由于泥沙的沉积，河床抬升，水深变小，水流速度场在整个堆积扇上明显增大，并在三角洲前缘出现明显的绕岛环流和河流分叉现象。
The water depth reduced due to deposition, the water flow velocity upon the alluvial sector increased obviously and at the front of the delta exists currents around the sand bar.
在坳陷湖盆，河道、湖岸线和缓坡对有利于岩性圈闭发育的三角洲前缘砂体具有明显的控制作用。
The rival channel, lake shoreline and gentle slope are quite important for controlling the delta-front sand-body of lithologic trap in a depression basin.
大庆油田三角洲前缘席状砂解剖发现，即使在外前缘相带，席状砂仍然具明显的水道特征。
It is found by dissecting the delta front sheet sands in Daqing Oilfield that though it is at outer front facies belt, there exists obvious characteristics of a water course in sheet sands.
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