Results 41 to 50 of about 6,742 (166)

Regional Flow Simulation in Fractured Aquifers Using Stress‐Dependent Parameters [PDF]

open access: yesGroundwater, 2011
A model function relating effective stress to fracture permeability is developed from Hooke's law, implemented in the tensorial form of Darcy's law, and used to evaluate discharge rates and pressure distributions at regional scales. The model takes into account elastic and statistical fracture parameters, and is able to simulate real stress‐dependent ...
Preisig, Giona   +2 more
openaire   +4 more sources

A Columbia River Basalt Group Aquifer in Sustained Drought: Insight from Geophysical Methods

open access: yesResources, 2015
Aquifers within the Columbia River Basalt Group (CRBG) provide a critical water supply throughout much of the Pacific Northwest of the United States. Increased pumping has resulted in water level declines in this region. Recharge into this aquifer system
Mark W. Piersol, Kenneth F. Sprenke
doaj   +1 more source

Distribution of aquifer characteristics in different geomorphologic units in a granitic terrain

open access: yesApplied Water Science, 2020
Knowledge of aquifer characteristics is essential for groundwater development and management studies. Detailed hydrological studies were carried out in a granitic terrain consisting of different geomorphologic units to resolve the coverage, performance ...
Ratnakar Dhakate
doaj   +1 more source

Evaluation of vulnerable zones to water pollution in the lower Soummam alluvial aquifer, Bejaia, Algeria

open access: yesWater Policy
Understanding the critical relationship between the Soummam River and its alluvial aquifer is crucial for the protection of this vital water resource. The approach is based on monitoring the spatial and temporal evolution of physico-chemical parameters ...
Nadia Ouyahia   +3 more
doaj   +1 more source

Investigating the Impact of Aquifer Parameters on Carbon Dioxide Dissolution in Saline Aquifers [PDF]

open access: yes, 2018
CO2 injection into geological formations is considered one way of mitigating the increasing levels of carbon dioxide concentrations in the atmosphere and its effect on and global warming. In regard to sequestering carbon underground, different countries have conducted projects at commercial scale or pilot scale and some have plans to develop potential ...
Abbaszadeh, Mohsen, Shariatipour, Seyed
openaire   +1 more source

Uncertainty assessment of aquifer hydraulic parameters from pumping test data

open access: yesApplied Water Science
Data from pumping tests is a noisy process, and therefore, performing the pumping test numerous times will not get the same drawdown values. As a consequence, various pumping experiments lead to different values for aquifer parameter estimates.
Azza M. Bashandy   +2 more
doaj   +1 more source

Weighted joint curve inversion of aquifer parameters in pumping tests with multiple observation wells

open access: yesDesalination and Water Treatment
Accurately calculating hydrogeological parameters is crucial for evaluating and managing groundwater resources. Pumping tests are the primary method for obtaining aquifer parameters, and their accuracy directly impacts the assessment of regional ...
Mingqian Li   +3 more
doaj   +1 more source

Geoelectrohydraulic investigation of the surficial aquifer units and corrosivity in parts of Uyo L. G. A., Akwa Ibom State, Southern Nigeria

open access: yesApplied Water Science, 2017
This study was carried out employing vertical electrical sounding (VES) with Schlumberger electrode configuration. The objectives were to investigate the distribution of the geohydraulic parameters and the corrosivity of the aquifer layer within the ...
Johnson C. Ibuot   +3 more
doaj   +1 more source

Design of a supervised artificial intelligence committee machine to estimate hydrodynamic parameters of confined aquifers [PDF]

open access: yesعلوم زمین خوارزمی
Accurate estimation of hydrodynamic parameters is essential for sustainable aquifer development. Since Theis (1935), the Type Curve Matching Technique (TCMT) has been used to estimate aquifer parameters.
Tahereh Azari
doaj  

Investigation of petrophysical and hydrogeological parameters of the transboundary Nubian Aquifer system using geophysical methods

open access: yesFrontiers in Earth Science
The recent research aims to investigate the petrophysical and hydrogeological parameters of the Nubian aquifer system (NAS) in Northern Khartoum State, Sudan, using integrated geophysical methods, including surface electrical resistivity and geophysical ...
Musaab A. A. Mohammed   +9 more
doaj   +1 more source

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