Finite element modeling for assessment of seawater intrusion into coastal groundwater abstractions due to seawater level rise in Thai Binh province
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Abstract
Abstract. Thai Binh province is the most intensively impacted by sea water level rise (SLR). It definitely causes more intensive seawater intrusion into the groundwater abstraction facilities near the coastal line. Finite element modeling of groundwater flow and seawater intrusion by advection-dispersion had been carried out for one coastal groundwater pumping field of Thuy An commune-Thai Thuy district. Seawater intrusion patterns have been obtained by the modeling technique for the present sea water level and three scenarios of SLR. For the present sea water level, the time for which the seawater intrusion with concentration of 0.66g/l reaches the pumping well is estimated to be 30 years, and for the case of high SLR of 1m, the time is much reduced and is estimated to be 16.3 years, which is approximately faster two time than present sea water level.
References
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[3] J. Bear, Dynamics of fluids in porous media. American Elsevier Publishing Company Inc. New York-London-Amsterdam, 1972
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[5] Huyakorn and Pinder (1987). Computational method in subsurface flow. Academic Press.
[6] L. W. Gelhar, C. Welty, K. R. Rehfeldt, A critical Review of Data on Field-Scale Dispersion in Aquifers. Water Resources Research, Vol. 28, No. 7 (1992) 1955.