PARAMETRIC STUDIES ON THE ADVANCING INTERFACE IN COASTAL AQUIFERS DUE TO LINEAR VARIATION OF THE FRESH-WATER LEVEL
DSpace at IIT Bombay
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Title |
PARAMETRIC STUDIES ON THE ADVANCING INTERFACE IN COASTAL AQUIFERS DUE TO LINEAR VARIATION OF THE FRESH-WATER LEVEL
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Creator |
MAHESHA, A
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Description |
The transient motion of the freshwater-seawater interface in coastal aquifers due to a constant lowering of freshwater levels at inland locations is simulated using a sharp-interface, finite-element model. The performance of the numerical model is compared with a Hele-Shaw model. The numerical model is then used to perform parametric studies on an advancing interface that considers hypothetical cases over a wider range of possible conditions. The advancement of the interface was found to be dependent on the rate, location, and period of freshwater level variations. A seaward moving freshwater divide is formed by the lowering of the freshwater level. When the advancing interface crosses the seaward moving divide, aggressive intrusion is likely because of the reversed freshwater gradient existing landward of the divide. A safe zone for the freshwater extraction can be determined based on the movement of the interface and the freshwater divide.
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Publisher |
AMER GEOPHYSICAL UNION
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Date |
2011-07-15T06:52:33Z
2011-12-26T12:49:18Z 2011-12-27T05:35:10Z 2011-07-15T06:52:33Z 2011-12-26T12:49:18Z 2011-12-27T05:35:10Z 1995 |
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Type |
Article
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Identifier |
WATER RESOURCES RESEARCH, 31(10), 2437-2442
0043-1397 http://dx.doi.org/10.1029/95WR02040 http://dspace.library.iitb.ac.in/xmlui/handle/10054/4180 http://hdl.handle.net/10054/4180 |
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Language |
en
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