Author(s): Trieu Anh Ngoc; Shreedhar Maskey; Kittiwet Kuntiyawichai; Ann Van Griensven
Linked Author(s):
Keywords: Lower Mekong Delta; Sediment transport; Sea level rise and Mike
Abstract: As well-known of the largest flat low-lying and fertile delta in the world, the Mekong River Delta experiences annual widespread flooding where mainly provides primary sources for about 17 million habitants, of which, suspended sediment load play an important role in carrying contaminants, nutrients, etc. . used for agriculture cultivation as well as important factors for geomorphological phenomena in rivers. In current decades, the changes of water availability under climate change are entailing the changes of hydrodynamic on rivers, influencing to sediment transport, but observed sediment data is lacking. Moreover, after natural floodplains, the sediment deposition have replaced by dense river systems as resulting in floodplain compartments protected by embankments. The cropping seasons depend on flood events and sediment associated nutrient input for agricultural productivity. However, sediment quantitative information and these influences on changes of hydrodynamic pay less attention. This study is aimed to investigate impacts of water availability and sea level rise on sediment transport under anticipated scenarios. Therefore, the hydrodynamic model and sediment transport model–Mike 11 are applied for simulating sediment load processes on the Mekong Rivers. The simulated results of various upstream discharges and sea level rise based on anticipated scenarios will indicate the variability of sediment transport. The findings of outcomes are the concrete basis in contribution to propose sustainable measures for improving positive effects and restricting negative impacts on cultivation, guiding Mekong River Delta towards aspired benefits.
Year: 2014