Numerical simulation of seawater intrusion to coastal aquifers and brine water/freshwater interaction in south coast of Laizhou Bay, China
| Autor: | Zexuan Xu, Hanxiong Zhang, Bill X. Hu, Xue Li, Zhen Ma, Lin Chen, Hongwei Liu, Juxiu Tong, Yawen Chang, Jinjie Miao |
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| Rok vydání: | 2017 |
| Předmět: |
China
Salinity 0208 environmental biotechnology Aquifer Fresh Water 02 engineering and technology 01 natural sciences Brining Water Supply Environmental Chemistry Brine mining Seawater 0101 mathematics Groundwater Water Science and Technology Shore Hydrology geography Hydrogeology geography.geographical_feature_category 010102 general mathematics Water 020801 environmental engineering Bays Environmental science Salts Bay Environmental Monitoring |
| Zdroj: | Journal of contaminant hydrology. 215 |
| ISSN: | 1873-6009 |
| Popis: | Seawater intrusion and brine water/freshwater interaction have significantly affected agriculture, industry and public water supply at Laizhou Bay, Shandong Province, China. In this study, a two-dimensional SEAWAT model is developed to simulate the seawater intrusion to coastal aquifers and brine water/fresh water interaction in the south of Laizhou Bay. This model is applied to predict the seawater intrusion and brine water/freshwater interface development in the coming years. The model profile is perpendicular to the coastal line with two interfaces, freshwater-saline water interface near the shore and inland brine water-saline water-seawater interface. The hydrogeological parameters in the SEAWAT-2000 model are calibrated by the head and salinity measurements. The precipitation infiltration coefficient, boundary conditions and thicknesses of aquifers are studied in a sensitivity analysis. The predicted results indicate that equivalent freshwater head in shallow freshwater-saline water area will decline 2.0 m by the end of the forecasting period, caused by groundwater over-pumping for farmland irrigation. The groundwater head in the brine-saline water area will also decrease about 1.8 m by the end of forecasting period, caused by excessive brine mining. Salinity finally decreases below 105 g/L in the brine area, but increases in other areas and contaminates fresh groundwater resources. |
| Databáze: | OpenAIRE |
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