TY - JOUR
T1 - Modelling attenuation of irregular wave fields by artificial ice floes in the laboratory
AU - Toffoli, A.
AU - Pitt, J. P. A.
AU - Alberello, A.
AU - Bennetts, L. G.
N1 - Funding Information: The authors acknowledge support from the Australian Research Council grant no. DP200102828. L.G.B. is supported by the Australian Research Council grant no. FT190100404. The multiple-floe experiment was funded by the Collaborative and Innovative Technology Program in Exploration and Production of Hydrocarbons, with major sponsors Total, Saipem and Doris Engineering.
PY - 2022/10/31
Y1 - 2022/10/31
N2 - 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.
AB - 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.
KW - water waves
KW - wave attenuation
KW - wave–ice interaction
UR - http://www.scopus.com/inward/record.url?scp=85128404108&partnerID=8YFLogxK
U2 - 10.1098/rsta.2021.0255
DO - 10.1098/rsta.2021.0255
M3 - Article
SN - 1364-503X
VL - 380
JO - Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences
JF - Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences
IS - 2235
M1 - 20210255
ER -