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本文分析了多年的台风和波浪资料得到如下的结果:对崇明东滩有较大影响的台风路径主要有两类:即在浙江中部至长江口登陆的台风和在长江口外侧海域转向北上的台风;佘山岛海洋站百年一遇的最大波高为5.6m;台风期间偏北、东北、东南的强风向均能引起长江口较大的增水现象。 本文还以8310号台风为例,阐明了台风前后的冲淤变化及台风浪塑造的滩地地貌形态。指出东旺沙和北八效高潮滩冲淤甚微,中低潮滩冲刷严重,奚东沙高潮滩冲刷严重,中低潮滩呈微淤状态。波浪对东滩塑造的主要地貌形态有冲刷坑和浪蚀泥坎。
This paper analyzes the results of many years of typhoon and wave data as follows: There are mainly two types of typhoon paths that have a great impact on Chongming Dongtan: typhoon landing in the central part of Zhejiang Province to the Changjiang Estuary and typhoon turning north in the outer estuary of the Yangtze River Estuary ; The maximum wave height at the once-in-hundred-year of the Sheshan Island marine station is 5.6m; during the typhoon, the northerly, northeastern and southeastern strong winds can cause a large increase of water in the Yangtze Estuary. This paper also takes typhoon 8310 as an example to clarify the change of scouring and silting before and after the typhoon and the morphology of beach land formed by typhoon waves. It is pointed out that the East Wangsha and North Habitat Ebb Tidal Flat have little erosion and erosion, the middle and low tide beach erosion seriously, the erosion of Xi Dongsha high tide beach is severe, and the middle and low tide beach is slightly silt. Waves on the shape of the main features of Dongtan Scour pit and erosion of mud.