Assessment of Environmental Indexes in Alluvial Aquifer Systems

2014 ◽  
pp. 399-403
Author(s):  
Paduano Pasquale ◽  
Fabbrocino Silvia
Keyword(s):  
Alluvial Aquifer ◽  
Aquifer Systems

ASSESSING RECHARGE IN ALLUVIAL AQUIFER SYSTEMS: AN INNOVATIVE APPROACH

2017 ◽  
Author(s):  
Jacob Jarvis ◽  
◽  
B.W. Byars ◽  
Stephanie S. Wong ◽  
Wayne Hamilton ◽  
...  
Keyword(s):  
Alluvial Aquifer ◽  
Innovative Approach ◽  
Aquifer Systems

scholarly journals Assessment of groundwater pollution in relation to heavy metals of the alluvial aquifer of Thriasion Plain (NW Attica)

2017 ◽  
Vol 47 (2) ◽  
pp. 731 ◽  
Author(s):  
D. Kyriazis ◽  
E. Zagana ◽  
G. Stamatis ◽  
F. Fillippidis ◽  
E. Psomiadis
Keyword(s):  
Heavy Metals ◽  
Anthropogenic Activities ◽  
Karst Aquifer ◽  
Alluvial Aquifer ◽  
Human Consumption ◽  
Phreatic Aquifer ◽  
Aquifer Systems ◽  
High Concentrations ◽  
Carbonate Formations ◽  
High Degree

In this study the hydrogeological and hydrochemical characteristics of Thriasion Plain are presented focusing mainly on the presence of heavy metals in the alluvial aquifer. Two main aquifer systems exist in the study area: a) the karst aquifer hosted in the karstified carbonate formations, which structure the bedrock and the margins of the alluvial basin and b) the phreatic aquifer within the Quaternary deposits of the Thriasion Plain. Coastal and submarine groundwater discharges show the direct connection of the aquifers with the sea causing intense salinization in both aquifers. The phreatic aquifer is characterized by high levels of TDS (483 – 13,067 mg/l) and correspondingly high degree of hardness (15.7 to 165.7 odH). High concentrations of Na+, Cl-, SO4 2-, NO3 -, NH4 + and PO4 3- reflect the diverse anthropogenic influences on the aquifer. The strong presence of heavy metals, Cd, Cu, Fe, Mn, Ni, Pb, Sr and Zn has been determined in the most of the samples. Their origin is associated with geogenic factors, such as the occurrences of bauxites, oxides derived from the alteration of rocks, especially shischts, organic matter within the Plio-Pleistocene sediments of the region, as well as with intense pressures from anthropogenic activities. In some cases the groundwater is improper not only for human consumption but also for many other uses.

Groundwater management in urban alluvial aquifer systems: case studies from three continents

2003 ◽  
Author(s):  
Gino Bianchi-Mosquera ◽  
Craig Stewart ◽  
John Sharp Jr ◽  
Bob Kent
Keyword(s):  
Groundwater Management ◽  
Case Studies ◽  
Alluvial Aquifer ◽  
Aquifer Systems

scholarly journals Modeling managed aquifer recharge processes in a highly heterogeneous, semi-confined aquifer system

2019 ◽  
Vol 27 (8) ◽  
pp. 2869-2888 ◽  
Author(s):  
Stephen R. Maples ◽  
Graham E. Fogg ◽  
Reed M. Maxwell
Keyword(s):  
Managed Aquifer Recharge ◽  
Alluvial Aquifer ◽  
Confined Aquifer ◽  
Aquifer Recharge ◽  
Confining Units ◽  
Large Variability ◽  
Aquifer System ◽  
Groundwater Overdraft ◽  
Aquifer Systems ◽  
Coarse Texture

Abstract Widespread groundwater overdraft in alluvial aquifer systems like the Central Valley (CV) in California, USA, has increased interest in managed aquifer recharge (MAR). Like most clastic sedimentary basins, recharge to the productive semi-confined CV aquifer system remains a challenge due to the presence of nearly ubiquitous, multiple confining units (silt and clay) that limit recharge pathways. Previous studies suggest the presence of interconnected networks of coarse-texture sand and gravel deposits that bypass regional confining units over a small fraction of the CV near the American and Cosumnes rivers. Here, variably saturated infiltration and recharge processes were simulated across a domain that includes high-resolution representation of the heterogeneous alluvial geologic architecture in this area. Results show that recharge potential is highly dependent on subsurface geologic architecture, with a nearly 2 order-of-magnitude range of recharge across the domain. Where interconnected coarse-texture recharge pathways occur, results show that these features can (1) accommodate rapid, high-volume MAR and (2) propagate widespread and rapid pressure responses over multi-kilometer distances in the semi-confined aquifer system. For all MAR simulations, results show that the majority of MAR is accommodated by filling unsaturated-zone (UZ) pore volume. Results also show that coarse-texture UZ facies (where present) accommodate the majority of MAR volume during early time, but fine-texture facies ultimately accommodate the majority of the total MAR volume, even for coarse-dominated sites. These findings highlight the large variability of MAR potential across the landscape and demonstrate the importance of fine-texture facies for accommodating MAR in alluvial aquifer systems.

scholarly journals Delineation of recharge areas of the aquifer systems of Corinthia prefecture by the use of isotopic evidence

2017 ◽  
Vol 47 (2) ◽  
pp. 692
Author(s):  
A. Antonakos ◽  
K. Nikas
Keyword(s):  
Spatial Distribution ◽  
Ground Water ◽  
Oxygen Isotopes ◽  
Research Program ◽  
Water Samples ◽  
Alluvial Aquifer ◽  
Isotope Hydrology ◽  
Aquifer System ◽  
Aquifer Systems ◽  
Marine Terraces

The results of a ground water isotopic research program conducted during the period 2004-2008 by an IGME/Hydrogeology Department team in the area of North Korinthian prefecture are presented here. 69 ground water samples were collected during the period 6/2007 and analyzed in the laboratory of Isotope Hydrology of NCSR "Demokritos" for Oxygen isotopes δ18O and Tritium. From the spatial distribution of δ18O, the conglomerate aquifer systems seem to be recharging from their outcrop areas and possibly laterally from the karstic systems that outcrops in higher altitudes. The rest aquifer systems of the area seem to be recharging exclusively from their outcrop areas with the exception of the Vocha coastal alluvial aquifer which seem to be recharging almost totally from waters coming from higher altitudes. According to the spatial distribution of Tritium in both Sikion–Velo and Vrachati– Lechaio areas, low Tritium values are observed which are indicative of the fact that the aquifer system of those areas are recharged from vertical seepage from the riverbeds of Asopos and Rachiani rivers respectively. Contrariwise in the area of Krines–Zevgolatio the high values of Tritium reveal the lateral recharge from the adjacent marine terraces and marl aquifers

scholarly journals Seasonal microbial variation accounts for arsenic dynamics in shallow alluvial aquifer systems

2019 ◽  
Vol 367 ◽  
pp. 109-119 ◽  
Author(s):  
Tianliang Zheng ◽  
Yamin Deng ◽  
Yanxin Wang ◽  
Hongchen Jiang ◽  
Edward J. O’Loughlin ◽  
...  
Keyword(s):  
Alluvial Aquifer ◽  
Aquifer Systems
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