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本文选择了杭州湾北部人工干扰较少的漕泾滩地作为风暴沉积标准剖面,于1981年14号特大台风期及其前、后近两年时间,对不同环境下的岸滩地貌与沉积特征进行了较系统的观测、取样和实验室分析,提出了杭州湾风暴沉积的地貌、结构、构造、矿物、孢粉和有孔虫等相标志的基本特征,建立了风暴沉积构造序列。它与常态沉积相间分布构成的韵律性层理,进一步证实了像强台风暴潮这类突然事件,历时虽短,但地质意义重大。
In this paper, we selected the Caojing beach with less artificial disturbance in the northern part of Hangzhou Bay as the storm sedimentary standard profile. During the special typhoon period of 14th and 1981-1918 and the two years before and after it, we carried out the landform and sediment characteristics under different environments Based on the systematic observation, sampling and laboratory analysis, the basic characteristics of the facies, structures, structures, minerals, sporopollen, and foraminifera of the Hangzhou Bay storm deposits are proposed, and the sequence of storm sedimentary structures is established. The rhythmic bedding formed by the sedimentary facies and its normal deposition further confirmed the sudden events such as strong typhoon surges, which lasted for a short time but was of great geological significance.