CÁC QUÁ TRÌNH ĐỘNG LỰC VÀ DIỄN BIẾN HÌNH THÁI CỬA ĐẠI VÀ CỬA LỞ TỈNH QUẢNG NGÃI

Abstract

This paper presents results of calculating the effect of river and ocean dynamics processes on erosion and erosion of Dai and Loi estuaries in Quang Ngai province. Mike 21 Couple Model FM, Litpack after being verified, has been applied to simulation of dynamics and seasonal sedimentation/erosion. The results show that waves in the North-East monsoon wind play an important role in controlling the dynamics and erosion processes in Dai estuary and Lo river estuary. Wave – induced currents in this phase can be larger than 1m/s and the area of currents induced by wave are quite large, especially in estuaries. Wave current of the North-East wind play an important role in controlling the erosion and erosion of Dai and Lo estuaries. During the year when the river flow is not strong enough, the deposition of both estuaries will occur and especially in the North-East monsoon season if no major floods occur. Calculations consistent with actual morphological situation have taken place and will be the basis for proposing engineering solutions aimed at stabilizing the estuaries (Dai and Lo) in Quang Ngai Province. This is part of a national independent research project "Scientific research to propose planning and engineering solutions to stabilize Tra Khuc and Ve river in Quang Ngai province"