【摘要】 通过对浙江象山皇城海滩地形地貌的现场调查,对比分析了1211号台风"海葵"登陆象山前后海滩剖面的蚀积变化,探讨了该处海滩对1211号台风"海葵"的响应特征。研究结果表明,在2012年8月台风"海葵"过境期间,皇城海滩从总体上看,剖面表现为上冲下淤,平面表现为北冲南淤,其后滨沙丘蚀积变化剧烈,海滩沉积物总收支变化不大。皇城海滩不同岸段剖面对台风"海葵"的响应特征不同,切线段以淤积为主,过渡段、遮蔽段以侵蚀为主,且遮蔽段在三个岸段中变化最小,台风响应强度最弱。台风路径走向、岬湾海滩相对台风的走向和岬角突出程度是其对台风响应强度的重要影响因素。更多还原

【Abstract】 By comparing the data obtained in two field investigations on the sandy beach of Huangcheng,Xiangshan,before and after 1211 typhoon"HaiKui ",erosion / accumulation change on beach profiles is analysed,and the response feature on the beach is discussed. The result shows that in general,beach profiles were scoured on upper part and deposited on lower part,and the beach was scoured in the north and deposited in the south. In addition,backshore dune changes dramatically,and the total balance of beach sediment changes little,during the HaiKui’s landing in August 2012. Typhoon response characteristics of different coastal sections of Huangcheng beach are different: tangent zone’s main characteristic is accretion,and transition zone and shadow zone ’s main characteristics are erosion. Shadow zone changes the least and has the weakest typhoon effect strength in three coastal zones. The trend of typhoon track,headland-bay beaches’ trend related to typhoon and prominent level of cape are the important factors of response intensity to the typhoon.更多还原