DELINEATING THE CONDITIONS OF GROUNDWATER OCCURRENCES IN THE AREA SOUTH BALOZA, ROMANA ROAD, NORTH WEST SINAI – EGYPT | ||||
| Journal of Egyptian Geophysical Society | ||||
| Volume 9, Issue 1, 2011, Page 135-143 PDF (1.56 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jegs.2011.384445 | ||||
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| Author | ||||
| M.S.M. Barseem | ||||
| Researcher in Desert Research Center, barseem2002@hotmail.com | ||||
| Abstract | ||||
| Sinai Peninsula represents one of the main prospective areas for energy recourses including water, oil. natural gas, coal and some others. Groundwater is an important natural resource for investment such as south El Teina plain. It lies on low relief and is dominated by extensive sand accumulation alluvial deposits and sabkhas. The average ground elevation ranges from 20 to 31m. above the mean sea level. The Quaternary deposits are exposed in the study area and consist from sand dunes, graded sand, clayey sand, sandy clay and clay. The Pleistocene deposits represent the main aquifer in the eastern part of the study area. It formed of sand, gravely sand, clayey sand, sandy clay and sand with clay intercalations. A total of 18 of Vertical Electrical Sounding (VES) stations were carried out in the study area as a grid pattern. The quantitative interpretation of the field curves revealed that the geoelectrical succession is formed of a number of layers, which are grouped together in three main layers. The first layer is surface layer “A” and layer “B” is dry layer, while the lower layer “C” represents the water bearing formation which consists of sand with clay intercalation. The percentage of clay increases downwards. It is divided into three successive parts (C1, C2, C3). The first part "C1" represents resistivity values ranging from 4.5 33.1 Ohm.m. and a thickness from 2-4m, acting as brackish water zone. The second part "C2" represents resistivity values ranging from 1.99 – 4.1 Ohm.m and a thickness from 13 – 22.5m acting as saline water zone. The last one "C3" represents resistivity values not exceeding 2 Ohm.m., acting as more saline zone. Generally, the depth to water as recorded from the drilled wells and the interpreted from the geoelectrical study ranges between 1.9 m and 5m. Vertically, it is noticed that the salinity of water bearing formation increases downwards in the study area due to the effect of the sea water intrusion. It is recommended to exploit the brackish water layer which is considered as the strategic water supply to the area and has a suitable saturated thickness reaching to about 4m. Thus, wells should not penetrate the saline water to prevent a local rising of interface of brackish – saline water interface due to continuous discharge from water well. The safe yield is demonstrated, according to the hydrological condition in the study area. The wells can be dug by hand where the total depth should not exceed 10m. The total safe yield of every hand dug well varies from 28.28 to 42.42 m3/day. | ||||
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