南流江水下三角洲沉积物类型特征及其分布规律  

CHARACIERISTICS AND DISTRIBUTION OF SEDIMENT TYOES IN THE NANLIUJIANG RIVER DELTA SUBMARINA AREA

作　　者：梁文[1] 黎广钊[1] 刘敬合[1] 

机构地区：[1]广西海洋研究所,北海536000

出　　处：《海洋科学》2001年第12期34-37,共4页Marine Sciences

基　　金：国家自然科学基金资助项目49766013号

摘　　要：通过综合分析 ,发现影响沉积物类型空间排列的主要因素是水动力条件。各类沉积物粒级分区的排列方向明显与海流方向一致。基本上为近南北向排列 ,与落潮方向一致。并且 ,沉积物粒度明显与海流的强弱有关。强海流区 ,粗粒级沉积物发育 ;弱海流区 ,细粒级沉积物发育。此外 。Through analysis, We find that hydrodynamic condition is the major factor controlling grain size range of the sediments. Each range is concordant with the direction of sea current. The extension of the grain size range is from south to north on the whole and it is concordant with the direction of the ebb tide. Moreover ,the grain sizes of sediments have a close relation to the strength of sea current. When the sea current is strong, the sediments are quite coarse in grain size, and when it is weak, the sediments are quite fine. Besides, sources of sediment substance also control the grain size distributions of sediments.

关 键 词：南流江水下三角洲 沉积物 粒度 水动力 类型 分布 

分 类 号：P737.121[天文地球—海洋地质] P736.21[天文地球—海洋科学]