基于SWAN模式的2种网格对嵊泗海域海浪模拟的比较研究  

Research on Wave Simulation Comparisons of Shengsi Waters Based on Two Kinds of Grids Using Swan Wave Model

作　　者：宗芳伊 魏来[1] 吴克俭[1] 

机构地区：[1]中国海洋大学,山东青岛266100

出　　处：《海洋湖沼通报》2014年第4期10-18,共9页Transactions of Oceanology and Limnology

基　　金：海洋公益性行业科研专项经费项目(201205017-3)资助

摘　　要：采用WRF模型构造的再分析风场作为海浪模式的驱动场,由于嵊泗位于长江、钱塘江的交会处,附近海域地形复杂,不可避免的会产生折射、变浅、绕射、波浪破碎、非线性波相互作用等近岸物理过程,因此采用第三代海浪数值模式SWAN。本文采用矩形网格和加密的三角网格对2012年4月嵊泗列岛海域波浪场进行模拟,并将模拟的有效波高与实测数据进行验证和误差指标分析,分析结果显示,2种网格模拟的海浪场的效果都很好,其中三角网格的模拟效果更好,可以进一步提高海域有效波高模拟的准确度,可以更精确的刻画复杂的地形。In this paper, reanalysis wind field constructed by WRF model was used as driving field of the wave model, since Shengsi locates at the confluence of the Yangtze River and the Qiantang River and has complex terrain surrounding waters, it will inevitably produce some nearshore processes, such as refraction, shallowing, diffraction, wave breaking, nonlinear wave interactions, etc. Thus, the thirdgeneration wave model SWAN was used. In this paper, rectangular mesh and intensive triangular mesh will be introduced to simulate the wave field of Shengsi surrounding waters in April 2012, compare the simulated significant wave heights with observed data and analyze the error index. It was implied that the simulation of wave field based on two kinds of grids was dependable, while triangle grid was better in improving the accuracy of simulation and describing the complexity of the terrain accurately.

关 键 词：SWAN 矩形网格 非结构的三角网格 

分 类 号：P731.2[天文地球—海洋科学]