Chế độ vận chuyển bùn cát vùng đồng bằng sông Cửu Long trong kịch bản phát triển thượng nguồn

Abstract

This paper presents the results of the study of hydrodynamic and sediment transport in the Mekong Delta in the most unfavorable upstream development scenario (when 11 main dams are completed in the Lower Mekong mainstream). This is a research content in the overall problem to determine the cause of erosion and deposition in the coastal area of ​​the Mekong Delta. With the SWAT mathematical modeling approach, Telemac2D and MIKE21 Coupled FM have different detail ratios used to simulate hydrodynamic mode, sediment transport, and morphological changes in a climate year (from 4/2014 - 5/2015) in current conditions and upstream development scenarios. Here, the detailed results of the plain Telemac 2D model are detailed. This is a new study compared to other studies that often use 1D model all over the plain to calculate the hydrodynamic and sediment transfer regime of the Mekong Delta. Results of calculation and analysis of 2D model hydrodynamic hydrological regime.

Keywords: Hydrodynamic regime, Telemac 2D model, upstream development scenario, sediment transport, coastal zone in the Mekong Delta.