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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
 
Creator MAHESHA, A
 
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.
 
Publisher AMER GEOPHYSICAL UNION
 
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
 
Type Article
 
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
 
Language en