对近岸海浪非势函数、势函数型缓坡方程的初步探讨  

A PRELIMINARY STUDY ON SEA WAVE PACKET EQUATIONS ON SLOWLY VARYING TOPOGRAPHY

作　　者：晋鹏[1] 谢巨伦[1] 

机构地区：[1]海军南海舰队海洋水文气象中心,广东湛江524001

出　　处：《海洋预报》2004年第4期60-68,共9页Marine Forecasts

摘　　要：针对目前缓坡方程中势函数假设比较多的问题,本文利用二维浅水方程来描述海浪水质点运动的有势假设,采取WKBJ方法推导缓坡方程在缓变地形下的波包方程,对势函数缓坡方程进行修正,以建立更全面更实用的近岸波浪传播计算模式。同时。文中还采用非势函数型模拟波浪传播。There is a common hypothesis for the presently popular mild-slope equations that wave particle motion is irrotational. We take the two-dimension shallow water equation to descript the movement of wave water particles. The potential hypothesis of the wave water particles is brought in and the wave packet equations are deduced by the method of WKBJ. Through this, some modifications are made to the potential mild-slope equation,to build a more integrated calculating model of the wave in shore.

关 键 词：缓坡方程 海浪 波浪传播 WKBJ方法 地形 波包 势函数 初步探讨 浅水方程 水质点 

分 类 号：P731[天文地球—海洋科学] TV742[水利工程—水利水电工程]