The sedimentation of the upper section is controlled by the ECS Winter Coast Current, and corresponding grain-size subpopulation is identified by using grain-size vs. standard deviation.

• 因上段的沉积作用主要受控于东海冬季沿岸流；通过粒级-标准偏差分析；提取了相对应的粒度组分或粒度子体；该组分的平均粒径被用来作为研究东亚冬季风演化的替代性指标.