摘要
淤泥质潮滩与沙质海滩在组成物质和水动力特征方面具有本质差异,潮流对泥沙的输移起着主导作用。本文剖析一个水柱在一个潮周期中的速度变化过程及其产生的冲淤效应,阐述了缓淤积性潮滩S型剖面形成的机理和几种变异情况,并举实例说明。本文还提出了发育完全的淤积性潮滩的地貌分带。
There are essential differences of material and hydrodynamic features both in the mudflat and sand beach.The tidal current plays a leading role in sediment transport.Analysing the motion of an unit water column and its scour-deposition in a tidal cycle,the paper expounds the mechanism on development of a S-like profile of a slight accumulated tidal flat,a convex upward pattern for intense accum ulated flat,and a concave upward pattern for intense erode flat as well as some variations.Some measured profiles are given.The geomorphological zonation of a well developed tidal flat is also presented.
出处
《华东师范大学学报（自然科学版）》
CAS
1988年第2期61-68,共8页
Journal of East China Normal University(Natural Science)
关键词
潮滩
憩流
挟沙力
沉降滞后
冲刷滞后
冲蚀坑洼
蚀余岗
垅
盐沼
tidal flat
slack tide
sediment-laden capacity
settling lag scouring lag
scour pits
relict hillock
salt marsh
