A numerical study on the effects of wave-current-surge interactions on the height and propagation of sea surface waves in Charleston Harbor during Hurricane Hugo 1989

被引:29
作者
Liu, Huiqing [1 ]
Xie, Lian [1 ]
机构
[1] N Carolina State Univ, Dept Marine Earth & Atmospher Sci, Raleigh, NC 27695 USA
基金
美国海洋和大气管理局;
关键词
Air-sea interaction; Wind waves; Storm surge; Inundation; Flooding; Hurricane; SYNTHETIC APERTURE RADAR; WIND-DRIVEN CIRCULATION; SHORT GRAVITY WAVES; STORM-SURGE; BOTTOM STRESSES; REFRACTION; INUNDATION; MODEL;
D O I
10.1016/j.csr.2009.03.013
中图分类号
P7 [海洋学];
学科分类号
0707 ;
摘要
The effects of wave-current interactions on ocean surface waves induced by Hurricane Hugo in and around the Charleston Harbor and its adjacent coastal waters are examined by using a three-dimensional (3D) wave-current coupled modeling system. The 3D storm surge modeling component of the coupled system is based on the Princeton Ocean Model (POM), the wave modeling component is based on the third generation wave model, Simulating WAves Nearshore (SWAN), and the inundation model is adopted from [Xie, L, Pietrafesa, L. J., Peng, M., 2004. Incorporation of a mass-conserving inundation scheme into a three-dimensional storm surge model. J. Coastal Res., 20, 1209-1223]. The results indicate that the change of water level associated with the storm surge is the primary cause for wave height changes due to wave-surge interaction. Meanwhile, waves propagating on top of surge cause a feedback effect on the surge height by modulating the surface wind stress and bottom stress. This effect is significant in shallow coastal waters, but relatively small in offshore deep waters. The influence of wave-current interaction on wave propagation is relatively insignificant, since waves generally propagate in the direction of the surface currents driven by winds. Wave-current interactions also affect the surface waves as a result of inundation and drying induced by the storm. Waves break as waters retreat in regions of drying, whereas waves are generated in flooded regions where no waves would have occurred without the flood water. (C) 2009 Elsevier Ltd. All rights reserved.
引用
收藏
页码:1454 / 1463
页数:10
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