珠江河口地区风暴潮增水过程数值模拟  

Numerical Simulation of Storm Surge Process in Pearl River Estuary

作　　者：刘睿哲 朱庆勇[1] 倪培桐[2] LIU Ruizhe;ZHU Qingyong;NI Peitong(School of Engineering,Sun Yat-sen University,Guangzhou 510275,China;Guangdong Research Institute of Water Resources and Hydropower,Guangzhou 510635,China)

机构地区：[1]中山大学工学院,广东广州510275 [2]广东省水利水电科学研究院,广东广州510635

出　　处：《广东水利水电》2018年第4期6-10,共5页Guangdong Water Resources and Hydropower

摘　　要：1713号台风"天鸽"是53 a来对港、珠、澳地区影响最大的台风。通过对"天鸽"风暴潮的模拟,验证了MIKE21模型和Holland风场构建的天文潮以及二维风暴潮模模型的可靠性,在此基础上探究了珠江河口在不同路径、不同中心气压以及不同最大风速半径下的风暴潮作用的增水极值。结果表明,不同风暴潮路径对登陆沿岸不同验潮测站的影响不同,其中珠江河口东南角较易受到风暴潮影响且风暴潮的沿岸增水极值较大;当风暴潮中心气压下降10 h Pa时,珠江河口处各测站增水极值增幅大约为2%至3%;最大风速半径减小则对距离风暴潮行进路线较远的地区影响较大。NO.1713 typhoon“Hato”has made the biggest damage on the region of Hong Kong,Zhuhai and Macao over last 53 years.After the simulation of the“Hato”storm surge and the reliability verification of the astronomical tide model and the two-dimensional storm surge model which is established by the MIKE21 model and the Holland wind field,this paper discusses the maximum surges variation which is caused by the impact of the change of the route,the maximum wind speed radius and the central pressure of the storm surge.The results show that different storm routes have different influence on the tidal stations along the coast.Meanwhile the south-east part of the Pearl River estuary is more sensitive to the storm surge and the coast which was strike by the storm vertically has larger maximum surges.The maximum surges of the Pearl River estuary increases by 2%to 3%when the central pressure declined every 10hPa.The decline of the maximum wind speed radius has larger influence on the region where far from the storm route.

关 键 词：珠江河口 风暴潮 台风路径 最大风速半径 中心气压 

分 类 号：P444[天文地球—大气科学及气象学]