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.
树枝分叉的方式都一样，树叶的形状普遍相似，河流总是蜿蜒前进，飘落的雪花都是基本的六边形。
Trees branch in a consistent way, leaves take their genetic form, rivers carve a sinuous route, snowflakes fall in their basic hexameter shape.
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