Question

Write at least two sentences to explain the difference between the Ghyben-Herzgerg equation vs the Glover approach to locate the saline intrusion interface.

Answer 1

◆ In general, the Ghyben-Herzberg theory it specifically states that the thickness of the freshwater lens is directly related to the elevation of the water table above sea level.

◆ The Ghyben–Herzberg ratio states that, for every unit of fresh water in an unconfined aquifer above sea level, there must be forty unit of fresh water in the aquifer below sea level.

● Glover [10] provided a two-dimensional approach, which was subsequently improvement over Ghyben-Herzgerg equation.Delineating the mixing zone with this method is more challenging than using the original approach of Ghyben-Herzgerg equation.

● since it depends more on hydrogeological data collected. In many areas, because of the rough
physiographical characteristics and the limited number of observation wells, so application of two dimensional approach is not easy.

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