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《Journal of Hydroelectric Engineering》 2018-01
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Influence of typhoon moving directions on storm surges at Dongtou fishing port

SUN Zhilin;JI Hanqing;FANG Shibiao;YAO Zhongzhi;HAO Haoyu;ZHANG Dejun;Ocean Collage,Zhejiang University;  
This paper presents an analysis of four historical typhoons moving in different directions to demonstrate the effects of typhoon moving direction on the storm surge at the Dongtou fishing port.We use Delft3D to simulate the storm surges around Dongtou Island and compare the calculated tidal levels with the field data observed at six nearby gauge stations,showing an average error less than 15 cm in the calculations of astronomical tides.The results show that a typhoon that passes by east generates a storm surge characterized by a primary peak(in the middle) and two secondary peaks(on both sides),while a southern typhoon often causes a storm surge of single peak type that is thus the strongest.For a western typhoon,the storm surge manifests a fluctuating increase that is featured with a trend close to that of an astronomical tide and a peak occurring at the time about the typhoon arrives the nearest location.A northern typhoon develops a similar fluctuating trend in the storm surge.However,it has little influence on the fishing port,though it could have multiple peaks in water rising at each astronomical climax and generate water falling at astronomical low tide.
【Fund】: 国家基金重大研究计划项目(91647209);; 国家重点研发计划(2016YFC0402305-02)
【CateGory Index】: P731.23
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