Evolution of wave directional properties in sea ice

IF 3.1 3区 地球科学 Q2 METEOROLOGY & ATMOSPHERIC SCIENCES Ocean Modelling Pub Date : 2023-12-20 DOI:10.1016/j.ocemod.2023.102305
Alberto Alberello , Emilian I. Părău , Qingxiang Liu , Francesca De Santi
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Abstract

Ocean waves and sea ice properties are intimately linked in the marginal ice zone (MIZ), nevertheless a definitive modelling paradigm for the wave attenuation in the MIZ is missing. The evolution of wave directional properties in the MIZ is a proxy for the main attenuation mechanism but paucity of measurements and disagreement between them contributed to current uncertainty. Here we provide an analytical evidence that viscous attenuation tilts the mean wave direction orthogonal to the sea ice edge and the narrows directionality. Departure from this behaviour are attributed to bimodality of the spectrum. We also highlight the need for high quality directional measurements to reduce uncertainty in the definition of the attenuation rate.

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海冰中波浪定向特性的演变
边缘冰区(MIZ)的海浪和海冰特性密切相关,但目前还没有关于边缘冰区海浪衰减的明确建模范例。边缘冰区波浪方向特性的演变是主要衰减机制的代表,但测量数据的匮乏和它们之间的分歧造成了目前的不确定性。在此,我们提供了一个分析证据,证明粘性衰减使平均波方向与海冰边缘和狭窄方向性正交。这种行为的偏离归因于频谱的双峰性。我们还强调了高质量定向测量的必要性,以减少衰减率定义中的不确定性。
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来源期刊
Ocean Modelling
Ocean Modelling 地学-海洋学
CiteScore
5.50
自引率
9.40%
发文量
86
审稿时长
19.6 weeks
期刊介绍: The main objective of Ocean Modelling is to provide rapid communication between those interested in ocean modelling, whether through direct observation, or through analytical, numerical or laboratory models, and including interactions between physical and biogeochemical or biological phenomena. Because of the intimate links between ocean and atmosphere, involvement of scientists interested in influences of either medium on the other is welcome. The journal has a wide scope and includes ocean-atmosphere interaction in various forms as well as pure ocean results. In addition to primary peer-reviewed papers, the journal provides review papers, preliminary communications, and discussions.
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