Numerical study on the morphological evolution of the Qingshuigou channel on the Yellow River Delta in response to changing water and sediment regimes

Abstract The Qingshuigou channel is the longest in modern Yellow River Delta since its diversion 1976. To explore morphological evolution of on response to changing water and sediment regimes, we applied two-dimensional hydro-sediment-morphodynamic coupling model simulate characteristics bed erosion deposition estuary different regimes. results demonstrate that regarding seasonal difference year, during flood season larger than non-flood season, former accounts for 88% annual deposition. On a long-term scale, river becomes considerable deposits rapidly with high discharge concentration.