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Hydrochemistry and environmental isotopes of spring water and their relation to structure and lithology identified with remote sensing methods in Wadi Araba, Egypt

Wannous, Manal; Theilen-Willige, Barbara; Troeger, Uwe; Falk, Marianne; Siebert, Christian; Bauer, Florian ORCID iD icon 1
1 Karlsruher Institut für Technologie (KIT)

Abstract:

Springs located at the historical sites of Wadi Araba (Eastern Desert of Egypt) and emerging from the escarpments of the Northern and Southern Galala Plateaus were investigated. A combination of methods, including hydrochemistry, stable and radioisotope composition, and structural analyses based on satellite data, provided information about the structure of the subsurface and the derived groundwater flow paths. Satellite images reveal karst features within the northern plateau, e.g. conical landforms. Karstic caves were documented along both escarpments. Chemical analysis of floodwater from Wadi Araba indicates higher concentrations of terrestrial salts compared to floodwaters from central and southern parts of the desert. δ18O and δ2H signatures in spring waters resemble those of floodwater and fall on the global meteoric water line, confirming their fast infiltration with minor influence of evaporation. The aquifer feeding the springs of the Northern Galala Plateau has low retention and the springs dry out quickly, even after heavy rainfall. Contrastingly, 3H activities in springs emerging from the Southern Galala Plateau refer to much slower subsurface passage. ... mehr


Verlagsausgabe §
DOI: 10.5445/IR/1000135928
Veröffentlicht am 28.07.2021
Originalveröffentlichung
DOI: 10.1007/s10040-021-02343-x
Scopus
Zitationen: 9
Web of Science
Zitationen: 8
Dimensions
Zitationen: 7
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Nukleare Entsorgung (INE)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 09.2021
Sprache Englisch
Identifikator ISSN: 1431-2174, 1435-0157
KITopen-ID: 1000135928
HGF-Programm 38.04.04 (POF IV, LK 01) Geoenergy
Erschienen in Hydrogeology journal
Verlag Springer
Band 29
Heft 6
Seiten 2245–2266
Vorab online veröffentlicht am 04.06.2021
Nachgewiesen in Dimensions
Web of Science
Scopus
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