Seawater intrusion into the Gaza coastal aquifer as an example for water and environment inter-linked actions

S Sorek, V Borisov, A Yakirevich, S Shaath

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

Abstract

The Gaza strip coastal aquifer is under severe hydrological stress due to over-exploitation. Excessive pumping during the past decades in the Gaza region has caused a significant lowering of groundwater levels, altering, in some regions, the normal transport of salts into the sea and reversing the gradient of groundwater flow. The sharp increase in chloride concentrations in groundwater indicates intrusion of seawater and/or brines from the western part of the aquifer near the sea.
Simulations over cross-sections and horizontal planes were conducted concerning the problem of saltwater intrusion in the Khan Yunis portion of the Gaza Strip phreatic coastal aquifer. The latter simulation approach is of particular interest when assessing the effect of different regional pumping scenarios on groundwater level and its quality. After calibrating the models for aquifer parameters and boundary conditions, we investigated predictions resulting from various pumping scenarios using the actual pumping intensity from the year 1985 and extrapolating on the basis of 3.8% annual population growth. Results show a considerable depletion of groundwater level and intrusion of seawater due to excessive pumping.
The saltwater intrusion due to excessive pumping is only one aspect to consider in the inter-linked actions associated with water and environmental disciplines. We show a block diagram depicting the inter-relations between water and environmental disciplines that can be investigated in terms of optimizing the decision-making processes.
Original languageEnglish
Title of host publicationINTERNATIONAL SEMINAR ON NUCLEAR WAR AND PLANETARY EMERGENCIES - 30TH SESSION
Pages299-308
StatePublished - 2004

Publication series

NameScience and Culture Series: Nuclear Strategy and Peace Technology

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