tailieunhanh - Groundwater flow modelling in the central zone of Hanoi, Vietnam

Results calculated by the model seem to indicate that the conceptual hypotheses adopted are reasonable for the modelled domain and period. The simulation allows for calculation of the regional groundwater flow trends. It is also used for assessing the relative importance of the various recharge sources of the shallow aquifer system in Hanoi, and for estimating the interactions between groundwater and the Red River | Groundwater flow modelling in the central zone of Hanoi, Vietnam Simon Jusseret & Vu Thanh Tam & Alain Dassargues Abstract On the basis of a review of the Quaternary sedimentary architecture in the area of Hanoi city (Vietnam), a numerical, deterministic and three-dimensional groundwater flow model has been built for a simulation between 1995 and 2004. The sedimentary architecture has been constructed on the basis of the data from 32 drillings covering the entire Quaternary sequence (but with little sedimentological detail), as well as hydrographical and hydrogeological data. Both steady- and transient-state conditions were tested. Results calculated by the model seem to indicate that the conceptual hypotheses adopted are reasonable for the modelled domain and period. The simulation allows for calculation of the regional groundwater flow trends. It is also used for assessing the relative importance of the various recharge sources of the shallow aquifer system in Hanoi, and for estimating the interactions between groundwater and the Red River. Keywords Vietnam . Conceptual models . Shallow aquifers . Groundwater/surface-water relations . Numerical modelling Introduction Though already studied in relation to subsidence processes (Thu and Fredlund 2000), the hydrogeological setting of the area of the city of Hanoi, Vietnam is still scantily understood. This observation is especially true where basic information related to regional groundwater flow trends, to recharge processes and to the link between the geological setting and the observed groundwater levels is considered. This gap is here bridged through the construction of a physically based groundwater flow model of the shallow aquifer system in the Hanoi city area. This tool is constructed on the basis of a comprehensive sedimentological model (Jusseret, S., Université de Liège, Université Catholique de Louvain; Baeteman, C., Belgian Geological Survey; Dassargues, A., Université de Liège, Katholieke Universiteit .

• Địa Lý
• Groundwater flow modelling in the central zone of Hanoi
• Groundwater flow modelling
• The shallow aquifer system
• Regional groundwater flow trends
• The shallow aquifer system in Hanoi