Journal article
Current-induced dissipation in spectral wave models
H Rapizo, AV Babanin, D Provis, WE Rogers
Journal of Geophysical Research Oceans | AMER GEOPHYSICAL UNION | Published : 2017
DOI: 10.1002/2016JC012367
Abstract
Despite many recent developments of the parameterization for wave dissipation in spectral models, it is evident that when waves propagate onto strong adverse currents the rate of energy dissipation is not properly estimated. The issue of current-induced dissipation is studied through a comprehensive data set in the tidal inlet of Port Phillip Heads, Australia. The wave parameters analyzed are significantly modulated by the tidal currents. Wave height in conditions of opposing currents (ebb tide) can reach twice the offshore value, whereas during coflowing currents (flood), it can be reduced to half. The wind-wave model SWAN is able to reproduce the tide-induced modulation of waves and the re..
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Awarded by Office of Naval Research
Funding Acknowledgements
Bathymetry data were provided by the Hydrographic Survey Office of the Port of Melbourne Corporation. The standard for hydrographic survey is provided by the International Hydrographic Organization (IHO) in "IHO Standards for Hydrographic Survey Special Publication No. 44." The measured wave and current data are the property of the Port of Melbourne Corporation and permission to use them is gratefully acknowledged. Access to the data set used in this work can be requested by contacting the first (Henrique Rapizo henrique.rapizo@unimelb.edu.au) or the third (David Provis david.provis@cardno.com.au) authors. Support from the Australian Victorian Government through the Victorian International Research Scholarship is acknowledged by H.R. A.V.B. acknowledges support from the Australian Research Council Discovery grant DP130100227 and the US Office of Naval Research grant N00014-13-1-0278. Coauthor W.E.R. was supported by the Office of Naval Research through the 6.2 NRL Core Program, Program Element 0602435N. We are thankful to Saima Aijaz for suggestions on the configuration of the wave model.