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On seawater encroachment in coastal aquifers
Author(s) -
Lee ChunHian,
Cheng Ralph TaShun
Publication year - 1974
Publication title -
water resources research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.863
H-Index - 217
eISSN - 1944-7973
pISSN - 0043-1397
DOI - 10.1029/wr010i005p01039
Subject(s) - aquifer , seawater , geology , seawater intrusion , hydrology (agriculture) , salt water , groundwater , finite element method , dispersion (optics) , conservation of mass , environmental science , soil science , oceanography , geotechnical engineering , mechanics , engineering , structural engineering , physics , optics
The seawater encroachment in a coastal aquifer is studied by means of a mathematical model. In some aquifers the dispersion amalgamates the encroaching seawater and the discharging freshwater to produce an extensive zone of diffusion. The coupled nonlinear conservation equations of mass and of salt are formulated and solved by the finite element method with the aids of iteration and underrelaxation. The numerical procedure is verified by comparing solutions with known results in the literature. In this study the seawater encroachment in the Biscayne aquifer at Cutler area, Florida, is modeled; the numerical results are in good qualitative agreement with the field data obtained by Kohout.