从珠江口沉积物粒度参数特征分析泥沙来源及其运移趋势  

Sediment Sources and Transport Tendency based on Grain-size Parameters in Estuary of the Pearl River

作　　者：江四义[1] 郑兆勇[1,2] 

机构地区：[1]国家海洋局南海分局,广东广州510300 [2]中国海洋大学地球科学学院,山东青岛266003

出　　处：《中山大学学报（自然科学版）》2008年第z1期126-129,共4页Acta Scientiarum Naturalium Universitatis Sunyatseni

基　　金：中国气象局气候变化专项基金资助项目(CCSF2007-24)

摘　　要：珠江口表层沉积物类型复杂,但可归并为11种基本类型。通过其粒度参数分析,追溯本河口区域泥沙来源是以径流和落潮流下泄泥沙为主,海域来沙为辅。泥沙运移的基本形式是以悬移运动为主要,大量落淤在河口湾的泥沙经过淤落、搅动、掀起等形式的区域内部调整搬运,形成了珠江口海区的大面积悬移质细粒泥沙沉积。泥沙运移的基本趋势是在科氏力影响下及海岸流作用下向珠江口西岸运移。The sediments are basically grouped into 11 types the in Pearl River estuary,even though they are complex. The grain-size parameter analysis showed that the sediments mainly originated from runoff and ebb current discharged sands,and were supplemented by sea sands.The suspended sand loads were transported and deposited in the Pearl River estuary.And further internal adjustment handling of stirring and lifting developed a large amount of fine-grain sediments.Finally,the sediments were basically tranported towards the west bank of the Pearl River estuary under Coriolis force and the coast flow.

关 键 词：珠江口 粒度参数 沉积物 运移 

分 类 号：P343.5[天文地球—水文科学] P942[天文地球—地球物理学]