A study of the influence of wave-current interaction on significant wave height in the Northwestern Pacific

Liu Na; Li Benxia; Wang Hui; Lv Honggang

doi:10.3969/j.issn.0253-4193.2016.09.003

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Liu Na, Li Benxia, Wang Hui, Lv Honggang. A study of the influence of wave-current interaction on significant wave height in the Northwestern Pacific[J]. Haiyang Xuebao, 2016, 38(9): 21-31. doi: 10.3969/j.issn.0253-4193.2016.09.003

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Liu Na, Li Benxia, Wang Hui, Lv Honggang. A study of the influence of wave-current interaction on significant wave height in the Northwestern Pacific[J]. Haiyang Xuebao, 2016, 38(9): 21-31. doi: 10.3969/j.issn.0253-4193.2016.09.003

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A study of the influence of wave-current interaction on significant wave height in the Northwestern Pacific

doi: 10.3969/j.issn.0253-4193.2016.09.003

1. Key Laboratory of Research on Marine Hazards Forecasting, National Marine Environmental Forecasting Center, Beijing 100081, China

Received Date: 2015-07-15
Rev Recd Date: 2015-11-04

Abstract

Abstract

Strong ocean current in the Northwestern Pacific has significant impact on the characteristics and distribution of ocean wave, especially during typhoon. A coupled current-wave modeling system based on the ROMS model and SWAN model is applied to study the current-induced modulation of significant wave height by wave-current interaction during Typhoon Danas, Typhoon Nari and Typhoon Wipha through October 6-17, 2013. The results indicated that the ocean current had significant impact on the simulation of significant wave height in the coupled modeling system. The significant wave height is closer to buoy observation when wave and current are coupled. The maximum enhanced significant wave height due to current is up to 1 m. It's indicated that the significant wave height always increases (decreases) when the wave direction is against (along) the background ocean current. And the effects of wave-current interactions are not only local but also spread a long distance with the propagation of wave. The wave-current coupled modeling system is important for wave forecasting in the Northwestern Pacific. The current induced in the coupled modeling system would contribute to high-precision ocean wave forecast.
- wave-current interaction,
- significant wave height,
- typhoon,
- Northwestern Pacific

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