摘要
渤海东部地区沉积物类型比较复杂，从粗粒级的砾石至细粒级的粘土皆有发育，共有１４种类型。通过综合分析，发现影响沉积物类型空间展布的主要因素是水动力条件。各类沉积物粒级区的展布方向明显与海流方向一致。在渤海海峡，为近东西向，在辽东湾，为近南北向。并且，沉积物的粒度明显与海流的强弱有关。海流强处，粗粒级沉积物发育，海流弱处，细粒好沉积物发育。此外，沉积物的成因和物源也影响其粒级的分布。
The types of sediments in eastern Bohai Sea area are quite complicated.Coarsegrained gravels and very fine clay can be commonly found.There are 14 types of sedi-ments.Through analysis,we find that hydrodynamic condition is the major factor con-trolling grain-size distributions of the sediments.Each distribution is concordant withthe direction of sea current.In the Bohai Strait,the extension of the grain-size distribu-tion is from east to west.And in the Liaodong Bay,it is nearly from south to north。Moreover,the grain sizes of sediments have a close relation with the strength of sea cur-rent。When the sea current is strong,the sediments are quite coarse in grain size,andwhen it is weak,the sediments are quite fine, Of course,there are also other factors con-trolling the grain-size distributions of sediments。
出处
《海洋地质与第四纪地质》
CAS
CSCD
北大核心
1994年第2期47-54,共8页
Marine Geology & Quaternary Geology
关键词
渤海
沉积物
粒度
类型
分布规律
Bohai Sea sediment grain size hydrodynamic condition
