THE IMPACT OF SUBMERGED MATERIALS IN QUANG TRI WATERS

Abstract

Submerging dredged materials requires a delicate balance between economic imperatives and environmental protection. This study employed the MIKE model to simulate water current, wave, water level, and dredged material dynamics in Quang Tri waters. By modeling various scenarios based on material volume and season, the study elucidated the propagation, diffusion, and transport patterns of dredged materials within the aquatic environment. Simulation results indicate distinct distributions of dredged material across surface, middle, and bottom layers. Seasonal variations primarily influenced material propagation along prevailing water currents. The seabed deposition of dredged material exhibited an elliptical pattern aligned with the northwest -southeast and northeast - southwest axes. Notably, scenarios involving 1.5 and 3.0 million m3 of dredged material posed no discernible threats to the Con Co marine reserve or coastal ecosystems, including beaches and aquaculture areas.