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Articoli di riviste sul tema "Aquifers"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 25 luglio 2025

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1

Wu, Ming-Chang, and Ping-Cheng Hsieh. "Influence of nonuniform recharge on groundwater flow in heterogeneous aquifers." AIMS Mathematics 8, no. 12 (2023): 30120–41. http://dx.doi.org/10.3934/math.20231540.

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<abstract><p>The composition of soils in aquifers is typically not homogeneous, and soil layers may be cracked or displaced due to geological activities. This heterogeneity in soil distribution within aquifers affects groundwater flow and water level variations. In the present study, we established a two-dimensional (2D) mathematical model that considers the influence of surface recharge on groundwater flow in heterogeneous sloping aquifers. By considering temporal variations in surface recharge, slope angle and aquifer heterogeneity, the simulated results are expected to better re

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2

Hera-Portillo, África de la, Julio López-Gutiérrez, Beatriz Mayor, et al. "An Initial Framework for Understanding the Resilience of Aquifers to Groundwater Pumping." Water 13, no. 4 (2021): 519. http://dx.doi.org/10.3390/w13040519.

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Groundwater stored in aquifers experiences a wide variety of natural, induced and/or anthropogenic disturbances. Among them, groundwater extraction is the main disturbance that affects most of the aquifers in the world. Aquifer’s resilience, understood as the potential of the aquifer to sustain disturbances on the long term and to guarantee essential qualities and functions, provides a key tool when assessing sustainable groundwater management alternatives. The aim of this work is to illustrate an aquifer resilience framework that can support groundwater sustainable management. A theoretical f

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3

Maulana, Fivry Wellda, and Arie Noor Rakhman. "Aplikasi Geofisika Terpadu Untuk Penelitian Potensi Air Tanah Aquifer Batu Pasir Di Alasombo, Indonesia." Jurnal Multidisiplin Madani 2, no. 1 (2022): 511–24. http://dx.doi.org/10.54259/mudima.v2i1.418.

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The purpose of this study was to determine the potential of groundwater in Alasombo, Weru District, Sukoharjo Regency, Indonesia. The investigation has been carried out using geophysical methods that are integrated with surface geological data to obtain an interpretation of the hydrogeological control of the aquifer. The lithology of the aquifer is dominated by sandstone which controls its role as 2 types of aquifers, namely unconfined aquifers or free aquifers and semi-confined aquifers or semi-free aquifers. The geoelectrical section shows that the groundwater-carrying layer that functions a

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4

Luo, Zhaoyang, Jun Kong, Chengji Shen, et al. "Effects of aquifer geometry on seawater intrusion in annulus segment island aquifers." Hydrology and Earth System Sciences 25, no. 12 (2021): 6591–602. http://dx.doi.org/10.5194/hess-25-6591-2021.

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Abstract. Seawater intrusion in island aquifers was considered analytically, specifically for annulus segment aquifers (ASAs), i.e., aquifers that (in plan) have the shape of an annulus segment. Based on the Ghijben–Herzberg and hillslope-storage Boussinesq equations, analytical solutions were derived for steady-state seawater intrusion in ASAs, with a focus on the freshwater–seawater interface and its corresponding watertable elevation. Predictions of the analytical solutions compared well with experimental data, and so they were employed to investigate the effects of aquifer geometry on seaw

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5

Tsepav, Matthew Tersoo, Aliyu Yahaya Badeggi, Obaje Nuhu George, Usman Yusuf Tanko, and Ibrahim Samuel Ibbi. "On the Use of Electrical Resistivity Method in Mapping Potential Sources and Extent of Pollution of Groundwater Systems in Lapai Town, Niger State, Nigeria." Journal of Physics: Theories and Applications 5, no. 1 (2021): 18. http://dx.doi.org/10.20961/jphystheor-appl.v5i1.51563.

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<p>Electrical resistivity method employing the Schlumberger array was used to occupy forty four (44) vertical electrical sounding points in Lapai town with the aim of determining the depth to aquifers, aquifer thicknesses and aquifer protective capacity. The G41 Geotron resistivity meter was used in obtaining the apparent resistivity data which was processed using Interpex 1XD resistivity interpretation software. The results revealed four lithologic sections which include top lateritic soil, sandy clay, fractured basement and fresh basement. Both confined and unconfined aquifers were ide

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6

Zhang, Yi, and Dong Ming Guo. "Temperature Field of Single-Well Aquifer Thermal Energy Storage in Sanhejian Coal Mine." Advanced Materials Research 415-417 (December 2011): 1028–31. http://dx.doi.org/10.4028/www.scientific.net/amr.415-417.1028.

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The technology of aquifer thermal energy storage(ATES) is an energy-saving technology which can provide a solution to energy shortages and resources expasion. The first key point of this technology is whether the aquifer can be use to store energy. In this paper, taking Sanhejian Coal Mine as an example, we choose Quaternary upper loose sandy porosity confined aquifer to bottom clayed glavel porosity confined aquifer as aquifers thermal energy storage, to discuss whether the aquifers can be used to store energy. The simulation results of aquifer temperature field show that the selected aquifer

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7

Salvador, N., J. P. Monteiro, R. Hugman, T. Y. Stigter, and E. Reis. "Quantifying and modelling the contribution of streams that recharge the Querença-Silves aquifer in the south of Portugal." Natural Hazards and Earth System Sciences 12, no. 11 (2012): 3217–27. http://dx.doi.org/10.5194/nhess-12-3217-2012.

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Abstract. The water balance of the mesocenozoic aquifers of the Algarve, in the south of Portugal has traditionally been estimated considering only direct ("autogenic") recharge from rainfall occurring in the area of the aquifers. Little importance has been attributed to so-called allogenic recharge, originating from streambed infiltration from runoff generated outside the aquifers, particularly in the Palaeozoic rocks to the north where runoff is high. The Querença-Silves (QS) aquifer is the most important aquifer of the region both for irrigation and public water supply. Several important an

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8

Zhang, Yi, and Dong Ming Guo. "Temperature Field of Doublet-Wells Aquifer Thermal Energy Storage in Sanhejian Coal Mine." Advanced Materials Research 430-432 (January 2012): 746–49. http://dx.doi.org/10.4028/www.scientific.net/amr.430-432.746.

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Utilizating of tube-well irrigation, the technology of aquifer thermal energy storage (ATES) store rich cold energy in winter and cheap warm energy in summar into aquifers seasonally. In this paper, taking Sanhejian Coal Mine as an example, we discuss that with the same pumping and irrigation flow in doublet wells, distribution and change of temperature field in aquifers both at the end of energy storage and after the period of no pumping and no irrigation. The simulation results of aquifer temperature field show that 2~10°C water body of aquifers is decreasing in the period of no pumping and

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9

Li, Chengsong, Jie Fang, Feisheng Feng, Tingting Yao, Yongping Shan, and Wanli Su. "Differential Evolution in Hydrochemical Characteristics Amongst Porous, Fissured and Karst Aquifers in China." Hydrology 12, no. 7 (2025): 175. https://doi.org/10.3390/hydrology12070175.

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The efficacy of water resource management and protection hinges on a profound understanding of the controlling factors and regulatory mechanisms that shape groundwater chemistry within aquifers. Despite this, our comprehension of how groundwater chemistry and ion sources vary across diverse aquifer types remained limited. To bridge this gap, our study conducted a detailed hydrochemical and statistical investigation of porous, fissured, and karst aquifers. By applying multivariate statistical techniques, including principal component analysis (PCA) and hierarchical cluster analysis (HCA), the h

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10

Tapia-Villaseñor, Elia M., Sharon B. Megdal, and Eylon Shamir. "Prioritizing Transboundary Aquifers in the Arizona–Sonora Region: A Multicriteria Approach for Groundwater Assessment." Water 17, no. 3 (2025): 443. https://doi.org/10.3390/w17030443.

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Groundwater is vital to the well-being of over 20 million people in the nearly 2000-mile-long, arid U.S.–Mexico border region, supporting agricultural, industrial, domestic, and environmental needs. However, persistent droughts over the past two decades, coupled with increasing water demand and population growth, have significantly strained water resources, threatening the region’s water security. These challenges highlight the importance of comprehensive transboundary aquifer assessments, such as those conducted through the Transboundary Aquifer Assessment Program (TAAP), a collaborative effo

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11

Singh, K. P. "Nonlinear estimation of aquifer parameters from surficial resistivity measurements." Hydrology and Earth System Sciences Discussions 2, no. 3 (2005): 917–38. http://dx.doi.org/10.5194/hessd-2-917-2005.

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Abstract. The present study is focused on an examination of the correlation relationships for hydraulic permeability and transmissivity with electrical resistivity in a range of fractured and alluvial aquifers. The observed permeability data for fractured rock aquifers at some locations is correlated nonlinearly with electrical resistivity of the aquifers estimated from resistivity sounding data and it is found that the permeability of the aquifer in this region exponentially decreases with increase in resistivity. Permeability of the hard rock aquifer within the weathered zone and alluvium aq

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12

Jaka Yuwana, Ngudi Aji, Nora Herdiana Pandjaitan, and Roh Santoso Budi Waspodo. "Prediksi cadangan air tanah berdasarkan hasil pendugaan geolistrik di Kabupaten Grobogan, Jawa Tengah." JURNAL SUMBER DAYA AIR 13, no. 1 (2017): 23–36. http://dx.doi.org/10.32679/jsda.v13i1.139.

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One of the solutions for water shortage in Grobogan District is groundwater utilization. Excessive groundwater pumping will decrease groundwater level and trigger a landsubsidence. It is necessary to conduct hydrogeological study to determine the groundwater storage in this area. The purpose of this research were to determine the hydrogeological conditions, aquifer characteristics and potential of groundwater storage in Grobogan district. This research used geoelectrical method to identify rock characteristics. The results showed that the geological formation in Grobogan district consisted of

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13

Camuñas Palencia, Carlos, Miguel Mejías Moreno, Jorge Hornero Díaz, Fernando Ruíz Bermudo, and Olga García Menéndez. "Deep aquifers as strategic groundwater reservoir in Spain." BOLETÍN GEOLÓGICO Y MINERO 133, no. 3 (2022): 7–26. http://dx.doi.org/10.21701/bolgeomin/133.3/001.

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The objective of this paper is to establish a definition of deep aquifers, develop a methodological proposal to help select them as strategic groundwater reserves and develop a first inventory of deep aquifers in peninsular Spain, organized by hydrographic districts. The basic premises followed to consider a permeable formation as a deep aquifer are: water table depth greater than 300 m in free aquifers or the top of the permeable formation in the case of confined aquifers. A deep aquifer is also considered to be the lower horizon of very thick aquifers (from 300 m), from which the most superf

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14

Guttman, J., J. Kronfeld, and I. Carmi. "Dating of Groundwater Recharge in Two Small Adjacent Aquifers in Israel and Their Initial 14C Activities." Radiocarbon 53, no. 1 (2011): 137–49. http://dx.doi.org/10.1017/s003382220003441x.

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Radiocarbon and tritium determinations were carried out in 2 adjacent small aquifers in Israel. These aquifers have small storage capacities and good hydraulic properties. Darcy calculations suggest that the aquifers contain young waters, ≃50 yr in age. 14C concentrations in the Pleistocene aquifer are between 23–60 pMC, with the lowest activity related to contamination by petroleum-based fertilizers with no 14C. 14C concentrations in the Judea Group aquifer range from 62 to 95 pMC. An apparent difference of ≃1000 yr is indicated for the average recharge age between the 2 aquifers. The tritium

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15

Sun, Lin Hua, He Rong Gui, and Man Li Lin. "Hydro-Geochemistry of Deep Aquifers in Coal Mines in Northern Anhui Province, China: Implications for Water Rock Interaction and Water Source Discrimination." Advanced Materials Research 524-527 (May 2012): 604–7. http://dx.doi.org/10.4028/www.scientific.net/amr.524-527.604.

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Thirty-eight groundwater samples from three deep seated aquifers (the Quaternary, the Coal bearing and the Taiyuan Fm aquifers) had been collected from three coal mines in northern Anhui Province, China for analyzing their major ions, and the statistical methods (correlation, cluster and discriminant analysis) had been processed for evaluating the source of ions and relationship between aquifers. The results suggest that: (1) the chemical signatures of the groundwater are mainly controlled by dissolution of plagioclase, K-feldspar and calcite; (2) the aquifers had been mixed with each other, e

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16

Sehah, Sehah, Hartono Hartono, Zaroh Irayani, and Urip Nurwijayanto Prabowo. "Designing Aquifer Model for the Banks of the Serayu River, Sokawera, Somagede, Banyumas, Indonesia by Means of 1D-Electrical Resistivity Data." Journal of Mathematical and Fundamental Sciences 53, no. 3 (2021): 344–57. http://dx.doi.org/10.5614/j.math.fund.sci.2021.53.3.1.

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A geoelectric survey using the 1D-electrical resistivity method was applied to design a groundwater aquifer model for the banks of the Serayu River in Sokawera Village, Somagede District, Banyumas Regency, Indonesia. The aim of this research was to identify the characteristics of aquifers in the research area based on resistivity log data. Acquisition, modeling, and interpretation of resistivity data were carried out and the results were lithological logs at seven sounding points. Correlation between the lithological logs resulted in a hydrostratigraphic model. This model is composed of severa

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17

Zahid, Anwar, Farhana Islam, M. Rashidul Hassan, Kamrul Islam, and Nur Ahmed. "Analysis of Aquifer Pumping Test Data to Determine Deep Groundwater Security in Southeastern Bangladesh." Journal of Natural Resources and Development 8 (December 1, 2018): 125–43. http://dx.doi.org/10.5027/jnrd.v8i0.12.

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In southeastern Bangladesh, where water quality in the upper aquifers is a serious constraint, future development will likely be confined to deep fresh groundwater. Owing to the importance and pervasive use of deep groundwater, the sustainability of water use has received extensive attention. However, excessive extraction from deep aquifers may pose a threat to the storage as well as the quality of water due to the high susceptibility to salinization and arsenic contamination from upper aquifers. Hence, determining the extension of aquifer units and the characterizing aquifer sediments are ver

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18

Han, Tao, Yong Xue, Weikui Lv, Yu Zhang, and Tingting Luo. "Prediction and Analysis of Vertical Additional Force of Shaft Wall in Topsoil Containing Multiple Aquifers during Drainage." Sustainability 15, no. 4 (2023): 2877. http://dx.doi.org/10.3390/su15042877.

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Studying the additional force in topsoil containing multiple aquifers can have a significant impact on predicting shaft wall fracture and guaranteeing shaft safety, as the aquifer number increases as drainage occurs. In this study, a numerical model calculating the effect of drainage on additional force in topsoil, containing multiple aquifers, was established on the basis of several practical engineering cases. The changes in the stress displacement of the shaft wall was analyzed during three different stages of shaft construction using typical parameters, and the effects of the various facto

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19

Jamali, Muhammad Afzal, Muhammad Hassan Agheem, Akhtar Hussain Markhand, et al. "Exploration of Shallow Geothermal Energy Aquifers by Using Electrical Resistivity Survey in Laki Range Jamshoro district Sindh, Pakistan." International Journal of Economic and Environmental Geology 12, no. 1 (2021): 46–52. http://dx.doi.org/10.46660/ijeeg.vol12.iss1.2021.561.

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Geothermal water is increasingly used around the world for its exploitation. Bulk electrical resistivity differences can bring significant information on variation of subsurface geothermal aquifer characteristics. The electrical resistivity survey was carried out in Laki range in lower Indus basin in the study area to explore the subsurface geothermal aquifers. The Schlumberger electrode configuration with range from 2 m to 220 m depth was applied. Three prominent locations of hot springs were selected including Laki Shah Saddar, Lalbagh and Kai hot spring near Sehwan city. After processing re

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Sonthiphand, Prinpida, Pasunun Rattanaroongrot, Kasarnchon Mek-yong, et al. "Microbial community structure in aquifers associated with arsenic: analysis of 16S rRNA and arsenite oxidase genes." PeerJ 9 (January 8, 2021): e10653. http://dx.doi.org/10.7717/peerj.10653.

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The microbiomes of deep and shallow aquifers located in an agricultural area, impacted by an old tin mine, were explored to understand spatial variation in microbial community structures and identify environmental factors influencing microbial distribution patterns through the analysis of 16S rRNA and aioA genes. Although Proteobacteria, Cyanobacteria, Actinobacteria, Patescibacteria, Bacteroidetes, and Epsilonbacteraeota were widespread across the analyzed aquifers, the dominant taxa found in each aquifer were unique. The co-dominance of Burkholderiaceae and Gallionellaceae potentially contro

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Sonthiphand, Prinpida, Pasunun Rattanaroongrot, Kasarnchon Mek-yong, et al. "Microbial community structure in aquifers associated with arsenic: analysis of 16S rRNA and arsenite oxidase genes." PeerJ 9 (January 8, 2021): e10653. http://dx.doi.org/10.7717/peerj.10653.

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The microbiomes of deep and shallow aquifers located in an agricultural area, impacted by an old tin mine, were explored to understand spatial variation in microbial community structures and identify environmental factors influencing microbial distribution patterns through the analysis of 16S rRNA and aioA genes. Although Proteobacteria, Cyanobacteria, Actinobacteria, Patescibacteria, Bacteroidetes, and Epsilonbacteraeota were widespread across the analyzed aquifers, the dominant taxa found in each aquifer were unique. The co-dominance of Burkholderiaceae and Gallionellaceae potentially contro

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22

Ducci, Daniela, and Mariangela Sellerino. "A Modified AVI Model for Groundwater Vulnerability Mapping: Case Studies in Southern Italy." Water 14, no. 2 (2022): 248. http://dx.doi.org/10.3390/w14020248.

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Many methods for evaluating the aquifer’s vulnerability to pollution have been developed in the past four decades by using geographic information system (GIS) tools. However, even if the aquifer vulnerability concept is well defined and the methods have been constantly tested and compared, the problem of the choice of the best “standard” method remains. To meet these objectives, aquifer vulnerability maps are of crucial importance. The choice of method depends on several factors, including the scale of the project, the hydrogeological characteristics of the area, and data availability. Among t

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23

Lei, Kunchao, Fengshan Ma, Jiurong Liu, et al. "Leaking recharge mechanism in the multi-layer aquifer system of a typical land subsidence area in Beijing." Proceedings of the International Association of Hydrological Sciences 382 (April 22, 2020): 309–14. http://dx.doi.org/10.5194/piahs-382-309-2020.

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Abstract. It is of great significance to reveal the mechanism of land subsidence to further find out the mechanism of leakage flow in multi-layer aquifer systems and the water-release compression of weak aquifers. In this paper, conditions of groundwater leakage flow are expounded, and the initial hydraulic gradient calculation formula in the aquitards are deduced. The data of Tianzhu Land Subsidence Monitoring Station are selected to preliminarily discuss the leakage flow mechanism of the multi-layer groundwater system and water-release compression of weak aquifers. The results show that, fir

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Akanbi, Olanrewaju Akinfemiwa, and Moshood ‘Niyi Tijani. "Sustainability and Conceptual Groundwater Hydraulic Models of Basement Aquifers." Materials and Geoenvironment 66, no. 2 (2019): 87–98. http://dx.doi.org/10.2478/rmzmag-2019-0016.

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AbstractGroundwater flow of the basement terrains of the Ibarapa region was studied by carrying out pumping test and measurement of borehole inventory. The view was to identify the associated aquifer systems from the time-drawdown curves, quantify the estimable hydraulic properties and develop hypothetical models for the understanding of the groundwater flow in the area underlain by diverse crystalline bedrocks. Three aquifer types were identified namely, dual, leaky and regolith. The yield of groundwater in dual and leaky aquifers that dominated terrains underlain by amphibolite and gneisses

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Sun, Lin Hua. "Application of Rare Earth Elements for Water Source Discrimination in Renlou Coal Mine, Northern Anhui Province, China." Applied Mechanics and Materials 99-100 (September 2011): 1195–98. http://dx.doi.org/10.4028/www.scientific.net/amm.99-100.1195.

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Rare earth element (REEs) concentrations were measured for groundwater and wall rock samples from two aquifers (sandstone and limestone aquifers) in Renlou coal mine, northern Anhui Province, China. The results indicate that groundwater from these two aquifers are rich in REEs as expressed by their Nd concentrations (0.012 and 0.008 μg/L). They all show heavy REEs enrichment with low NdRN/YbRN ratios (0.35 and 0.40) when normalized to their aquifer rocks. Y- Ho fractionation are only observed for groundwater from limestone aquifer with high Y/Ho ratio (97 in average), whereas groundwater from

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Alla, Amani Jonas, N’Goran Jean Paul Yao, Diby Ferdinand Yao, and Zéli Bruno Digbehi. "Caractérisation Lithologique, Hydrosédimentaire Et Cartographie des Aquifères par la Méthode des Indices d’Évolution : Cas de la Recharge des Aquifères de Bonoua (Sud-Est Côte d’Ivoire)." European Scientific Journal, ESJ 20, no. 9 (2024): 214. http://dx.doi.org/10.19044/esj.2024.v20n9p214.

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Ce travail avait pour objectif de déterminer la typologie et la source probable de recharge des aquifères rencontrés à Bonoua en vue d’une meilleure gestion de ceux-ci. Les travaux ont utilisé des échantillons de forages prélevés à Bonoua au Sud-Est de la Côte d’Ivoire. L’étude lithologique a révélé des sables, des argiles sableuses et des argiles bariolées. Les sables constituent l’essentiel des aquifères. La détermination des indices d’évolution totale (Nt) et segmentaire (Ns) a illustré trois aquifères. La variation de ces indices a révélé une direction NW-SE des paléocourants. Les indices

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Krogulec, Ewa, Jerzy J. Małecki, Dorota Porowska, and Anna Wojdalska. "Assessment of Causes and Effects of Groundwater Level Change in an Urban Area (Warsaw, Poland)." Water 12, no. 11 (2020): 3107. http://dx.doi.org/10.3390/w12113107.

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Monitoring the data of groundwater level in long-term measurement series has allowed for assessment of the impact of natural and anthropogenic factors on groundwater recharge. It allows for assessing the actual groundwater quantity, which constitutes the basis for balanced and sustainable groundwater planning and management in an urban area. Groundwater levels in three aquifers were studied: the shallow and deeper Quaternary aquifers and the Oligocene aquifer in Warsaw (Poland). Statistical analysis was performed on a 27-year (1993–2019) cycle of daily measurements of groundwater levels. The s

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Willems, Cees J. L., Andrea Vondrak, Dirk K. Munsterman, Marinus E. Donselaar, and Harmen F. Mijnlieff. "Regional geothermal aquifer architecture of the fluvial Lower Cretaceous Nieuwerkerk Formation – a palynological analysis." Netherlands Journal of Geosciences 96, no. 4 (2017): 319–30. http://dx.doi.org/10.1017/njg.2017.23.

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AbstractThe primary challenge for efficient geothermal doublet design and deployment is the adequate prediction of the size, shape, lateral extent and thickness (or aquifer architecture) of aquifers. In the West Netherlands Basin, fluvial Lower Cretaceous sandstone-rich successions form the main aquifers for geothermal heat exploitation. Large variations in the thickness of these successions are recognised in currently active doublet systems that cannot be explained. This creates an uncertainty in aquifer thickness prediction, which increases the uncertainty in doublet lifetime prediction as i

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Setyaningsih, D. L., K. D. Setyawan, D. P. E. Putra, and Salahuddin. "Hydrogeological Conceptual Model in the Middle of Randublatung Groundwater Basin." IOP Conference Series: Earth and Environmental Science 926, no. 1 (2021): 012078. http://dx.doi.org/10.1088/1755-1315/926/1/012078.

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Abstract Randublatung groundwater basin is one of the groundwaters basins with massive utilization of groundwater pumping. However, the knowledge of the comprehensive hydrogeological system in this groundwater basin is limited, so this research aims to determine a comprehensive hydrogeological conceptual model of the Randublatung groundwater basin. The methodology was conducted by collecting secondary and primary data of deep and shallow wells to evaluate boundaries of pattern and direction of groundwater flow and develop the aquifer system’s geometry. The result shows that the groundwater flo

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Հայրոյան, Սարգիս Հ․, Արտաշես Հ․ Աղինյան та Տիրուհի Գ․ Մկրտչյան. "ԳԱՎԱՌ ՔԱՂԱՔԻ ԽՄԵԼՈՒ ՋՐԻ ՄԱՏԱԿԱՐԱՐՄԱՆ ՀԱՄԱՐ ՕԳՏԱԳՈՐԾՎՈՂ ՋՐԱՂԲՅՈՒՐՆԵՐԻ ԲՆԱԿԱՆ ՊԱՇՏՊԱՆՎԱԾՈՒԹՅԱՆ ԳՆԱՀԱՏՈՒՄԸ". Proceedings of the YSU C: Geological and Geographical Sciences 44, № 1 (221) (2010): 19–25. http://dx.doi.org/10.46991/pysu:c/2010.44.1.019.

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In the article problems of intrinsic vulnerability assessment of aquifers operating for drinking water supply of Gavar City are discussed. Investigation methods, hydrogeological conditions of western part of the Sevan basin, as well as intrinsic vulnerability of aquifers on borehole data are brought in the article. It has been established, that water-table aquifer is poorly protected, but the confined aquifer is protected.

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Cerar, Sonja, and Janko Urbanc. "Carbonate Chemistry and Isotope Characteristics of Groundwater of Ljubljansko Polje and Ljubljansko Barje Aquifers in Slovenia." Scientific World Journal 2013 (2013): 1–11. http://dx.doi.org/10.1155/2013/948394.

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Ljubljansko polje and Ljubljansko Barje aquifers are the main groundwater resources for the needs of Ljubljana, the capital of Slovenia. Carbonate chemistry and isotope analysis of the groundwater were performed to acquire new hydrogeological data, which should serve as a base for improvement of hydrogeological conceptual models of both aquifers. A total of 138 groundwater samples were collected at 69 sampling locations from both aquifers. Major carbonate ions and the stable isotope of oxygen were used to identify differences in the recharging areas of aquifers. Four groups of groundwater were

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32

Li, Maofei, Zhihai Jiang, Shucai Liu, Shangbin Chen, and Xuerui Tong. "Electromagnetic Field Distribution and Data Characteristics of SUTEM of Multilayer Aquifers." Applied Sciences 14, no. 20 (2024): 9358. http://dx.doi.org/10.3390/app14209358.

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Coal-bearing strata belong to sedimentary strata, and there are multiple aquifers. The accurate detection of deep aquifers is helpful to the safe mining of the working face. In order to provide guidance for the interpretation of the surface-to-underground transient electromagnetic method (SUTEM) that can be used to detect deep aquifers, we used theoretical analysis and numerical simulation methods in this study. Taking uniform half-spaces, single aquifers, and double aquifers as examples, we systematically studied the data characteristics and degree of influence of SUTEM under the influence of

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33

Trieu, Duc Huy, Ngoc Thanh Tong, Van Lam Nguyen, Ba Quyen Pham, Dai Phuc Hoang, and Hoai Thu Trinh. "Classification of hydrogeological structure along the Red River in the Hanoi area." Tạp chí Khoa học và Công nghệ Biển 21, no. 3 (2021): 299–310. http://dx.doi.org/10.15625/1859-3097/16431.

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Hanoi city has abundant groundwater, supplemented by the surface water (mainly Red River) all year round, and the extensive shallow aquifers, which are easily exploited by large-diameter wells. There always exists some open hydrogeological windows in the Red River area with an open structure; therefore, the groundwater has a strained hydraulic relationship with the Red River water system Along the Red River from Ba Vi to the end of Phu Xuyen district, there are nine regions with three types and four sub-types of different hydrogeological structures. In particular, the sub-type I-A of the groun

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34

Zuurbier, Koen Gerardus, and Pieter Jan Stuyfzand. "Consequences and mitigation of saltwater intrusion induced by short-circuiting during aquifer storage and recovery in a coastal subsurface." Hydrology and Earth System Sciences 21, no. 2 (2017): 1173–88. http://dx.doi.org/10.5194/hess-21-1173-2017.

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Abstract. Coastal aquifers and the deeper subsurface are increasingly exploited. The accompanying perforation of the subsurface for those purposes has increased the risk of short-circuiting of originally separated aquifers. This study shows how this short-circuiting negatively impacts the freshwater recovery efficiency (RE) during aquifer storage and recovery (ASR) in coastal aquifers. ASR was applied in a shallow saltwater aquifer overlying a deeper, confined saltwater aquifer, which was targeted for seasonal aquifer thermal energy storage (ATES). Although both aquifers were considered proper

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35

Neupane, Sharmila, Ananta Prasad Gajurel, Nir Shakya, Maartin Lupker, and Rabina Hada. "Assessment on connection between shallow and deep aquifers using isotope analysis of surface water and groundwater in Sunsari and Morang Districts." Journal of Nepal Geological Society 59 (July 25, 2019): 73–78. http://dx.doi.org/10.3126/jngs.v59i0.24991.

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The Sunsari and the Morang Districts confine the eastern region of the Koshi River and are considered as a huge potential of groundwater zones. The study mainly focuses on the concept of delineation of recharge source of groundwater and connection between aquifer system through isotopic analysis. Altogether 33 samples are collected from surface and groundwater for the isotopic analysis. Majority of the samples of flowing artesian wells are encountered under the range of -7.03‰ to -6.53‰. The shallow aquifers fall under the range of -5.94‰. to -5.34‰ and deep aquifers fall over a wide range of

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36

Babagana, Saleh Mustapha, and Satendra Sharma. "GEOPHYSICAL CHARACTERIZATION OF AQUIFER SYSTEMS USING VERTICAL ELECTRICAL SOUNDING METHOD IN DEMSA, NORTHEAST NIGERIA." International Journal of Research -GRANTHAALAYAH 8, no. 11 (2020): 175–84. http://dx.doi.org/10.29121/granthaalayah.v8.i11.2020.2379.

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Abstract (sommario):

Electrical resistivity method using vertical electrical sounding (VES) technique and Schlumberger array was employed with the aim of delineating limits and types of aquifer system(s), and stratigraphic composition of the Demsa area, a confluence of Benue River in Northeast Nigeria. The result revealed that the hydrogeology of the area may be controlled by fractures (secondary porosity) developed in sedimentary units. Two aquifers, namely the upper alluvial aquifer and the confined deeper aquifer systems exist in the study area. The two aquifers occur at depths of 20.5 – 41 m, and 43.8 – 78.9 m

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Παναγόπουλος, Γ., E. Πυτικάκης, K. Κατσάνου, and N. Λαμπράκης. "HYDRO GEOLOGICAL CONDITIONS AND GROUNDWATER QUALITY DEGRADATION IN MESSINI REGION." Bulletin of the Geological Society of Greece 36, no. 4 (2004): 2031. http://dx.doi.org/10.12681/bgsg.16702.

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The aquifers of the Messini region were categorized on the basis of lithology of different geological formations and are presented in this study. They are classified in two main categories: the porous media aquifers, in which are included the alluvial deposits and the Pleio-pleistocene formations, and the karst aquifers of carbonate rocks. Based on field and laboratorial chemical analyses, a relatively increased salinity of the karst aquifer was confirmed and is attributed to natural mixing mechanisms between fresh and seawater. Also, high concentrations of nitrates and nitrites were determine

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38

Fabbri, Paolo, and Leonardo Piccinini. "Assessing transmissivity from specific capacity in an alluvial aquifer in the middle Venetian plain (NE Italy)." Water Science and Technology 67, no. 9 (2013): 2000–2008. http://dx.doi.org/10.2166/wst.2013.074.

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Abstract (sommario):

Defining aquifer permeability distribution accurately over large areas is often debated in hydrogeology. The operational efforts to calculate hydraulic conductivity with classical aquifer tests are significant; however, accurate knowledge of permeability areal distribution is fundamental both from a hydrogeological and a modeling standpoint. This paper presents an empirical relationship between the transmissivity (T) and the specific capacity (SC) values obtained from experimental aquifer and well tests. All experimental values were obtained from 50 mm wells in middle Venetian plain artesian g

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39

Al-Kilabi, Joudah A. "HYDROCHEMICAL COMPARISON OF GROUNDWATER IN DIBBDIBA AND DAMMAM AQUIFERS IN THE KARBALA PLATEAU, CENTRAL IRAQ." Iraqi Geological Journal 51, no. 1 (2018): 101–12. http://dx.doi.org/10.46717/igj.51.1.7ms-2018-06-29.

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Abstract (sommario):

Fifty groundwater samples of water wells drilled in Karbala Plateau by the General Commission for Groundwater, twenty samples from Dibdibba and thirty from Dammam aquifers. The samples were anlaysed for major ions (Ca2+, Mg2+, Na+, K+, SO4 2+, Cl–, HCO3 –, and NO3 –), in addition to pH, EC and TDS. The aim of this study is to compare these aquifers hydrocamically and identify factors controlling their chemistry. Rock weathering is the main process affecting chemistry of Dammam groundwater in addition to cation exchange process. Evaporation process plays an important role influenced the chemica

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40

Shirazi, Sharif Moniruzzaman, Md Ibrahim Adham, Noorul Hassan Zardari, Zubaidah Ismail, Hosen Md Imran, and Munir Ahmed Mangrio. "Groundwater quality and hydrogeological characteristics of Malacca state in Malaysia." Journal of Water and Land Development 24, no. 1 (2015): 11–19. http://dx.doi.org/10.1515/jwld-2015-0002.

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Abstract (sommario):

Abstract Groundwater quality and aquifer productivity of Malacca catchment in Peninsular Malaysia are presented in this article. Pumping test data were collected from 210 shallow and 17 deep boreholes to get well inventory information. Data analysis confirmed that the aquifers consisting of schist, sand, limestone and volcanic rocks were the most productive aquifers for groundwater in Malacca state. GIS-based aquifer productivity map was generated based on bedrock and discharge capacity of the aquifers. Aquifer productivity map is classified into three classes, namely high, moderate and low ba

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41

Wumu, Rizky Hizrah, Ahmad Zainuri, and Noviar Akase. "Karakteristik Akuifer Menggunakan Metode Geolistrik Resistivity Di Kecamatan Kota Tengah Kota Gorontalo." Jambura Geoscience Review 4, no. 1 (2022): 60–68. http://dx.doi.org/10.34312/jgeosrev.v4i1.12752.

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Abstract (sommario):

Kota Tengah Subdistrict has the highest population density in Gorontalo City, with a population density of 6,755 people/km2. This high population density requires a large amount of water to meet the needs of the population, where one form of fulfillment is taken from groundwater. For this reason, it is necessary and important to know the characteristics of aquifers. This study aims to determine the characteristics of groundwater aquifers in the Kota Tengah Subdistrict. The method used is the resistivity geoelectric method to obtain aquifer characteristics in the form of material type (litholog

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Rathinasamy, Vynotdni, Edy Tonnizam Mohammad, and Ibrahim Komoo. "Review on Rock Aquifers Researches Conducted in Malaysia." MATEC Web of Conferences 250 (2018): 01007. http://dx.doi.org/10.1051/matecconf/201825001007.

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Abstract (sommario):

The exploration of groundwater in Malaysia was not very welcomed due to few misconceptions such as it is very expensive to extract, could give negative impacts to the environment and not reliable. Yet, in recent times, rock aquifers such as limestone, sedimentary rocks, volcanic rocks, igneous rocks and metasedimetary rocks are being explored. This paper aims to review the researches that have been carried out on rock aquifers in Malaysia. In general, the topics studied were potential zonation, groundwater quality and quantity, occurrence and flow of groundwater as well as characterization of

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43

Long, A. J., and B. J. Mahler. "Predictability, stationarity, and classification of hydraulic responses to recharge in two karst aquifers." Hydrology and Earth System Sciences Discussions 9, no. 8 (2012): 9577–609. http://dx.doi.org/10.5194/hessd-9-9577-2012.

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Abstract. Karst aquifers, many of which are rapidly filled and depleted, are likely to be highly susceptible to changes in short-term climate variability. Here we explore methods that could be applied to model site-specific hydraulic responses, with the intent of simulating these responses to different climate scenarios from high-resolution climate models. We compare hydraulic responses (spring flow, groundwater level, and stream base flow) at several sites in two karst aquifers: the Edwards aquifer (Texas, USA) and the Madison aquifer (South Dakota, USA). A one-dimensional, lumped-parameter m

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44

Darsono, Darsono, Ahmad Marzuki, Nuryani Nuryani, and G. Yuliyanto. "Detection of groundwater aquifers using geoelectrical resistivity method (case study : Plupuh Sub-district, Sragen District )." Journal of Physics: Conference Series 2498, no. 1 (2023): 012004. http://dx.doi.org/10.1088/1742-6596/2498/1/012004.

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Abstract (sommario):

Abstract An aquifer is a layer below the ground surface that contains groundwater. Inside the earth there are unconfined aquifers and confined aquifers, where unconfined aquifers are located near the surface while confined aquifers are located very deep beneath the earth. This study aims to find the location, depth, and thickness of aquifers that have the potential to contain large amounts of groundwater. The instrument used in this research is a resistivity meter OYO Model 2119C Mc OHM-EL, with a Schlumberger configuration with a current electrode length of AB/2 to 350 meters. Data acquisitio

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45

Jaime, Sarahi, Adrián Cervantes-Martínez, Martha A. Gutiérrez-Aguirre, et al. "Toward an Integrative Overview of Stygobiotic Crustaceans for Aquifer Delimitation in the Yucatan Peninsula, Mexico." Diversity 17, no. 2 (2025): 77. https://doi.org/10.3390/d17020077.

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Abstract (sommario):

The Yucatan Peninsula (YP) presents heterogeneous environments in a karstic landscape that has been formed from permeable sedimentary rocks dating from the Cretaceous period. Its aquifers now face significant pressure from tourism, agriculture, soil use changes and population growth. Aquifer delimitation typically relies on environmental and socioeconomic criteria, overlooking the subterranean fauna. Stygobiotic crustaceans are highly diverse in the YP’s subterranean karstic systems, expressing adaptations to extreme environments while often also displaying the primitive morphology of evolutio

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46

De Paoli, Caroline, Thierry Duren, Estelle Petitclerc, Mathieu Agniel, and Alain Dassargues. "Modelling Interactions between Three Aquifer Thermal Energy Storage (ATES) Systems in Brussels (Belgium)." Applied Sciences 13, no. 5 (2023): 2934. http://dx.doi.org/10.3390/app13052934.

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Abstract (sommario):

Shallow open-loop geothermal systems function by creating heat and cold reserves in an aquifer, via doublets of pumping and reinjection wells. Three adjacent buildings in the center of Brussels have adopted this type of aquifer thermal energy storage (ATES) system. Two of them exploit the same aquifer consisting of Cenozoic sands, and started operation in 2014 and 2017, respectively. A previous hydrogeological model developed by Bulté et al. (2021) has shown how the thermal imbalance of one of the systems jeopardizes the thermal state of this upper aquifer. Here, the interactions with a more r

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47

Lei, Jun Qin, Xiu Qing Zheng, and Hong Fei Zang. "The Effect of Coal Mining on the Multi-Aquifer System." Advanced Materials Research 919-921 (April 2014): 1252–56. http://dx.doi.org/10.4028/www.scientific.net/amr.919-921.1252.

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Abstract (sommario):

Based on the analysis of the regional geological and hydrogeologic conditions of a coal mine in Xishan Coalfield, Shanxi Province in China, the groundwater aquifer system is generalized as a three layers structure in vertical direction and a three-dimensional unsteady flow model in confined aquifer is established. The regime of karst groundwater levels under the coal mining conditions for both Carboniferous and Ordovician limestone aquifers are predicted by using Visual Modflow. The results show that the groundwater levels of the two aquifers are all in decline as a result of coal mining. Afte

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48

Liu, Yu, Yin Li, Yucheng Hu, Khan M. G. Mostofa, Siliang Li, and Zhenying Liu. "Adsorption Characteristics and Transport Behavior of Cr(VI) in Shallow Aquifers Surrounding a Chromium Ore Processing Residue (COPR) Dumpsite." Journal of Chemistry 2019 (November 3, 2019): 1–10. http://dx.doi.org/10.1155/2019/4932837.

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Abstract (sommario):

This study explored the stratigraphic distribution and soil/shallow aquifer characteristics surrounding a chromium ore processing residue (COPR) dumpsite at a former chemical factory in China. Total Cr levels in top soils (5–10 cm) nearby the COPR dumpsite were in the range of 8571.4–10711.4 mg/kg. Shallow aquifers (1–6 m) nearby the COPR dumpsite showed a maximum total Cr level of 9756.7 mg/kg. The concentrations of Cr(VI) in groundwater nearby the COPR dumpsite were 766.9–1347.5 mg/L. These results display that the top soils, shallow aquifers, and groundwater of the study site are severely p

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49

Afazal Jamali, Muhammad, Muhammad Hassan Agheem, Akhtar Hussain Markhand, et al. "Exploration of Shallow Geothermal Energy Aquifers by Using Electrical Resistivity Survey in Laki Range Jamshoro district Sindh, Pakistan." International Journal of Economic and Environmental Geology 12, no. 1 (2024): 46–52. http://dx.doi.org/10.46660/ijeeg.v12i1.146.

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Abstract (sommario):

Geothermal water is increasingly used around the world for its exploitation. Bulk electrical resistivitydifferences can bring significant information on variation of subsurface geothermal aquifer characteristics. Theelectrical resistivity survey was carried out in Laki range in lower Indus basin in the study area to explore thesubsurface geothermal aquifers. The Schlumberger electrode configuration with range from 2 m to 220 m depth wasapplied. Three prominent locations of hot springs were selected including Laki Shah Saddar, Lalbagh and Kai hotspring near Sehwan city. After processing resisti

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50

Koesuma, Sorja, Daniel Afrian Pratama, and Budi Legowo. "Mapping of seawater intrusion in coastal areas using resistivity geoelectric method in Dukuhseti, Pati." Journal of Physics: Conference Series 2945, no. 1 (2025): 012028. https://doi.org/10.1088/1742-6596/2945/1/012028.

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Abstract (sommario):

Abstract Seawater mapping of the coastal area of the Dukuhseti District was carried out using the resistivity geoelectric method. The resistivity geoelectric method measures subsurface-specific resistance by passing an electric current into the ground. This geoelectric method uses a 1D Schlumberger configuration, and measurement is done at 12 points. Based on 1D data, seawater intrusion is present in shallow aquifers with a 5 to 50 meters depth range. Resistivity in shallow aquifers containing saltwater at 0.1Ωm - 2.5Ωm, low resistivity indicates the presence of saltwater rocks. Saltwater is n

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