摘要
本文通过对黄河三角洲埕岛海域146个表层样的粒度分析,表明该区有5种沉积物类型,以砂质粉砂为主体,呈斑块状分布,极细砂与粗粉砂是沉积物的主要粒级,普遍分选差。运用"粒径趋势"分析的方法,分析探讨了埕岛海域表层沉积物净输运趋势。研究区的沉积物的净输运趋势大致以12 m水深为界,深水区沉积物的净输运趋势向岸,12 m以浅海域的沉积物具有离岸的净输运趋势,说明深水区沉积物受冬季风浪作用向岸运移作用显著,12 m以浅海域的沉积物受夏季风浪作用离岸运移作用显著,沉积物运移的季节变化已成为研究区海域沉积物净运移的主要控制因素。
Using the data of grain size analysis of 146 sediment samples in the Chengdao sea area and grain size trend analysis method,the surface sediments characteristics and the net transport patterns in this area were been studied.Results showed that the Chengdao sediments could be divided into five categories as sandy silt,silt,silty sand,sandy mud and mud,which mainly covered by sandy silt and distributed in patch.The sediments in study area that the chief aggregate classes were very fine sand and coarse silt were generally poor sorting.The net transport patterns in the study region could be divided two areas along the water depth around 12 m.The net transport of sediments in the deep area that water depth above 12 m were shoreward which ruled by the winter transport.Meanwhile,the net transport of sediments below 12m of water depth were offshore which ruled by the summer transport.The leading control factor of net sediment transport is the transform of seasonal transport.
出处
《中国海洋大学学报（自然科学版）》
CAS
CSCD
北大核心
2011年第1期151-154,共4页
Periodical of Ocean University of China
基金
海洋公益科研专项(201005009)资助
关键词
埕岛海域
底质特征
净输运趋势
Chengdao sea area
the sediment characteristics
net sediment transport patterns
