Long term evolution model of delta

The evolution of natural delta morphology is controlled by river flow and sediment process and human activities, and its morphological characteristics in turn affect the upstream river morphology and ecological environment. The current research has made clear that the changes of river flow, sediment concentration and sediment gradation have an important impact on the evolution of delta morphology, but there is still a lack of clear understanding of the long-term cumulative effect of river morphology adjustment on Delta development. This study focuses on the long-scale evolution process of River Delta under runoff and tide dynamics. Based on Delft 3D software, a coupling generalized model of hydrodynamic sediment transport topographic change is constructed to explore the influence of channel section morphology on the evolution process and morphological pattern development of rivers and deltas entering the sea. This data is based on the long-time scale dynamic geomorphic numerical model of the characteristic river channel with a width of 1000m and a depth of 6m. It provides the basis for the analysis and discussion of the article.