Journal article
Wave spectral response to sudden changes in wind direction in finite-depth waters
S Aijaz, WE Rogers, AV Babanin
Ocean Modelling | Elsevier | Published : 2016
Abstract
The response of a wind-sea spectrum to sudden changes in wind directions of 180° and 90° is investigated. Numerical simulations using the third-generation wave spectral model SWAN have been undertaken at micro timescales of 30 s and fine spatial resolution of less than 10 m. The results have been validated against the wave data collected during the field campaign at Lake George, Australia. The newly implemented 'ST6' physics in the SWAN model has been evaluated using a selection of bottom-friction terms and the two available functions for the nonlinear energy transfer: (1) exact solution of the nonlinear term (XNL), and (2) discrete interactions approximation (DIA) that parameterizes the non..
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Awarded by Australian Research Council
Funding Acknowledgements
The funding for this study was provided by the Australian Research Council Discovery grant DP130100227 and the US Office of Naval Research grants N00014-13-1-0278 and N00014-13-WX-20825. The authors gratefully acknowledge the efforts of Dr. L. Cavaleri and Dr. G. van Vledder for their detailed reviews and recommendations that have led to a significant improvement of the manuscript. The contribution of the anonymous reviewer is appreciated. We thank Dr. S. Zieger of Swinburne University for the useful discussions and his comments on the manuscript. The Zieger swell dissipation formulation and negative wind input were implemented in the SWAN model by Dr. Y. Fan, post-doctoral fellow at Naval Research Laboratory. The simulations were performed on the gSTAR National facility at the Swinburne University of Technology. gSTAR is funded by the Swinburne University and the Australian Government's Education Investment Fund.