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DOI	10.1016/j.scitotenv.2019.04.316
	Response of deep aquifers to climate variability
	Abdelmohsen, Karem 1,2; Sultan, Mohamed 1; Ahmed, Mohamed 3; Save, Himanshu 4; Elkaliouby, Baher 5; Emil, Mustafa 1; Yan, Eugene 6; Abotalib, Abotalib Z.1,7; Krishnamurthy, R., V 1; Abdelmalik, Karim 5
通讯作者	Sultan, Mohamed
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2019
卷号	677 页码:530-544
英文摘要	There is a general agreement that deep aquifers experience significant lag time in their response to climatic variations. Analysis of Temporal Gravity Recovery and Climate Experiment (GRACE), Soil Moisture and Ocean Salinity mission (SMOS), satellite altimetry, stable isotopic composition of groundwater, and precipitation and static global geopotential models over the Nubian Sandstone Aquifer System (NSAS) revealed rapid aquifer response to climate variability. Findings include: (1) The recharge areas of the NSAS (Northern Sudan Platform subbasin) witnessed a dry period (2002-2012), where average annual precipitation (AAP) was modest (85 mm) followed by a wet period (2013-2016; AAP: 107 mm), and during both periods the APP remained negligible (<10 mm) over the northern parts of the NSAS (Dakhla subbasin); (2) the secular trends in terrestrial water storage (TWS) over the Dakhla subbasin were estimated at -3.8 +/- 1.3 mm/yr and + 7.8 +/- 1 mm/yr for the dry and wet periods, respectively; (3) spatial variations in TWS values and phase are consistent with rapid groundwater flow from the Northern Sudan Platform subbasin and Lake Nasser towards the Dakhla subbasin during the wet period and from the lake during the dry period; and (4) networks of densely fractured and karstified bedrocks provide preferential pathways for groundwater flow. The proposed model is supported by (1) rapid response in groundwater levels in distant wells (>280 km from source areas) and in soil moisture content in areas with shallow (<2 m) groundwater levels to fluctuations in Lake Nasser surface water, and (2) the isotopic composition (O, H) of groundwater along the preferred pathways, consistent with mixing of enriched (Lake Nasser water or precipitation over Sudan) and depleted (NSAS fossil water) end-members. Findings provide new insights into the response of large, deep aquifers to climate variability and address the sustainability of the NSAS and similar fossil aquifers worldwide. (C) 2019 The Authors. Published by Elsevier B.V.
英文关键词	Climate variability Deep aquifer response Nubian Sandstone Aquifer System GRACE Satellite-based precipitation/soil moisture data Stable isotopes
类型	Article
语种	英语
国家	USA ; Egypt
开放获取类型	hybrid, Green Submitted
收录类别	SCI-E
WOS记录号	WOS:000468191200050
WOS关键词	WESTERN DESERT ; GROUNDWATER LEVELS ; REGIME SHIFTS ; GRACE ; WATER ; RECHARGE ; SYSTEM ; AFRICA ; FIELD ; TIME
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/218699
作者单位	1.Western Michigan Univ, Geol & Environm Sci, Kalamazoo, MI 49008 USA; 2.NRIAG, Geodynam Dept, Cairo 11421, Egypt; 3.Texas A&M Corpus Christi, Dept Phys & Environm Sci, Corpus Christi, TX 78412 USA; 4.Univ Texas Austin, Ctr Space Res, Austin, TX 78759 USA; 5.Ain Shams Univ, Fac Sci, Geol Dept, Cairo 11566, Egypt; 6.Argonne Natl Lab, Environm Sci Div, 9700 S Cass Ave, Argonne, IL 60439 USA; 7.Natl Author Remote Sensing & Space Sci, Geol Dept, Cairo 1564, Egypt
推荐引用方式 GB/T 7714	Abdelmohsen, Karem,Sultan, Mohamed,Ahmed, Mohamed,et al. Response of deep aquifers to climate variability[J],2019,677:530-544.
APA	Abdelmohsen, Karem.,Sultan, Mohamed.,Ahmed, Mohamed.,Save, Himanshu.,Elkaliouby, Baher.,...&Abdelmalik, Karim.(2019).Response of deep aquifers to climate variability.SCIENCE OF THE TOTAL ENVIRONMENT,677,530-544.
MLA	Abdelmohsen, Karem,et al."Response of deep aquifers to climate variability".SCIENCE OF THE TOTAL ENVIRONMENT 677(2019):530-544.