Numerical Simulation of Storm Surge and Compound Flooding Events in the Minjiang Estuary,China  

作　　者：Yongzhao SUN 

机构地区：[1]Zhejiang Ocean University,Zhoushan 316022,China

出　　处：《Meteorological and Environmental Research》2022年第4期101-111,115,共12页气象与环境研究（英文版）

摘　　要：In this study,a high-resolution storm surge floodplain numerical model was established based on the ADCIRC ocean numerical model,and was used to simulate the storm surge floodplain of typhoon 9608"HERB",and the simulation results of tide level and storm water increase are in good agreement with the observation data.On this basis,the influences of runoff,typhoon path,and typhoon intensity on the floodplain submerged area and depth were discussed.Based on the measured runoff data,10 sets of sensitivity experiments with runoff sizes ranging from 0 to 2.5 times were set up.The experimental results show that the increase of runoff mainly increases the submerged area of the coastal area in the upper reaches of the Minjiang River,but has a small effect on the submerged area of the coastal area in the lower reaches of the Minjiang River and the outer sea mouth.Based on the original typhoon path,8 different deflection paths after the typhoon landed were constructed to carry out sensitivity experiments.The results show that the clockwise deflection of typhoon path of 10°-40°to the south will reduce the submerged area,and the counterclockwise deflection of 10°-30°to the north will increase the submerged area,but the counterclockwise deflection of more than 40°to the north will decrease the submerged area.Three weather systems before and after landing of typhoon center pressure of 955 HPA,935 HPA,and 915 HPA was constructed.The results show that the decrease of typhoon center pressure will significantly increase the submerged area of the entire area.Compared with the air pressure of 975 HPA,the submerged area is increased by about 2 times.

关 键 词：ADCIRC Storm surge Submerged area Minjiang estuary 

分 类 号：P731.23[天文地球—海洋科学] TV122[水利工程—水文学及水资源]