中文摘要：

黄河河口三角洲岸线能否处于动态平衡状态,直接关系到河口总侵蚀基准面的变化问题,进而可能对黄河下游的纵剖面调整产生重要影响。本文首先探讨了黄河河口三角洲岸线动态平衡的概念,然后利用有关的实测资料,运用输往外海沙量对比法和来沙量与造陆面积相关法,对河口三角洲岸线处于动态平衡时的河口来沙量进行了分析计算,结果表明,当河口利津站多年平均来沙量维持在3.17亿t时,其河口三角洲岸线则可能处于动态平衡状态。

英文摘要：

That whether the delta coastline of the Yellow River Estuary has the characteristic of dynamic equlibrium or not is directly related to the base level of erosion and the adjust of longitudinal profile of the lower Yellow River.The concept of the dynamic equilibrium of the delta coastline of the Yellow River Estuary is discussed at first.The incoming sediment quantity when the delta coastline is under the dynamic equilibrium is then analyzed by using the measured incoming sediment from Lijin,the land creation of the delta and the sediment flux to the sea.The conclusion shows that the delta coastline of the Yellow River Estuary may be in the dynamic equilibrium when the year-averaged incoming sediment amount from Lijin is about 3.45×10^8 tons.