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椒江河口洪季最大浑浊带核部的悬沙分选机制
引用本文:徐海,李伯根.椒江河口洪季最大浑浊带核部的悬沙分选机制[J].海洋通报,2009,28(5).
作者姓名:徐海  李伯根
作者单位:海南省海洋开发规划设计研究院,海南,海口,570105
基金项目:浙江省自然科学基金资助项目(499029);;国家自然科学基金资助项目(40376029)
摘    要:以实测悬沙粒径、流速、含沙量资料为基础,通过悬沙不同粒级组分、中值粒径以及粒度参数的统计,分析椒江河口最大浑浊带核部悬沙粒径分布变化特性。研究表明,悬沙粒径分选主要受物质来源、潮流动力作用下底部部分物质再悬浮和絮凝沉降3个因素的影响。其中第二个因素起主导作用,大潮期比小潮期显著,第三个因素的作用主要发生在涨落憩前后低流速期,并在表层较近底层的水体明显。

关 键 词:椒江河口  最大浑浊带核部  悬沙粒径  絮凝作用  再悬浮  

Size distribution of suspended sediment in nucleus band of turbidity maximum of Jiaojiang River Estuary in wet season
XU Hai,LI Bo-gen.Size distribution of suspended sediment in nucleus band of turbidity maximum of Jiaojiang River Estuary in wet season[J].Marine Science Bulletin,2009,28(5).
Authors:XU Hai  LI Bo-gen
Institution:Second Institute of Oceanography;SOA;Hangzhou 310012;China
Abstract:On the basis of date on particle size,current velocity and sediment concentration,the paper discusses the characteristics of size distribution of suspended sediment by means of the statistics of different size fractions and median diameters and also particle size parameters of suspended sediment.The results show that the size distribution of suspended sediment is mainly influenced by three factors:sediment sources,resuspension of bottom sediment by tidal force,and flocculated settling of suspended sediment....
Keywords:Jiaojiang River Estuary  nucleus band of turbidity maximum  particle size of suspended sediment locculation  resuspension  
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