Response of deep aquifers to climate variability

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 groundw...

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Bibliographic Details
Published in:The Science of the total environment 2019-08, Vol.677 (C), p.530-544
Main Authors: Abdelmohsen, Karem, Sultan, Mohamed, Ahmed, Mohamed, Save, Himanshu, Elkaliouby, Baher, Emil, Mustafa, Yan, Eugene, Abotalib, Abotalib Z., Krishnamurthy, R.V., Abdelmalik, Karim
Format: Article
Language:English
Subjects:
Climate variability
Deep aquifer response
ENVIRONMENTAL SCIENCES
GRACE
Nubian Sandstone Aquifer System
Satellite-based precipitation/soil moisture data
Stable isotopes
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Summary: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 AAP remained negligible (280 km from source areas) and in soil moisture content in areas with shallow (
ISSN:0048-9697
1879-1026
DOI:10.1016/j.scitotenv.2019.04.316