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The history and fate of the Nubian Sandstone Aquifer springs in the oasis depressions of the Western Desert, Egypt
Springer Science and Business Media LLC - Tập 24 - Trang 395-406 - 2015
Extraction of groundwater for agriculture has resulted in the loss of springs across arid regions of the globe. The history and fate are recorded of the artesian springs of Egypt’s Western Desert, from ancient times to the present, spanning the rise and fall of the great civilisations from the Pharoanic dynasties to Persian, Greek and Roman conquests. The study area includes oases Kharga, Dakhla, ......
Assessing the impact of thermal feedback and recycling in open-loop groundwater heat pump (GWHP) systems: a complementary design tool
Springer Science and Business Media LLC - Tập 21 - Trang 505-514 - 2012
Thermal feedback and thermal recycling in open-loop groundwater heat pump (GWHP) systems occurs when a fraction of the injected water in a well doublet returns to the production well. They reflect two different mathematical representations of the same physical process. Thermal feedback assumes a constant injection temperature, while thermal recycling couples the injection and prod......
The active-layer hydrology of a peat plateau with thawing permafrost (Scotty Creek, Canada)
Springer Science and Business Media LLC - Tập 21 - Trang 201-220 - 2012
The southern margin of permafrost is experiencing unprecedented rates of thaw, yet the effect of this thaw on northern water resources is poorly understood. The hydrology of the active layer on a thawing peat plateau in the wetland-dominated zone of discontinuous permafrost was studied at Scotty Creek, Northwest Territories (Canada), from 2001 to 2010. Two distinct and seasonally characteristic le......
Oxygen, hydrogen, and helium isotopes for investigating groundwater systems of the Cape Verde Islands, West Africa
Springer Science and Business Media LLC - Tập 17 - Trang 1157-1174 - 2009
Stable isotopes (δ18O, δ2H), tritium (3H), and helium isotopes (3He, 4He) were used for evaluating groundwater recharge sources, flow paths, and residence times of three watersheds in the Cape Verde Islands (West Africa). Stable isotopes indicate the predominance of high-elevation precipitation that undergoes little evaporation prior to groundwater recharge. In contrast to other active oceanic hot......
Heat tracing to determine spatial patterns of hyporheic exchange across a river transect
Springer Science and Business Media LLC - Tập 25 - Trang 1633-1646 - 2017
Significant spatial variability of water fluxes may exist at the water-sediment interface in river channels and has great influence on a variety of water issues. Understanding the complicated flow systems controlling the flux exchanges along an entire river is often limited due to averaging of parameters or the small number of discrete point measurements usually used. This study investigated the s......
Identification of groundwater contamination sources using a statistical algorithm based on an improved Kalman filter and simulation optimization
Springer Science and Business Media LLC - Tập 27 - Trang 2919-2931 - 2019
Identification of groundwater contamination sources, as a solution to an inverse problem, is mainly based on simulation optimization methods. However, the establishment and solution of an optimization model are extremely complicated for the inverse problem, where many decision variables need to be identified. Combining simulation optimization methods with other mathematical methods can effectively......
Well productivity controlling factors in crystalline terrains of southeastern Brazil
Springer Science and Business Media LLC - Tập 15 - Trang 471-482 - 2006
Over the last decades, increasing water demands have fostered research to obtain high well yields in crystalline terrains where, besides the intrinsic properties of rocks, the groundwater flow depends on several factors. The depth of the wells, the lithotypes, the presence and thickness of sedimentary coverings and weathered layers, the landforms, the geological structures, and the effects of tect......
Book review: Estimating Groundwater Recharge, by Richard W Healy (Cambridge University Press, 2010)
Springer Science and Business Media LLC - Tập 19 - Trang 1451-1452 - 2011
Assessment of the level of activity of advective transport through fractures and faults in marine deposits by comparison between stable isotope compositions of fracture and pore waters
Springer Science and Business Media LLC - Tập 30 - Trang 813-827 - 2022
Assessment of the level of activity of advective transport through faults and fractures is essential for guiding the geological disposal of radioactive waste. In this study, the advective flow (active, inactive) of meteoric water through fractures is assessed by comparing stable isotopes (δD and δ18O) between fracture and pore waters obtained from four boreholes in marine deposits in the Horonobe ......
Sensitivity of the Gravity Recovery and Climate Experiment (GRACE) to the complexity of aquifer systems for monitoring of groundwater
Springer Science and Business Media LLC - Tập 26 - Trang 933-943 - 2017
The Gravity Recovery and Climate Experiment (GRACE) satellite mission is aimed at assessment of groundwater storage under different terrestrial conditions. The main objective of the presented study is to highlight the significance of aquifer complexity to improve the performance of GRACE in monitoring groundwater. Vidarbha region of Maharashtra, central India, was selected as the study area for an......
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