Comparison of the Causes of Erosion-Deposition between Yellow River, Yangtze River and Mekong River Subaqueous Deltas II: Comparative Analysis

The estuary delta is an area where human economic activities are active and natural ecological environment fragile. With global change the intensification of activities, coastal seabed erosion around world becoming more serious. In this paper, we used Delft 3D numerical simulation to compare hydrodynamic effects sediment transport paths in Yellow River (river-controlled type), Yangtze (tidal type) Mekong wave East Asian monsoon area, analyzed causes accumulation landform distribution three different types subaqueous deltas. This study finds Delta has experienced varying degrees at estuary, but its still dominated by deposition; ensured stability shoreline under influence artificial reinforcement, (water depth: 0–15 m) a state all year round; occurs both delta. Additionally, only analyzing deposition within range resuspended sediment, changes properties entire could be recognized. research results can not helpful analyze whether river will lead type influence, also provide powerful scientific support for protection environment, geological safety disaster prevention.