摘要
受狭管效应的影响,台湾海峡波浪较大且常与涌浪混合存在。涌浪对包括船舶在内的浮式结构物有着重要的影响,而风涌浪分离是研究涌浪特性的必要前提,也一直是研究的热点和困难问题。由于数据的欠缺和观测条件的限制,在风涌浪分离方法中被普遍认可的二维谱方法常常难以使用,如何选择更为精准的一维谱方法往往会成为实际研究和应用过程中必须面对的问题。利用台湾海峡内3个具有二维谱数据的测站,通过将二维谱分离结果作为参考,针对台湾海峡风浪和涌浪的特征,探讨了风涌浪分离一维谱方法在该海域的适用性问题,研究表明风速法相较其他方法精度更好,在这一基础上提出了一种将波谱积分法与风速法相结合的一维谱方法。
Due to the narrow tube effect,ocean waves are large and usually mixed with swell in the Taiwan Strait.Much attention has been attracted by the swells,since they have important impacts on floating structures including the ships.The separation of wind-waves and swells is a fundamental step for the research on characteristics of swells,also is a hot topic with difficulties.But the generally accepted method of separation,which is two-dimensional spectral method,is hard to use in practice due to lack of data and limitations of observation.Thus the selection of one-dimensional spectral method with high accuracy becomes a key problem in the practical.Using the twodimensional spectral data of three wave stations in the Taiwan Strait,results of separation are obtained.Considering results of separation as well as characteristics of wind-waves and swells in the Taiwan Strait,accuracies of different one-dimensional spectral methods are calculated and compared.The results show that the PM method as a whole is more accurate than other methods.Based on results of separation,a one-dimensional spectrum method is proposed which is a combination of the improved WH method and the PM method.
作者
林伊楠
陶爱峰
李雪丁
郑祥靖
尹硕
Lin Yi’nan;Tao Aifeng;Li Xueding;Zheng Xiangjing;Yin Shuo(Key Laboratory of Coastal Disaster and Defence(Hohai University),Ministry of Education,Nanjing 210098,China;College of Harbor,Coastal and Offshore Engineering,Hohai University,Nanjing 210098,China;Fujian Marine Forecasts,Fuzhou 350003,China;CCCC Third Harbor Consultants Co.,Ltd.,Shanghai 200032,China)
出处
《海洋学报》
CAS
CSCD
北大核心
2019年第11期25-34,共10页
基金
福建省科技计划项目（2018Y0001）
国家自然科学基金项目（51579091,41106001）
关键词
风涌浪分离
台湾海峡
一维谱
涌浪
风浪
separation of wind-wave and swell
Taiwan Strait
one-dimensional spectral
swell
wind-wave
