By Mohamed, A.M.O.
There are many pressing difficulties in arid land hydrogeology and it truly is those concerns that are tackled during this quantity on wilderness environments. The UAE-Japan symposia supply a venue for the trade of workmanship, confronting such difficulties as purification, utilization and administration of groundwater, the review and safeguard of sustainable water assets, and soil enhancement recommendations for moisture regulate in arid lands. The desire is higher knowing of dryland setting, mixed with leading edge strategies and applied sciences, will give a contribution to the greening of wilderness lands.
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Additional info for Arid Land Hydrogeology: In Search of a Solution to a Threatened Resource: Proceedings of the Third Joint UAE-Japan Symposium on Sustainable GCC Environment and Water Resources (EWR2006), 28 - 30 January 2006, Abu Dhabi, UAE (Volume IV in DARE series)
The well field with about 60 wells is operated since 1995 near Kalbha. The total draft is about 6 million m3/year. 3 Initial heads MODFLOW requires an initial guess for the head values in the model. A proper initial guess for the starting heads of the simulation can reduce the required run time significantly. The initial head values are also used to calculate the drawdown values. A stable piezometric surface head may be obtained by the steady state simulation or available ground water level of the study domain.
Attempts at deep exploration in the western region have been fraught with difficulty and campaigns have been few and largely unsuccessful to date with very high groundwater salinities and low well yields. Only one GWAP well intersected Um er Radhuma limestone; thickness of 200 m between depths of 600–800 m below ground with a TDS content of 185,000 mg/l and a small yield of 12 m3/hr. Further investigation into this aquifer system, however, is warranted. The Simsima Cretaceous limestone Formation occurs in the Eastern Structural domain region and crops out as outliers near the Al Ain – Dubai highway.
In the Eastern region, the Lower Fars formed a sedimentary basin or trough that was filled with sediments of the Upper Fars Formation. Few wells have penetrated the Lower Fars and the top of the Formation has largely been mapped by use of vertical electrical soundings geophysical techniques. 2 Bedrock and structural aquifers Bedrock aquifers occur throughout the Emirate and are largely carbonate deposits laid down in shallow marine seas. Their potential as aquifers has not yet been fully proven; the aquifers occur generally at significant depth and have not been explored or exploited anywhere near to the same extent as the unconsolidated aquifers described above.