Toffoli A, Pitt J P A, Alberello A, Bennetts L G
Department of Infrastructure Engineering, The University of Melbourne, Parkville, Victoria 3010, Australia.
School of Mathematical Sciences, University of Adelaide, Adelaide, South Australia 5005, Australia.
Philos Trans A Math Phys Eng Sci. 2022 Oct 31;380(2235):20210255. doi: 10.1098/rsta.2021.0255. Epub 2022 Sep 12.
A summary is given on the utility of laboratory experiments for gaining understanding of wave attenuation in the marginal ice zone, as a complement to field observations, theory and numerical models. It is noted that most results to date are for regular incident waves, which, combined with the highly nonlinear wave-floe interaction phenomena observed and measured during experimental tests, implies that the attenuation of regular waves cannot necessarily be used to infer the attenuation of irregular waves. Two experiments are revisited in which irregular wave tests were conducted but not previously reported, one involving a single floe and the other a large number of floes, and the transmission coefficients for the irregular and regular wave tests are compared. The transmission spectra derived from the irregular wave tests agree with the regular wave data but are overpredicted by linear models due to nonlinear dissipative processes, regardless of floe configuration. This article is part of the theme issue 'Theory, modelling and observations of marginal ice zone dynamics: multidisciplinary perspectives and outlooks'.
本文总结了实验室实验在帮助理解边缘冰区波浪衰减方面的作用，作为对现场观测、理论和数值模型的补充。需要注意的是，迄今为止的大多数结果都是针对规则入射波的，这与实验测试中观察和测量到的高度非线性波-浮冰相互作用现象相结合，意味着规则波的衰减不一定能用来推断不规则波的衰减。本文重新审视了两个进行了不规则波测试但此前未报道的实验，一个涉及单个浮冰，另一个涉及大量浮冰，并比较了不规则波测试和规则波测试的透射系数。从不规则波测试得出的透射谱与规则波数据一致，但由于非线性耗散过程，无论浮冰配置如何，线性模型都会对其进行过度预测。本文是主题为“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。
