Development of a fully coupled wind stress-wave-ocean coastal model system

IF 1.9 3区 工程技术 Q3 ENGINEERING, CIVIL Coastal Engineering Journal Pub Date : 2023-02-25 DOI:10.1080/21664250.2023.2179791
P. Zheng, Ming Li, Jianting Du, Cai-xian Wang, J. Wolf, Xue'en Chen
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Abstract

ABSTRACT To conserve momentum flux across the air-sea interface, a new wind stress-wave-ocean coupled coastal model system is developed. Via simulating a specific idealized tropical cyclone (TC), this model is firstly applied to study the impacts of three wave effects, including the commonly studied wave-breaking induced acceleration, wave-enhanced bottom friction and the seldom studied wave modified surface stress (WMWS), and the conservation of momentum flux across air-sea interface (MFB) on the predictions of storm surge and inundation. It is then further applied to investigate the role of above four effects in modeling the peak surge and inundation by generalizing the TC forcing with various physical parameters, including the TC intensity, size, translation speed, and bottom slope. The model results reveal that WMWS can contribute considerably to the total surge height and inundation distance in a relatively high-intensity TC and its contribution depends weakly on the varying bottom slopes, TC sizes or translation speeds. By contrast, the MFB can only considerably reduce the maximum storm surge with a small bottom slope, while its reduction on inundation distance is more significant. The present study thus highlights the importance and necessity of incorporating the commonly ignored effects of WMWS and MFB in coastal modeling.
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风-应力-波浪全耦合海洋海岸模型系统的开发
为了保持海气界面上的动量通量,建立了一种新的风应力-波-海耦合海岸模式系统。通过模拟一个特定的理想热带气旋(TC),首先应用该模型研究了通常研究的破波加速效应、波浪增强底摩擦效应和很少研究的波浪修正表面应力效应(WMWS)以及海气界面动量通量守恒效应(MFB)对风暴潮和淹没预报的影响。然后进一步应用上述四种效应,通过推广各种物理参数,包括TC强度、大小、平移速度和底部坡度,来研究上述四种效应在模拟峰值浪涌和淹没中的作用。模型结果表明,在相对高强度的TC中,WMWS对总风暴潮高度和淹没距离的贡献较大,其贡献对底部坡度、TC大小和平移速度的影响较小。相比之下,MFB只能在底部坡度较小的情况下显著降低最大风暴潮,而对淹没距离的降低更为显著。因此,本研究强调了在海岸模拟中纳入通常被忽视的WMWS和MFB效应的重要性和必要性。
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来源期刊
Coastal Engineering Journal
Coastal Engineering Journal 工程技术-工程:大洋
CiteScore
4.60
自引率
8.30%
发文量
0
审稿时长
7.5 months
期刊介绍: Coastal Engineering Journal is a peer-reviewed medium for the publication of research achievements and engineering practices in the fields of coastal, harbor and offshore engineering. The CEJ editors welcome original papers and comprehensive reviews on waves and currents, sediment motion and morphodynamics, as well as on structures and facilities. Reports on conceptual developments and predictive methods of environmental processes are also published. Topics also include hard and soft technologies related to coastal zone development, shore protection, and prevention or mitigation of coastal disasters. The journal is intended to cover not only fundamental studies on analytical models, numerical computation and laboratory experiments, but also results of field measurements and case studies of real projects.
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