Author(s): Yanjie Liang, Cuihua An, Qiushi Luo
Linked Author(s): Yanjie Liang
Keywords: Yellow river estuary, tail channel, bankfull discharge, 3 years moving average water amount, flow and sediment collocation coefficient
Abstract: Combined measured data with theoretical analysis, flow and sediment variation and tail channel evolution characteristics in Yellow river estuary and their relationship in Qingshui channel period are studied. The research results showed that Xiaolangdi Reservoir played an important role in sediment detention and reduction of sediment coming in Yellow River estuarine region. The water-sediment regulation changed the annual distribution of flow and sediment. Due to this, the proportion of flood season decreased and the proportion of non-flood season increased. The cross section morphology developed towards deep and narrow, down-cutting of flow effect is obvious. The bankfull discharge is closely related to water amount of flood season where the bankfull discharges increased with flow amount of flood season increasing. The variation trend of 3 years of moving average value of annual water amount and bankfull discharges are same. The bankfull discharge has close relation with 2 years moving average value of flow and sediment collocation coefficient where the former increased and reduced with latter
Year: 2017