长江流域资源与环境 >> 2020, Vol. 29 >> Issue (5): 1192-1198.doi: 10.11870/cjlyzyyhj202005014

• 生态环境 • 上一篇    下一篇

巢湖风浪特征观测

张怡辉1,胡维平1,郭西亚2   

  1. (1.中国科学院南京地理与湖泊研究所,湖泊与环境国家重点实验室,江苏 南京 210008; 2.江苏省环境科学研究院,江苏 南京 210036)
  • 出版日期:2020-05-20 发布日期:2020-07-13

Observation on the Characteristics of Wind Wave in Chaohu Lake

ZHANG Yi-hui 1, HU Wei-ping 1, GUO Xi-ya 2   

  1. (1.Nanjing Institute of Geography and Limnology,Chinese Academy of Sciences, State Key Laboratory
    of Lake Science and Environment, Nanjing 210008, China; 2.Jiangsu Provincial Academy
    of Environmental Science, Nanjing 210036, China)
  • Online:2020-05-20 Published:2020-07-13

摘要:

摘要: 基于巢湖不同位置的气象和风浪实测资料,对巢湖的风浪特征进行了详细的分析。不同测站观测期间有效波高超过0.4 m情景出现频率介于2.22%~9.78%之间,观测期间巢湖整体平均有效波高为0.11 m。巢湖风浪的平均周期为1.45~3.33 s,平均值为2.18 s;上跨零周期为1.37~3.26 s,平均值为2.13 s;谱峰周期为1.01~4.41 s,平均值为2.30 s;谱峰周期与平均波周期和跨零周期都存在明显的线性相关,相关系数分别为0.74和0.68。巢湖风浪能量主要集中在0.2~0.6 Hz频率区间内,能量主要分布在0.5 fp~1.5 fp的频带范围内,谱型与常用的JONSWAP谱和PM谱谱型明显不同。

Abstract:


Abstract:Based on the measured data of meteorological and wind wave at different stations in Chaohu Lake, the characteristics of wind wave were analyzed in detail.During the observation period of different stations, the frequency of the significant wave height over 0.4 m was between 2.22% and 9.78%.The average significant wave height of Chaohu Lake during the observation period was about 0.11 m.The average period of wind wave in Chaohu Lake with an average of 2.18 s ranged from 1.45 s to 3.33 s.The upper zero-cross period of wind wave with an average of 2.13 s ranged from 1.37 s to 3.26 s.The peak period with an average of 2.30 s ranged from 1.01 s to 4.41 s.There were significant linear correlation between the peak period and the average wave period or the upper zero-cross period, and the correlation coefficients were 0.74 and 0.68, respectively.The wave energy of wind wave in Chaohu Lake was mainly concentrated in the frequency range of 0.2-0.6 Hz.That is, the energy was mainly distributed in the frequency range of 0.5 fp-1.5 fp.The spectrum was obviously different from the commonly used JONSWAP spectrum and PM spectrum.

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