抄録
Interaction between estuaries of a pair is tremendously important since evolution of an estuary will significantly impact to other and again. Lack of knowledge about the relation of them could probably result in unexpected consequences to one when implementing certain approaches to exploit, operate, maintain or protect other. The aim of this study is to investigate mutual interaction between Dinh An estuary and Tran De estuary of Mekong River in Vietnam under variations of upstream conditions. River discharge, water level, suspended sediment and salinity concentration were collected in the study area in 2009. Estuarine, Coastal and Ocean Modeling System with Sediment (ECOMSED) was used as an application of three-dimensional numerical model. Then sensitive numerical experiments were performed to figure out response of Dinh An and Tran De estuary to change of upstream discharge rate. We confirmed that redistributed portion of the upstream discharge has high responsibility to mutual interaction of hydrodynamics, salinity intrusion and sediment transport characteristics of both Tran De and Dinh An estuary.
