Articles | Volume 22, issue 6
Hydrol. Earth Syst. Sci., 22, 3473–3491, 2018
Hydrol. Earth Syst. Sci., 22, 3473–3491, 2018

Research article 28 Jun 2018

Research article | 28 Jun 2018

Delineating multiple salinization processes in a coastal plain aquifer, northern China: hydrochemical and isotopic evidence

Dongmei Han and Matthew J. Currell

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Cited articles

An, T. D., Tsujimura, M., Phu, V. L., Kawachi, A., and Ha, D. T.: Chemical Characteristics of Surface Water and Groundwater in Coastal Watershed, Mekong Delta, Vietnam, The 4th International Conference on Sustainable Future for Human Security, SustaiN 2013, Procedia Environ. Sci., 20, 712–721, 2014. 
Andersen, M. S., Jakobsen, V. N. R., and Postma, D.: Geochemical processes and solute transport at the seawater/freshwater interface of a sandy aquifer, Geochim. Cosmochim. Ac., 69, 3979–3994, 2005. 
Appelo, C. A. J.: Cation and proton exchange, pH variations, and carbonate reactions in a freshening aquifer, Water Resour. Res., 30, 2793–2805, 1994. 
Appelo, C. A. J. and Postma, D.: Geochemistry, Groundwater and Pollution, 2 Edn., A. A. Balkema Publishers, Amsterdam, the Netherlands, 2005. 
Bao, J.: Two-dimensional numerical modeling of seawater intrusion in Qinhuangdao Region, MA thesis, Tongji University, Shanghai, China, 2005 (in Chinese with English abstract). 
Short summary
Based on hydrochemical and isotopic analysis, we investigated the potential hydrogeological processes responsible for the increasing groundwater salinity in the coastal aquifer of Yang–Dai River coastal plain, northern China. Seawater intrusion is the major aspect and can be caused by vertical infiltration along the riverbed at the downstream areas, and lateral inflow into fresh aquifer. Geothermal water also makes a significant contribution to increasing the groundwater salinity.