干旱区生态环境知识资源中心(Arid): Fault zone hydrogeology in arid environments: The origin of cold springs in the Wadi Araba Basin, Egypt

Arid

DOI	10.1002/hyp.14176
	Fault zone hydrogeology in arid environments: The origin of cold springs in the Wadi Araba Basin, Egypt
	Khalil, Mahmoud M.; Hamer, Kay; Pichler, Thomas; Abotalib, Abotalib Z.
通讯作者	Khalil, MM (corresponding author), Minia Univ, Geol Dept, Fac Sci, El Minia 61519, Egypt.
来源期刊	HYDROLOGICAL PROCESSES
ISSN	0885-6087
EISSN	1099-1085
出版年	2021
卷号	35 期号:5
英文摘要	The role of faults in controlling groundwater flow in the Sahara and most of the hyper-arid deserts is poorly understood due to scarcity of hydrological data. The Wadi Araba Basin (WAB), in the Eastern Sahara, is highly affected by folds and faults associated with Senonian tectonics and Paleogene rifting. Using the WAB as a test site, satellite imagery, aeromagnetic maps, field observations, isotopic and geochemical data were examined to unravel the structural control on groundwater flow dynamics in the Sahara. Analysis of satellite imagery indicated that springs occur along structurally controlled scarps. Isotopic data suggested that cold springs in the WAB showed a striking similarity with the Sinai Nubian aquifer system (NAS) water and the thermal springs along the Gulf of Suez (e.g., delta O-18 = -8.01 parts per thousand to -5.24 parts per thousand and delta D = -53.09 parts per thousand to -31.12 parts per thousand) demonstrating similar recharge sources. The findings advocated that cold springs in the WAB represent a natural discharge from a previously undefined aquifer in the Eastern Desert of Egypt rather than infiltrated precipitation over the plateaus surrounding the WAB or through hydrologic windows from deep crystalline basement flow. A complex role of the geological structures was inferred including: (1) channelling of the groundwater flow along low-angle faults, (2) compartmentalization of the groundwater flow upslope from high-angle faults, and (3) reduction of the depth to the main aquifer in a breached anticline setting, which resulted in cold spring discharge temperatures (13-22 degrees C). Our findings emphasize on the complex role of faults and folds in controlling groundwater flow, which should be taken into consideration in future examination of aquifer response to climate variability in the Sahara and similar deserts worldwide.
英文关键词	arid hydrology fault zone hydrogeology groundwater flow Gulf of Suez Nubian aquifer system remote sensing Sahara stable isotopes
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000655496700049
WOS关键词	NUBIAN SANDSTONE AQUIFER ; CENTRAL EASTERN DESERT ; GROUNDWATER-FLOW ; SINAI PENINSULA ; SUEZ RIFT ; CARBONATE AQUIFER ; TECTONIC CONTROLS ; INTEGRATED FIELD ; FLASH FLOODS ; EVOLUTION
WOS类目	Water Resources
WOS研究方向	Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/350509
作者单位	[Khalil, Mahmoud M.] Minia Univ, Geol Dept, Fac Sci, El Minia 61519, Egypt; [Khalil, Mahmoud M.; Hamer, Kay; Pichler, Thomas] Univ Bremen, Inst Geosci, Bremen, Germany; [Abotalib, Abotalib Z.] Univ Southern Calif, Viterbi Sch Engn, Los Angeles, CA 90007 USA; [Abotalib, Abotalib Z.] Natl Author Remote Sensing & Space Sci, Div Geol Applicat & Mineral Resources, Cairo, Egypt
推荐引用方式 GB/T 7714	Khalil, Mahmoud M.,Hamer, Kay,Pichler, Thomas,et al. Fault zone hydrogeology in arid environments: The origin of cold springs in the Wadi Araba Basin, Egypt[J],2021,35(5).
APA	Khalil, Mahmoud M.,Hamer, Kay,Pichler, Thomas,&Abotalib, Abotalib Z..(2021).Fault zone hydrogeology in arid environments: The origin of cold springs in the Wadi Araba Basin, Egypt.HYDROLOGICAL PROCESSES,35(5).
MLA	Khalil, Mahmoud M.,et al."Fault zone hydrogeology in arid environments: The origin of cold springs in the Wadi Araba Basin, Egypt".HYDROLOGICAL PROCESSES 35.5(2021).