(2009) Geological model of the Yellow River basin for the long-term groundwater simulation. Bull. Geol. Surv. Japan, vol. 60 (1/2), p. 117-130, 12 fi gs.
Abstract:To simulate long-term groundwater flow within the whole catchment areas of the Yellow River basin, a hydrogeological model is formulated. This model includes the impermeable basement defi ned by the brittle-plastic transition, formulation of the depth-dependency of permeability of the upper crust, major fault distribution, and an isopach map of the Quaternary System. The Yellow River basin is characterized by fi ve stepwise altitude areas; the Tibet Plateau, the northeastern slope of the Tibet Plateau, the northwestern Ordos Plateau, the southeastern slope of the Ordos Plateau and the North China Basin. The structure was formed by tectonics, particularly by the rigid Ordos Micro-Plate block. When adequate permeability and local groundwater consumptions are assumed, the results of the simulation are well consistent with the records of the dramatic decline of the water table since 1960s, indicating the excess groundwater consumptions as the major factor for the decline. This simulator enables to forecast the future shortage of groundwater in the Yellow River basin.