北礵岛附近海域夏季海浪波高-周期分布特征  

The wave height and period distribution characteristics around Beishuang Island in summer

作　　者：黄清泽 宋微[1] 王庆业[1] 陈晓禄 王恒 陈本清[1] HUANG Qing-ze;SONG Wei;WANG Qing-ye;CHEN Xiao-lu;WANG Heng;CHEN Ben-qing(Ningde Marine Environment Monitoring Center,State Oceanic Administration,Ningde 352100 China)

机构地区：[1]国家海洋局宁德海洋环境监测中心站,福建宁德352100

出　　处：《海洋预报》2021年第3期52-58,共7页Marine Forecasts

基　　金：自然资源部东海局青年科技基金(201711)。

摘　　要：利用2016年夏季(6—8月)北礵岛附近海域的实测波浪数据,统计分析该海域海浪的波高特征值,探讨各特征波高与平均波高及有效波高之间的关系,找出较适用于该海域的波高分布、周期分布以及波高和周期的联合分布。结果表明:该海域有效波高的平均值为0.73 m,最大值为2.96 m,平均周期的平均值为4.50 s;各特征波高与平均波高及有效波高的比值普遍小于Rayleigh分布理论值;采用双参数Weibull分布,利用最小二乘法拟合出的波高分布和周期分布较适用于该海域。根据实测波高和周期联合分布结果,与已有的波高和周期理论分布进行对比,发现Longuet-Higgins改进分布和孙孚分布较适用于该海域的波高和周期联合分布特征。With the wave observation in summer,2016 around BeiShuang Island,the wave characteristics were analyzed.We study the relationship between each characteristic wave height and mean wave height(significant wave height),and explore the wave height,period and between joint probability density distribution.Based on the statistical result,the average of significant wave height is 0.73 m,the maximum wave height is 2.96 m,the average period is 4.50 s;Generally,the ratio of each characteristic wave height to mean wave height and significant height is smaller than the theoretical value of Rayleigh distribution.According to the least square method,the results show that two-parameter Weibull distribution is more suitable for wave height and period distribution in this area.Compared the measured wave height and period joint probability distribution with theoretical joint distribution,the improved Longuet-Higgins and the Sunfu distribution fit in with the measured distribution better.

关 键 词：北礵岛 波高分布 周期分布 波高-周期联合分布 

分 类 号：P731.22[天文地球—海洋科学]