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Hydro-geophysical configuration for the Quaternary aquifer of Nuweiba alluvial fan


Nuweiba is one of Egypt's strategic marine harbors and tourist sites located on the western coast of the Gulf of Aqaba. The absence of freshwater resources in Nuweiba necessitates investigations of local groundwater aquifers. Determination of the hydro-geophysical parameters of the Nuweiba alluvial fan constitutes the basic foundation for optimizing groundwater exploitation over time. Fifteen Schlumberger vertical electrical soundings (maximum AB/2=1,001.5 m), augmented by borehole stratigraphic data, aquifer tests, hydro-chemical analysis, and numbers of measured and/or calculated hydraulic parameters, were carried out in the study area. The fresh to brackish aquifer of Quaternary and pre-Quaternary alluvium sediments was effectively delineated with true resistivity and thickness ranges of 93-125 ohm-m and 0.5-4.5 m, respectively. The western part of the aquifer has a large volume of fresh ground water for extraction and is characterized by a gradual increase in thickness (4.5 m), grain size, transmissivity (174-255 m (super 2) /d), and a possible decrease in total dissolved solids levels (3,100 ppm) and electrical anisotropy (1.10-1.11). Porosity (30.3-30.4%), tortuosity (1.348), formation factor (6) and hydraulic conductivity (58 m/d) are essentially constant across the aquifer. The measured storativity of the aquifer is 2.75X10 (super -2) , which is in accordance with the typical value of the unconfined aquifer at shallow depths.

ISSN: 1083-1363
EISSN: 1943-2658
Serial Title: Journal of Environmental & Engineering Geophysics
Serial Volume: 15
Serial Issue: 2
Title: Hydro-geophysical configuration for the Quaternary aquifer of Nuweiba alluvial fan
Author(s): Khalil, Mohamed H.
Affiliation: Cairo University, Faculty of Science, Geophysics Department, Giza, Egypt
Pages: 77-90
Published: 201006
Text Language: English
Publisher: Environmental and Engineering Geophysical Society, Englewood, CO, United States
References: 52
Accession Number: 2010-066040
Categories: Applied geophysicsHydrogeology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. geol. sketch maps, strat. col., sects.
N28°00'00" - N29°30'00", E34°19'60" - E35°00'00"
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Abstract, copyright, Environmental & Engineering Geophysical Society. Reference includes data from GeoScienceWorld, Alexandria, VA, United States
Update Code: 201036
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