山东半岛东部靖海湾及邻近海域表层沉积物分布和输运特征分析

Sediment Grain Size Characteristics and Transport Patterns in the Jinghai Bay and its Adjacent Waters,Shandong Peninsula

通过对靖海湾及邻近海域表层沉积物进行取样,结合水文观测资料,通过粒度分析、"粒径趋势"分析以及表层沉积物输运通量等的计算,探讨该区域沉积物的分布特征及运移趋势。结果表明:研究区沉积物主要有粉砂、黏土质粉砂、砂质粉砂3种类型,其中粉砂和黏土质粉砂占绝大部分;沉积物输运趋势分析表明在泽库半岛前岛村南侧海域,沉积物整体有向岬角汇聚的趋势,鹅嘴西南侧海域,沉积物在-5m等深线以浅呈现顺岸的净输运趋势,-5m以深呈现向岸的输运趋势;表层沉积物输运通量分析表明该海域的日平均单宽输沙通量较小,总体上呈现远岸大于近岸的趋势,净输沙方向为沿涨潮方向向岸输沙。

Based on the 35 stations investigated within the Jinghai Bay and its adjacent waters, combined with hydrological observations, sediment grain size characteristics, grain size trend analysis method and net transport patterns, the characteristics of the surface sediments and the net fransport patterns in this area were analyzed. In results, the sediments in this area could be divided into three categories as silt, clayey silt and sandy silt, which mainly covered by silt and clayey silt. The transport trend of sediment in the study region could be divided into two areas. The sediments converged to the promontory in the south of Zeku Peninsula. Meanwhile, the net transport of sediments above --5 m was alongshore and it was shoreward below --5 m. The net transport flux per day was not very large and increased towards the offshore area.