摘要
基于杭州湾实测潮汐资料,对杭州湾年最高潮位时空变化、成因及影响因素进行了系统分析。结果表明:杭州湾年最高潮位呈波动式抬升,上升速率为0.95-1.84 cm/a,且湾顶大于湾中,湾中大于湾口;年最高潮位出现在8月的次数最多,其次是7月、9月和6月;乍浦站年最高潮位中受台风暴潮影响的占59%,出现在大潮期的占95%;治江缩窄一方面引起天文潮高潮位抬高,另一方面引起增水增大;20世纪80年代以来,影响杭州湾的台风强度增大和不利台风路径增多也引起增水增大;平均海平面上升加剧了杭州湾年最高潮位的抬升。
Based on the measured tidal data in Hangzhou Bay,the spatiotemporal variations,causes and influencing factors of the annual maximum high tide levels in Hangzhou Bay were systematically analyzed.The results showed that the annual maximum high tide levels in Hangzhou Bay rose in a fluctuating manner,with a rising rate of 0.95-1.84 cm/a,the raise value of the top of the bay was larger than the middle of the bay and the middle of the bay was larger than the mouth of the bay.The annual maximum high tide levels occurred most frequently in August,followed by July,September and June.In the annual maximum high tide levels at Zhapu station,59%of them were affected by typhoon surge,and 95%of them were in spring tides.On the one hand,contracted river for regulation in the Qiantang estuary caused the elevation of the high tide level of astronomical tide,on the other hand,it caused the increase of storm surge.In the past 30 years,the increase of typhoon intensity and adverse typhoon path for Hangzhou Bay also caused the increase of storm surge and the elevation of the annual maximum tide level in Hangzhou Bay was exacerbated by rising mean sea level.
作者
潘存鸿
郑君
吴修广
陈刚
PAN Cunhong;ZHENG Jun;WU Xiuguang;CHEN Gang(Zhejiang Institute of Hydraulics and Estuary,Hangzhou 310020,China;Zhejiang Provincial Key Laboratory of Estuary and Coast,Hangzhou 310020,China)
出处
《河海大学学报(自然科学版)》
CAS
CSCD
北大核心
2021年第5期394-400,418,共8页
Journal of Hohai University(Natural Sciences)
基金
国家重点研发计划(2018YFC0407506)
国家自然科学基金(51779228)。
关键词
年最高潮位
治江缩窄
风暴潮增水
海平面
杭州湾
annual maximum high tide level
contracted river for regulation
storm surge
sea level
Hangzhou Bay