Details

Autor(en) / Beteiligte

• Chang, Yawen
• Hu, Bill X.
• Xu, Zexuan
• Li, Xue
• Tong, Juxiu
• Chen, Lin
• Zhang, Hanxiong
• Miao, Jinjie
• Liu, Hongwei
• Ma, Zhen

Titel

Numerical simulation of seawater intrusion to coastal aquifers and brine water/freshwater interaction in south coast of Laizhou Bay, China

Ist Teil von

• Journal of contaminant hydrology, 2018-08, Vol.215, p.1-10

Ort / Verlag

Netherlands: Elsevier B.V

Erscheinungsjahr

2018

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• 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. •A model is developed to simulate the seawater intrusion and brine water/fresh water interaction.•The two-dimensional SEAWAT model has a long distance.•The developed is calibrated using field measurements.•Sensitivity study is conducted to investigate the effects of uncertain factors on prediction.•Current freshwater and brine water exploration practice in Laizhou Bay, China is not sustainable.