Universität zu Köln

Yousif, Mohamed ORCID: 0000-0002-7847-9707, van Geldern, Robert ORCID: 0000-0003-2786-2893 and Bubenzer, Olaf (2016). Hydrogeological investigation of shallow aquifers in an arid data-scarce coastal region (El Daba'a, northwestern Egypt). Hydrogeol. J., 24 (1). S. 159 - 180. NEW YORK: SPRINGER. ISSN 1435-0157

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Abstract

Hydrogeological investigations in arid regions are particularly important to support sustainable development. The study area, El Daba'a in northwestern Egypt, faces scarce water resources as a result of reported climate change that particularly affects the southern Mediterranean coast and increases stress on the local groundwater reserves. This change in climate affects the area in terms of drought, over-pumping and unregulated exploration of groundwater for irrigation purposes. The hydrogeological investigation is based on a multidisciplinary data-layer analysis that includes geomorphology, geology, slope, drainage lines, soil type, structural lineaments, subsurface data, stable isotopes, and chemical analyses. The study area contains Pleistocene and middle Miocene marine limestone aquifers. Based on lithology and microfacies analysis, the middle Miocene aquifer is subdivided into two waterbearing zones. The area is affected by sets of faults and anticline folds, and these structures are associated with fractures and joints that increase permeability and facilitate the recharge of groundwater. Stable isotope data indicate that groundwater of both the Pleistocene and middle Miocene aquifers is recharged by modern precipitation. The high salinity values observed in some groundwater wells that tap both aquifers could be attributed to leaching and dissolution processes of marine salts from the aquifers' marine limestone matrix. In addition, human activities can also contribute to an increase in groundwater salinity. A future water exploration strategy, based on the results from the multidisciplinary data-layer analysis, is proposed for the area. The derived scientific approach is transferable to other arid coastal areas with comparable conditions.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Yousif, Mohamed UNSPECIFIED orcid.org/0000-0002-7847-9707 UNSPECIFIED van Geldern, Robert UNSPECIFIED orcid.org/0000-0003-2786-2893 UNSPECIFIED Bubenzer, Olaf UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-286308
DOI:	10.1007/s10040-015-1308-4
Journal or Publication Title:	Hydrogeol. J.
Volume:	24
Number:	1
Page Range:	S. 159 - 180
Date:	2016
Publisher:	SPRINGER
Place of Publication:	NEW YORK
ISSN:	1435-0157
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language OSMOTIC COEFFICIENTS; CLIMATE-CHANGE; ISOTOPE-RATIO; HEKMA AREA; GROUNDWATER; WATER; THERMODYNAMICS; ELECTROLYTES; ORIGIN; GIS Multiple languages Geosciences, Multidisciplinary; Water Resources Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/28630