ANALYSIS ON CHARACTERISTICS OF MEASURED LARGE WAVES IN SEAS ADJACENT TO ZHEJIANG

Zhou Yang; Chen Jiachao; Zhang Junbiao; Song Zekun; Pan Yun; Yan Donghao

doi:10.19912/j.0254-0096.tynxb.2021-1590

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Acta Energiae Solaris Sinica ›› 2023, Vol. 44 ›› Issue (5) : 23-29. DOI: 10.19912/j.0254-0096.tynxb.2021-1590

ANALYSIS ON CHARACTERISTICS OF MEASURED LARGE WAVES IN SEAS ADJACENT TO ZHEJIANG

Zhou Yang¹, Chen Jiachao¹, Zhang Junbiao², Song Zekun², Pan Yun¹, Yan Donghao³

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Abstract

The wave characteristics under extreme weather conditions in the nearshore waters of Sanmen Bay in Zhejiang Province are presented based on field observation, and the differences between typhoon wave and cold wave are investigated. The observed wave parameters during typhoon and cold snap are analyzed by statistical analysis and regression analysis, and the variations of wave parameters and wave spectra during large wave processes are discussed. 5 typhoon wave processes and 1 cold wave process are observed during the whole year. The results show that when the low frequency swells are in a dominant position, the wave height has little correlation with the wind speed. However, when the high frequency wind seas are relatively large, the wave height and wind speed change synchronously. The sea waves during typhoons are mixed waves consisting of swells and wind seas. The wave spectra are mainly double-peaked, and there are also single-peaked spectra and multi-peaked spectra. The large waves during the cold snap are wind seas, and the wave spectra are mainly single-peaked.

Key words

typhoon wave / cold wave / regression analysis / wave spectrum / wind sea / swell

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Zhou Yang, Chen Jiachao, Zhang Junbiao, Song Zekun, Pan Yun, Yan Donghao. ANALYSIS ON CHARACTERISTICS OF MEASURED LARGE WAVES IN SEAS ADJACENT TO ZHEJIANG[J]. Acta Energiae Solaris Sinica. 2023, 44(5): 23-29 https://doi.org/10.19912/j.0254-0096.tynxb.2021-1590

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