河口区径流对台风暴潮影响研究  

Effect of Runoff on Typhoon Storm Surge in Estuaries

作　　者：孙志林[1] 黄森军 焦建格 聂会 Sun Zhilin;Huang Senjun;Jiao Jiange;Nie Hui(Institution:Port,Coastal and Offshore Engineering,Zhejiang University,Hangzhou 310058,China;Zhejiang University of Water Resources and Electric Power,Hangzhou 310018,China)

机构地区：[1]浙江大学港口海岸与近海工程研究所,杭州310058 [2]浙江水利水电学院,杭州310018

出　　处：《天津大学学报（自然科学与工程技术版）》2017年第5期519-526,共8页Journal of Tianjin University：Science and Technology

基　　金：国家自然科学基金资助项目(40776007);浙江省重大科技专项重点社会发展资助项目(2009C03008-1);国家自然科学基金重大研究计划资助项目(91647209)~~

摘　　要：台风暴潮-径流相互作用增大河口台风暴潮位,从而增大台风暴潮灾害.本文基于FVCOM模式建立了河口及附近海域的台风暴潮数值模型,并以9711台风和0608台风为风-气压场来源.依据台风期间的实测径流量过程Q(t),设计了4个径流过程q(t),并与q(t)=0时进行对比,讨论了台风暴潮模拟中考虑上游径流的必要性;研究了浙江省南部沿海椒江、欧江、飞云江和鳌江河口区径流和台风暴潮的相互作用,并分析了径流量变化对海门、温州、瑞安和鳌江观测站台风暴潮位以及各河流口门内最大台风暴潮位包络线的影响.结果显示:径流量越大,观测站的台风暴潮位增量越大且台风暴潮位的最大增量出现在台风登陆后;9711台风期间椒江台风暴潮位受径流的影响较瓯江更显著;0608台风期间飞云江台风暴潮位受径流影响较鳌江更显著.本文研究成果为河口台风暴潮防灾减灾提供有价值的参考.Typhoon storm surge-runoff interaction will increase the storm tide level,thus aggravating the storm surgedisasters in estuaries.In this paper,a storm surge model was developed with wind-pressure field derived from typhoon9711and typhoon0608based on FVCOM.Four schemes with different time series runoffs q(t)were designed accordingto the observed time series runoff process Q(t).The necessity for considering the effect of upstream runoff on stormsurge simulation was investigated,referring to the case of q(t)=0.The interactions between runoff and typhoon stormsurge in Jiaojiang Estuary,Oujiang Estuary,Feiyunjiang Estuary and Aojiang Estuary were discussed.In addition,the effects of runoff variation on storm tide level at observed stations(Haimen,Wenzhou,Ruian and Aojiang)and onthe maximum storm tide level along channel were presented.Results show that the maximum storm tide level incrementsof stations appeared after typhoon landfall and increased with increasing runoff input.For typhoon9711,theeffects of runoff on storm surge of Jiaojiang were more obvious than those on Oujiang;for typhoon0608,the stormsurge in Feiyunjiang was influenced more significantly than that in Aojiang.The results obtained in this study will providea valuable reference for the prevention and mitigation of storm surge disaster in estuaries.

关 键 词：径流 台风暴潮 河口 9711台风 0608台风 

分 类 号：P732[天文地球—海洋科学]