Modelling attenuation of irregular wave fields by artificial ice floes in the laboratory
Toffoli, A.; Pitt, J.P.A.; Alberello, A.; Bennetts, L.G. (2022). Modelling attenuation of irregular wave fields by artificial ice floes in the laboratory. Philos. Trans. - Royal Soc., Math. Phys. Eng. Sci. 380(2235): 20210255. https://dx.doi.org/10.1098/rsta.2021.0255
In: Philosophical Transactions - Royal Society. Mathematical, Physical and Engineering Sciences. Royal Society: London. ISSN 1364-503X; e-ISSN 1471-2962, more
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water waves; wave attenuation; wave-ice interaction |
| Authors | | Top |
- Toffoli, A.
- Pitt, J.P.A.
- Alberello, A.
- Bennetts, L.G.
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| Abstract |
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. |
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