequency domain to the high-frequency limit. Within the MIZ beyond the ice edge, there is evidence for a 'roll-over' effect in the simulations of attenuation. These new formulations can potentially improve previous parametrizations in simulations of wave scattering and attenuation within the MIZ. This article is part of the theme issue 'Theory, modelling and observations of marginal ice zone dynamics: multidisciplinary perspectives and outlooks'.
本研究关注边缘冰区（MIZ）中的波 - 冰相互作用。我们使用两种近期针对柔性浮冰的波 - 冰相互作用的三维公式进行理想化模拟，并为单个浮冰引起的海洋表面波散射选择了参数化方法。这些参数化方法在波浪模型WAVEWATCH III®（以下简称WW3）的现代版本中作为作用平衡方程中的源项来实现。比较包括简单的假设实验，以确定波 - 冰参数化的特征。比较表明，这两种新的波 - 冰公式给出的波高衰减在传播方向上可能比其他考虑的公式的衰减强度更小。在波能谱内，一维衰减延伸到整个频域直至高频极限。在冰缘之外的边缘冰区内，模拟衰减中存在“翻转”效应的证据。这些新公式可能会改进先前在边缘冰区内波散射和衰减模拟中的参数化方法。本文是主题特刊“边缘冰区动力学的理论、建模与观测：多学科视角与展望”的一部分。
