摘要
采用TOMAWAC模型模拟近岸40年的波浪要素。波谱计算采用36个方向,模拟波周期范围为1.5~29 s,并对极值波况进行分析。统计了1979—2018年间有效波高的年极值,算得百年一遇的有效波高,发现百年一遇波高由北往南总体呈现增大趋势:渤海和黄海的百年一遇的波高不超过10 m;东海百年一遇的波高在15~22 m之间;南海北部百年一遇波高的范围比较大,靠近台湾部分最大达到了22 m,海南岛西部较小,在10~15 m之间。引用SET值相关指标对极端波浪的发生次数、持续时间和强度进行分析,发现渤海、黄海北部、台湾海峡以及南海西北部极端事件频繁发生,平均每年有5~7次,台湾岛西南部极端事件的平均历时最大,达到了32 h。
The TOMAWAC model is used to simulate the wave climate in the coastal area for 40 years.The wave spectrum is calculated in 36 directions,and the simulated wave period ranges from 1.5 s to 29 s.And the extreme wave conditions are analyzed.The annual maximum significant wave height in 1979-2018 is calculated,then the 100-year-period significant wave height is calculated,and it is found to increase from north to south.In Bohai Sea and Yellow Sea it is less than 10 m,while that in East China Sea is less than 15-22 m.Meanwhile,the range of wave heights in the northern part of the South China Sea is relatively large,with the maximum near Taiwan reaching 22 m,while that in the western part of Hainan Island is small,ranging from 10 m to 15 m.The frequency,duration and intensity of extreme waves are analyzed by using SET values.It is found that extreme events occur frequently in the Bohai Sea,the northern Yellow Sea,the Taiwan Strait and the northwestern South China Sea,with an average frequency of 5-7 times a year.The average duration of extreme events in the southwestern part of Taiwan Island is the longest,reaching 32 hours.
作者
徐佳丽
时健
张弛
郑金海
张继生
陈天
XU Jiali;SHI Jian;ZHANG Chi;ZHENG Jinhai;ZHANG Jisheng;CHEN Tian(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;EDF(China)Holding Ltd.,Beijing 100001,China)
出处
《海洋工程》
CSCD
北大核心
2019年第6期94-103,共10页
The Ocean Engineering
基金
国家杰出青年科学基金项目(51425901)
国家自然科学基金(41706087,51879096)
江苏省研究生科研与实践创新计划项目(KYCX18_0613)
中央高校基本科研业务费专项资金资助(2018B653X14)
