Leaky Aquifer Models to Simulate the Well Flow in Fractured Aquifers with Linear Interporosity Flow

Ground Water ◽  
2019 ◽  
Vol 57 (5) ◽  
pp. 687-692
Author(s):  
Ferenc Székely ◽  
Péter Szűcs ◽  
Balázs Zákányi
Keyword(s):  
Fractured Aquifers ◽  
Leaky Aquifer

A Method of Calculating the Hydraulic Properties of Leaky Aquifer Systems

1977 ◽  
Vol 8 (2) ◽  
pp. 65-82 ◽  
Author(s):  
Gunnar Gustafson
Keyword(s):  
Hydraulic Properties ◽  
Short Description ◽  
Aquifer Systems ◽  
Leaky Aquifer

This paper describes a method for calculating the hydraulic properties of esker aquifers where a leakage to the aquifer is induced by pumping. The method is an extension of the channel method described in an earlier paper. As an example of the applicability of the method a short description of a performed pumptest is given.

scholarly journals Hydrochemistry and environmental isotopes (18O, 2H, 3H, 3He/4He) of groundwater and floodwater in the great area of Hurghada, Eastern Desert of Egypt

2021 ◽  
Vol 80 (11) ◽  
Author(s):  
M. Wannous ◽  
C. Jahnke ◽  
U. Troeger ◽  
M. Falk ◽  
F. Bauer
Keyword(s):  
Environmental Isotopes ◽  
Eastern Desert ◽  
Hydrochemical Parameters ◽  
Deep Wells ◽  
Fractured Aquifers ◽  
He Isotopes ◽  
Shallow Wells ◽  
The Common ◽  
Faulted Zone

AbstractPorous and fractured aquifers exist in the area of Hurghada, Eastern Desert of Egypt, whose recharge processes through the common flash floods are not identified. Hydrochemical parameters, stable isotopes 18O, 2H and tritium in floodwater and groundwater were applied in the area subject to study. Additionally, He isotopes were investigated in the deep wells in the faulted zone at the Abu Shaar Plateau. 3H activity in all sampled points lies below the detection limit excluding a recent recharge component in groundwater. However, the hydrochemical ratios and the stable isotope signature confirm that the shallow wells and springs (Red Sea Hills group) are being recharged from modern precipitation. The hydrochemical parameters of the deep wells at the Abu Shaar Plateau (coastal plain group) confirm another origin for the ions rather than the modern precipitation. Together with the 18O and 2H values, the Br/Cl ratio of this group confirms the absence of seawater intrusion component and the role of the fault as a hydraulic barrier. These 18O and 2H values deviate from the GMWL confirming an evaporation effect and colder infiltration conditions and reveal strongly a possible mixing with the Nubian Sandstone in the region. The 3He/4He ratio confirms a mantle contribution of 2% from the total He components.

scholarly journals Depth–Sequential Investigation of Major Ions, δ18o, δ2h and δ13C in Fractured Aquifers of the St. Lawrence Lowlands (Quebec, Canada) Using Passive Samplers

Water ◽  
2021 ◽  
Vol 13 (13) ◽  
pp. 1806
Author(s):  
Guillaume Meyzonnat ◽  
Florent Barbecot ◽  
José Corcho Alvarado ◽  
Daniele Luigi Pinti ◽  
Jean-Marc Lauzon ◽  
...  
Keyword(s):  
Stable Isotopes ◽  
Major Ions ◽  
Anthropogenic Activities ◽  
Carbon Sources ◽  
Passive Samplers ◽  
Flow Paths ◽  
Aquifer Heterogeneity ◽  
Fractured Aquifers ◽  
Fractured Carbonate ◽  
Observation Wells

General and isotopic geochemistry of groundwater is an essential tool to decipher hydrogeological contexts and flow paths. Different hydrogeochemical patterns may result from the inherent physical aquifer heterogeneity, which may go unnoticed without detailed investigations gathered from multilevel or multiple observation wells. An alternative to overcome the frequent unavailability of multiple wellbores at sites is to perform a detailed investigation on the single wellbore available. In this perspective, the aim of this study is to use passive samplers to sequentially collect groundwater at depths in long–screened wellbores. Such investigation is carried out for major ions and stable isotopes compositions (δ2H, δ18O, δ13C) at ten sites in the context of fractured carbonate aquifers of the St. Lawrence Lowlands (Quebec, Canada). The information gathered from the calco–carbonic system, major ions and stable isotopes report poorly stratified and evolved groundwater bodies. Contribution of water impacted by anthropogenic activities, such as road salts pollution and carbon sources from C4 vegetation, when they occur, are even observed at the greatest depths. Such observations suggest quick flow paths and efficient mixing conditions, which leads to significant contributions of contemporary groundwater bodies in the fractured aquifers investigated down to depths of about 100 m. Although physical aquifer investigation reported few and heterogeneously distributed fractures per wellbore, hydrogeochemical findings point to at overall well interconnected fracture networks in the aquifer and high vulnerability of groundwater, even at significant depths.

scholarly journals Telegraphic double porosity models for head transient behavior in naturally fractured aquifers

2013 ◽  
Vol 49 (7) ◽  
pp. 4399-4408 ◽  
Author(s):  
D. Hernández ◽  
M. Núñez-López ◽  
J. X. Velasco-Hernández
Keyword(s):  
Transient Behavior ◽  
Double Porosity ◽  
Fractured Aquifers ◽  
Naturally Fractured

scholarly journals Temporal and spatial scaling of hydraulic response to recharge in fractured aquifers: Insights from a frequency domain analysis

2013 ◽  
Vol 49 (5) ◽  
pp. 3007-3023 ◽  
Author(s):  
Joaquín Jiménez-Martínez ◽  
Laurent Longuevergne ◽  
Tanguy Le Borgne ◽  
Philippe Davy ◽  
Anna Russian ◽  
...  
Keyword(s):  
Frequency Domain ◽  
Domain Analysis ◽  
Frequency Domain Analysis ◽  
Spatial Scaling ◽  
Fractured Aquifers ◽  
Temporal And Spatial ◽  
Hydraulic Response

scholarly journals The influence of bedrock hydrogeology on catchment-scale nitrate fate and transport in fractured aquifers

2016 ◽  
Vol 569-570 ◽  
pp. 1040-1052 ◽  
Author(s):  
Alison Orr ◽  
Janka Nitsche ◽  
Marie Archbold ◽  
Jenny Deakin ◽  
Ulrich Ofterdinger ◽  
...  
Keyword(s):  
Fate And Transport ◽  
Catchment Scale ◽  
Fractured Aquifers
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