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A study on bimodal spectral patterns based on fixed-point observation data in Jiangsu sea area
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Yini Yang1, 2, 3, Aifeng Tao1, 2, *, Liwei Cao1, 2, Jun Fan1, 2, Gang Wang1, 2
Haiyang Xuebao | 2024, 46(2) : 107 - 116
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Haiyang Xuebao | 2024, 46(2): 107-116
A study on bimodal spectral patterns based on fixed-point observation data in Jiangsu sea area
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Yini Yang1, 2, 3, Aifeng Tao1, 2, *, Liwei Cao1, 2, Jun Fan1, 2, Gang Wang1, 2
Affiliations
  • 1. Key Laboratory of Ministry of Education for Coastal Disaster and Protection, Hohai University, Nanjing 210024, China
  • 2. College of Harbour, Coastal and Offshore Engineering, Hohai University, Nanjing 210024, China
  • 3. PowerChina Northwest Engineering Corporation Limited, Xi’an 710065, China
Published: 2024-02-29 doi: 10.12284/hyxb2024003
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As a national key construction sea area, the trend of offshore wind power construction in the Jiangsu sea area towards the open sea is the main trend of future development. The open sea areas have more surge components, and the wave spectrum often appears in the form of bimodal spectrum. Therefore, the wave characteristics of bimodal spectrum waves need further in-depth research to provide reference basis for offshore construction. Based on the observation data of the buoy station throughout 2018, 1223 bimodal spectral data were obtained through outlier testing and bimodal spectral identification. The bimodal spectral characteristics of waves in the Jiangsu sea area were studied, and different typical bimodal spectral types were compared. The fitting of the measured bimodal spectra was carried out, and the corrected spectral width parameters were proposed. The dependency relationship between the correction coefficient, peak rise factor, and spectral width parameters was explored, and the bimodal spectral fitting expression was obtained. The results indicate that the Ochi–Hubble spectrum proposed based on the North Atlantic sea area and the Torsethaugen spectrum proposed based on the Norwegian sea area are not applicable to the bimodal spectrum type in the Jiangsu sea area. The bimodal JONSWAP fitting spectrum proposed in this paper has adaptability and can scientifically and reasonably describe the bimodal spectrum in the Jiangsu sea area, and is widely applied to different wind and terrain conditions in the sea area.

Jiangsu sea area  /  bimodal spectrum  /  Ochi-Hubble six parameter spectrum  /  Torsethaugen bimodal spectrum  /  bimodal JONSWAP fitting spectrum
Yini Yang, Aifeng Tao, Liwei Cao, Jun Fan, Gang Wang. A study on bimodal spectral patterns based on fixed-point observation data in Jiangsu sea area[J]. Haiyang Xuebao, 2024 , 46 (2) : 107 -116 . DOI: 10.12284/hyxb2024003
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Year 2024 volume 46 Issue 2
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Article Info
doi: 10.12284/hyxb2024003
  • Receive Date：2023-11-02
  • Online Date：2025-11-25
  • Published：2024-02-29
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History
  • Received：2023-11-02
  • Revised：2023-12-08
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Affiliations
    1. Key Laboratory of Ministry of Education for Coastal Disaster and Protection, Hohai University, Nanjing 210024, China
    2. College of Harbour, Coastal and Offshore Engineering, Hohai University, Nanjing 210024, China
    3. PowerChina Northwest Engineering Corporation Limited, Xi’an 710065, China
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https://castjournals.cast.org.cn/joweb/hyxb/EN/10.12284/hyxb2024003
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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