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DOI	10.1016/j.earscirev.2020.103392
	What can the GRACE seasonal cycle tell us about lake-aquifer interactions?
	Abdelmohsen, Karem; Sultan, Mohamed; Save, Himanshu; Abotalib, Abotalib Z.; Yan, Eugene
通讯作者	Sultan, M (corresponding author), Western Michigan Univ, Geol & Environm Sci, Kalamazoo, MI 49008 USA.
来源期刊	EARTH-SCIENCE REVIEWS
ISSN	0012-8252
EISSN	1872-6828
出版年	2020
卷号	211
英文摘要	Lake-aquifer interactions have been the subject of investigation and debate for decades. Traditional investigation methods include measurement of water flux across the groundwater-surface water interface, application of heat and environmental tracer methods, conducting numerical simulations of the water flow, and mass balance-based approaches. We first review, evaluate and describe the different approaches that have been applied for examining lake-aquifer interactions and propose an additional complementary approach. While the leakage from lakes and its slow movement through porous media (laminar flow) is well characterized by existing methods, modeling the rapid and turbulent flow through preferred pathways (faults/karst) remains a challenging task. To better understand the nature, and the full scale, of the lake aquifer interactions, and using Lake Nasser and the underlying Dakhla subbasin of the Nubian Sandstone Aquifer System (NSAS) in the Western Desert of Egypt (area: 0.66 x 10(6) km(2)) as a test site, we examine, model, and correlate temporally and spatially, the variations in Gravity Recovery and Climate Experiment terrestrial water storage (GRACE(TWS)) solutions, with precipitation, lake levels, area, and water volume. We review current GRACE applications in hydrology and present our novel approach. Findings include: firstly, large seasonal fluctuations (peak: Nov./Dec.; trough: July/Aug.) in Lake Nasser's surface water levels (average annual fluctuations: from 3.7 m to 7.5 m), area (average area: 3622 km(2) but up to 4530 km(2)), and volume (annual average: 13.4 km(3), and up to 34 km(3)) are observed throughout years 2006 to 2015. These fluctuations are accompanied by an increase in GRACE(TWS) (average: 50 +/- 13 mm/yr, up to 77 +/- 18 mm/yr) over Lake Nasser and by a progression of a front of increasing GRACE(TWS) values (> 50 +/- 13 mm) away from the lake reaching distances of up to 700 km some 3 to 5 months following peak lake level periods. The areas witnessing the seasonal increase in GRACE(TWS) display a progressive increase in phase and decrease in amplitude with distance from the lake. Secondly, the negligible precipitation over the Dakhla subbasin cannot account for the observed seasonal GRACE(TWS) patterns and neither can the leakage signal from Lake Nasser. Thirdly, overall similarities in the distribution of GRACE(TWS) seasonal spatial patterns are observed. During high lake level periods (e.g., Dec. 2007; Feb. 2015) additional, and more distant, areas from Lake Nasser saw increases in GRACE(TWS) and vice versa during low lake level periods (e.g., July 2006; Aug. 2010). These observations are consistent with Lake Nasser being the main source of modern recharge for the Dakhla subbasin and suggest a new conceptual model for the subbasin: a slow groundwater flow through a porous matrix and a rapid groundwater flow along a network of faults, fractures, and karst topography across the matrix. We suggest that the proposed conceptual model for the interaction between Lake Nasser and the Dakhla subbasin could be applicable to aquifers of similar geologic, climatic, and hydrologic settings worldwide and that approaches similar to those advocated here could be used to investigate the validity of this suggestion.
英文关键词	GRACE(TWS) seasonal cycle Lake level seasonal fluctuations Rapid groundwater flow in preferred pathways
类型	Review
语种	英语
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:000599839400002
WOS关键词	WESTERN DESERT ; WATER STORAGE ; MIDDLE-EAST ; GROUNDWATER DEPLETION ; REGIME SHIFTS ; VARIABILITY ; SEEPAGE ; BASIN ; EVOLUTION ; AFRICA
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/348810
作者单位	[Abdelmohsen, Karem; Sultan, Mohamed; Abotalib, Abotalib Z.] Western Michigan Univ, Geol & Environm Sci, Kalamazoo, MI 49008 USA; [Abdelmohsen, Karem] Natl Res Inst Astron & Geophys NRIAG, Geodynam Dept, Cairo 11421, Egypt; [Save, Himanshu] Univ Texas Austin, Ctr Space Res, Austin, TX 78759 USA; [Abotalib, Abotalib Z.] Natl Author Remote Sensing & Space Sci, Geol Dept, Cairo 1564, Egypt; [Yan, Eugene] Argonne Natl Lab, Environm Sci Div, Argonne, IL 60439 USA
推荐引用方式 GB/T 7714	Abdelmohsen, Karem,Sultan, Mohamed,Save, Himanshu,et al. What can the GRACE seasonal cycle tell us about lake-aquifer interactions?[J],2020,211.
APA	Abdelmohsen, Karem,Sultan, Mohamed,Save, Himanshu,Abotalib, Abotalib Z.,&Yan, Eugene.(2020).What can the GRACE seasonal cycle tell us about lake-aquifer interactions?.EARTH-SCIENCE REVIEWS,211.
MLA	Abdelmohsen, Karem,et al."What can the GRACE seasonal cycle tell us about lake-aquifer interactions?".EARTH-SCIENCE REVIEWS 211(2020).