外海深水波要素确定方法比较  

Methods for determining open-sea deepwater wave factors

作　　者：李孟国[1] 肖辉[1] 

机构地区：[1]交通运输部天津水运工程科学研究所,工程泥沙交通行业重点实验室,天津300456

出　　处：《水运工程》2010年第7期1-5,共5页Port & Waterway Engineering

摘　　要：在海(近)岸工程中,确定外海深水波要素是一项重要的基础工作。通过3个实例,采用近岸测波站测波资料方法、《海港水文规范》的天气图方法、风场浪场模拟方法对外海深水设计波要素进行了推算,比较了推算结果的差异。研究结果表明,采用近岸测波站测波资料方法与其它两种方法的结果无论是强浪向还是波高都有明显差异。近岸测波站测波资料方法有一定的局限性,天气图方法受人为因素影响比较大,风场浪场模拟方法比较复杂,但相对可信。鉴于深水波要素很重要,有必要使用不同方法进行推算,建议使用风场浪场模拟方法。In coastal and nearshore engineering,it is important and fundamental to determine open-sea deepwater wave factors.Through three examples,three methods,which are based on the data from nearshore wave observation stations（Method 1）,synoptic charts recommended by《Code of Hydrology for Sea Harbour》（Method 2） and wind field and wave field simulations（Method 3） respectively,are used to calculate open-sea deepwater wave factors,with their differences being compared.The study results show that obvious differences between Method 1 and Method 2 or Method 3 exist both in strong wave directions and in wave heights.Method 1 has limitations and drawbacks;Method 2 is apt to be affected by personal factors;While Method 3 is somewhat complicated but relatively credible.With an eye to the importance of deepwater wave factors,it is necessary to calculate them with different methods,and Method 3 is suggested to be used.

关 键 词：外海 深水 设计波要素 SWAN模式 MM5风场模式 

分 类 号：U656.3[交通运输工程—港口、海岸及近海工程]