江苏辐射沙洲北部海域风浪关系分析  

Analysis on wind-wave relationship on north coastal waters of Jiangsu radial sand ridges

作　　者：杨斌[1,2] 冯卫兵[1] 虞丹君[1] 

机构地区：[1]河海大学港口海岸与近海工程学院,南京210098 [2]国家海洋局第二海洋研究所工程海洋学重点实验室,杭州310012

出　　处：《水道港口》2014年第6期578-581,共4页Journal of Waterway and Harbor

基　　金：国家自然科学基金面上项目资助项目(51279055)

摘　　要：根据江苏辐射沙洲北部海域(响水沿海)8个月的实测风与浪的资料统计分析了该区域的风浪关系。首先,统计了该海域的风速分布以及波向分布,然后采用新的风浪判别方法挑选出其中的风浪数据,通过最小二乘法拟合了有效波高、有效波周期和风速的曲线关系。结果表明各个方向的风速分布基本均匀,但波高分布差异较大,能起破坏性作用的波浪主要来自NW、NNW、N、NNE方向。拟合得到的关系式与实测分布符合较好,其中有效波高与有效波周期的关系式计算的结果与实测的平均相对误差较小,可用于该海域的波浪预报及作为附近工程建设的参考。Based on the measured wind and wave data of eight months on the north coastal waters of radial sand ridges in Jiangsu province, the wind-wave relationship of this region was analyzed. Firstly, the distributions of wind speed and direction were statistically obtained. After that, the wind-wave data were picked out according to the new wind-wave distinguished method and the curve relations between significant wave height, significant wave peri-od and wind speed were fitted by least square method. The results show that the distribution of wind speed in all di-rections is almost uniform and does not coincide with the distribution of wave height. The waves induced significant damage are mainly from NW,NNW,N and NNE direction. The fitted formulas are in accordance with the actual dis-tribution. Besides, the average relative error is smaller between the measured values and the results calculated from the formula which reflects the relationship between significant wave height and significant wave period. Therefore the formulas can be used as wind-wave prediction and references of the nearby engineering construction.

关 键 词：风浪关系 响水沿海 最小二乘法 平均相对误差 波浪预报 

分 类 号：TV142[水利工程—水力学及河流动力学] O242.1[理学—计算数学]