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Mixed analytical and numerical modelling of an oceanic peninsula using the Dupuit-Ghyben-Herzberg approach

Abstract:

Analytical and numerical models were applied to an oceanic peninsula to estimate the volume of available freshwater and the amount of water that could be pumped without depleting the resource. Analytical models were used at regional scale, whereas numerical models were applied in a small domain to obtain aquifer parameters. The results showed that even small pumping rates of 10% of the annual net recharge would have important impacts on the thickness of the water lens, which can be even higher during dry years, when the annual recharge may be half of the multiple-year long term average value.