1156测波仪资料的外方向谱计算方法研究  

A STUDY ON CALCULATION METHOD OF OUTER DIRECTIONAL SPECTRUM BY TYPE 1156 BUOY SYSTEM

作　　者：隋世峰[1] 黎满球[1] 朱良生[1] 章家琳[2] 

机构地区：[1]中国科学院南海海洋研究所,广东广州510301 [2]国家海洋局第二海洋研究所,浙江杭州310012

出　　处：《热带海洋学报》2003年第5期25-32,共8页Journal of Tropical Oceanography

基　　金：国家自然科学基金资助项目(49976005);国家科技专项(2001DIA50041);中国科学院知识创新工程项目(CXJJ 28)

摘　　要：基于海浪的外观特征提出了一个用1156测波仪资料计算海浪外方向谱的方法,并与S4测波仪同步资料的海浪外方向谱进行了比较,得出1156外方向谱、S4外方向谱和1156方向谱三者主波向的一致性在80%以上。两种外方向谱的谱图也极为相似。1156海浪外方向谱80%能量展角大于S4海浪外方向谱80%能量展角,这可能与1156测波仪受海面风和表层流影响较大有关。分析说明1156与S4的海浪外方向谱其代表性都是可以肯定的,且方法简单、实用,很有必要与直接观测的外方向谱进行比较,以确定这种计算方法的实用价值。Based on the apparent characteristics of sea wave, a method for computing outer wave directional spectrum by data from Type 1156 Buoy System is put forward, and its results are compared with those computed by synchronous data from S4ADW directional wave instrument, and above 80% agreement of major wave direction among outer directional speetra by Type 1156, that by S4ADW and directional spctra by Type 1156 is obtained. Both outer directional spectrum diagrams are very similar. The extending angle of 80% energy for the outer directional spectrum by Type 1156 is larger than that by S4ADW, which may be due to the effects of sea surface wind and current on the Type 1156. It is apparent that the outer directional spectra by Type 1156 and S4ADW are both representative. The method is simple and practical, and is necessary to be compared with the outer directional spectra by observation, so that the practical value of this calculation method can be determined.

关 键 词：外方向谱 外方向分布函数 外观波向 计算方法 验证 

分 类 号：P731.22[天文地球—海洋科学]