Author(s): Nguyen Ngoc Nam; Pham Anh Tuan; Dang Thi Hong Hue
Linked Author(s): Nguyen Ngoc Nam
Keywords: Estuaries; Erosion; Deposition; Sediment; Waterway lane
Abstract: Cua Sot is one of the most important estuaries of Ha Tinh province, where trade, exchange, the export of agricultural products, seafood with other province in the country. The estuary is also important waterways to fishing ports of Ha Tinh in the strategic development of fishing offshore of Ha Tinh province. Recently, Cua Sot channel is being filled, narrow fairways dry up, affecting large vessels from anchorage, storm shelter and annual maintenance dredging was needed. To address that, localities are going intended to build a number of groin and embankments and the measures to dredging but also still being disturbed about the durability of embankments and the ability of filling sedimentation quickly. Therefore, the local managers have difficulty in finding measures to overcome this risk. Aiming at positive measures, finding the causes and mechanism to change the channel flow, finding a solution basis to propose appropriate measures for the sustainable regulation, the data were collected as historical data, field survey data relating to topographical and hydrological data and so on. Physical model of tidal dynamics, sediment transport were calibrated and verified and used as a tool for the study of dynamics and sediment transport of Cua Sot estuary. The experiment results with different scenarios are presented in this papers and the clarification of the causes and mechanism of sediment transport in Cua Sot estuary was demonstrated.
Year: 2014