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Journal articles on the topic 'Aquifer testing'

Author: Grafiati

Published: 4 June 2021

Last updated: 6 February 2022

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1

Minnaar, R. C., and M. A. Dippenaar. "Hydrogeological characterisation of regional faults and dolerite dykes in the Precambrian Basement and Karoo Supergroup (Tete Province, Mozambique)." South African Journal of Geology 122, no. 3 (2019): 343–56. http://dx.doi.org/10.25131/sajg.122.0023.

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Abstract Faults and dolerite dykes within Basement- and Karoo-aquifers in northern Mozambique may increase groundwater occurrence but may also be barriers to groundwater flow. Should observation boreholes drilled into regional and local faults as well as dykes show a response to aquifer testing, it would be deduced that these hydrogeological discontinuities are not barriers to groundwater flow. The approach adopted for this study included a sequential process involving data acquisition through a hydrogeological fieldwork programme consisting of geophysical surveys, borehole drilling, aquifer t

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2

Morris, Ryan, and Marcus Horgan. "Aquifer injection for CSG water management in the Surat Basin, Queensland." APPEA Journal 52, no. 2 (2012): 676. http://dx.doi.org/10.1071/aj11090.

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Appropriate water management associated with CSG production is key to regulatory approval and public acceptance of CSG projects. Policy in Queensland makes injection of treated produced water the government's main and preferred option for CSG water management to ensure protection of the Great Artesian Basin as a groundwater resource. In 2010, Australia Pacific LNG started an extensive program of aquifer injection trials across its Surat and southern Bowen Basin CSG fields. The purpose of the trials is to assess the technical and economic feasibility of aquifer injection. The trial program comp

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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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Mirecki, June E., Bruce G. Campbell, Kevin J. Conlon, and Matthew D. Petkewich. "Solute Changes During Aquifer Storage Recovery Testing in a Limestone/Clastic Aquifer." Ground Water 36, no. 3 (1998): 394–403. http://dx.doi.org/10.1111/j.1745-6584.1998.tb02809.x.

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5

Medici, Giacomo, Landis Jared West, Pippa Joanne Chapman, and Steven Allan Banwart. "Prediction of contaminant transport in fractured carbonate aquifer types: a case study of the Permian Magnesian Limestone Group (NE England, UK)." Environmental Science and Pollution Research 26, no. 24 (2019): 24863–84. http://dx.doi.org/10.1007/s11356-019-05525-z.

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AbstractViruses and bacteria which are characterized by finite lives in the subsurface are rapidly transported via fractures and cavities in fractured and karst aquifers. Here, we demonstrate how the coupling of a robust outcrop characterization and hydrogeophysical borehole testing is essential for prediction of contaminant velocities and hence wellhead protection areas. To show this, we use the dolostones of the Permian Magnesian Limestone aquifer in NE England, where we incorporated such information in a groundwater flow and particle tracking model. Within this aquifer, flow in relatively n

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Dong, Shuning, Hao Wang, and Wanfang Zhou. "Characterization and Remediation of Karst Collapse Columns for Mining Safety and Environmental Protection: A Case Study in Renlou Coal Mine, China." Environment and Natural Resources Research 8, no. 2 (2018): 128. http://dx.doi.org/10.5539/enrr.v8n2p128.

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Karst collapse columns are unique collapse structures in karst terranes. Coal mining in China has exposed numerous such features of tens of meters in diameter and hundreds of meters in height. Hydraulically conductive collapses functioned as groundwater pathways between underground workings and aquifers, resulting in water inrushes during coal mining. Over the last 60 years, water inrushes through these collapses have caused fatalities, economic losses, and degradation in the environment. Determination of locations and hydrogeological characteristics of the karst collapse columns are essential

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Hyndman, David W., and Jerry M. Harris. "Traveltime inversion for the geometry of aquifer lithologies." GEOPHYSICS 61, no. 6 (1996): 1728–37. http://dx.doi.org/10.1190/1.1444090.

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Crosswell traveltime tomography can provide detailed descriptions of the geometry and seismic slowness of lithologic zones in aquifers and reservoirs. Traditional tomographic inversions that estimate a smooth slowness field to match traveltime data, provide limited information about the dominant scale of subsurface heterogeneity. We demonstrate an alternative method, called the multiple population inversion (MPI), that co‐inverts traveltimes between multiple well pairs to identify the spatial distribution of a small number of slowness populations. We also compare the MPI with the split inversi

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8

Bai, Erhu, Wenbing Guo, Dongsheng Zhang, Yi Tan, Mingjie Guo, and Gaobo Zhao. "Using the Magnetotelluric Method for Detecting Aquifer Failure Characteristics under High-Intensity Mining of Thick Coal Seams." Energies 12, no. 22 (2019): 4397. http://dx.doi.org/10.3390/en12224397.

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In the ecologically fragile mining area of northwest China, high-intensity mining has seriously affected the aquifer and surface eco-environment. In order to better implement water-preserved mining in ecologically fragile areas, the aquifer failure characteristics should be first detected accurately; therefore, it is necessary to find a convenient and fast detection method. Based on the analysis of the basic principles and influencing factors of the magnetotelluric (MT) method, the feasibility of using the MT method to detect aquifer failure is verified by testing the mined area with MT detect

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9

Rimon, Y., E. R. Graber, and A. Furman. "Interpolation of extensive routine water pollution monitoring datasets: methodology and discussion of implications for aquifer management." Hydrology and Earth System Sciences Discussions 10, no. 7 (2013): 9363–87. http://dx.doi.org/10.5194/hessd-10-9363-2013.

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Abstract. A large fraction of the fresh water available for human use is stored in groundwater aquifers. Since human activities such as mining, agriculture, industry and urbanization often result in incursion of various pollutants to groundwater, routine monitoring of water quality is an indispensable component of judicious aquifer management. Unfortunately, groundwater pollution monitoring is expensive and usually cannot cover an aquifer with the spatial resolution necessary for making adequate management decisions. Interpolation of monitoring data between points is thus an important tool for

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10

Loveridge, Fleur, Gary Holmes, William Powrie, and Toby Roberts. "Thermal response testing through the Chalk aquifer in London, UK." Proceedings of the Institution of Civil Engineers - Geotechnical Engineering 166, no. 2 (2013): 197–210. http://dx.doi.org/10.1680/geng.12.00037.

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11

Allenaan, Diana M., and Frederick A. Michel. "Characterizing a Faulted Aquifer by Field Testing and Numerical Simulation." Ground Water 37, no. 5 (1999): 718–28. http://dx.doi.org/10.1111/j.1745-6584.1999.tb01164.x.

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12

Wu, Jianzhong, Xuexin Yan, Tianliang Yang, and Xinlei Huang. "Research on solute transport characteristics in the process of artificial recharge to control land subsidence in deep confined aquifer." Proceedings of the International Association of Hydrological Sciences 382 (April 22, 2020): 709–13. http://dx.doi.org/10.5194/piahs-382-709-2020.

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Abstract. Since 1960s, Artificial Recharge has been adopted to control the geological disaster of land subsidence in Shanghai. The water source to recharge to the confined aquifer meet the Standard for Drinking Water Quality which comes from the Huangpu River or Yangtze River. Thinking the difference between the primary environment of deep confined aquifer and the surface water, the recharge will exert an impact on the quality of groundwater in the deep confined aquifer, as well as to obtain satisfactory effects of land subsidence prevention.This paper focused on the change rules of the elemen

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Malkov, A. V., I. M. Pershin, and I. S. Pomelyayko. "A METHOD OF ESTIMATION THE PARAMETERS OF THE AQUIFERS BASED ON THE DATA OF TESTING FILTRATION WORKS UNDER CONDITIONS OF HYDRAULIC COUPLING." Proceedings of higher educational establishments. Geology and Exploration, no. 1 (April 22, 2018): 36–42. http://dx.doi.org/10.32454/0016-7762-2018-1-36-42.

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The paper proposes a technique for determining the hydrodynamic parameters under conditions of the hydraulic coupling of the aquifers. A test modeling has shown that the existing methods of determining the flow parameter (Teys, Jacob, Hantush) give significant errors. They can be used only under the assumptions that are made in the derivation of the known calculated dependencies. The accuracy of the determining the overflow parameter has been shown to be largely determined by the ratio of the water loss of the aquifer under study and the adjacent one, which is a source of additional nutrition.

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Tritschler, Felix, Martin Binder, Falk Händel, Diana Burghardt, Peter Dietrich, and Rudolf Liedl. "Collected Rain Water as Cost‐Efficient Source for Aquifer Tracer Testing." Groundwater 58, no. 1 (2019): 125–31. http://dx.doi.org/10.1111/gwat.12898.

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15

Moench, Allen F. "Convergent radial dispersion: A Laplace transform solution for aquifer tracer testing." Water Resources Research 25, no. 3 (1989): 439–47. http://dx.doi.org/10.1029/wr025i003p00439.

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16

Székely, Ferenc. "Evaluation of Pumping Induced Flow in Observation Wells During Aquifer Testing." Groundwater 51, no. 5 (2012): 762–67. http://dx.doi.org/10.1111/j.1745-6584.2012.01013.x.

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17

Gao, Ying, Tao Li, and Hongyang Liu. "Study on Discrimination Model of Water Inrush Source in Binhuang Mining Area of China." E3S Web of Conferences 299 (2021): 02015. http://dx.doi.org/10.1051/e3sconf/202129902015.

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Groundwater flow into the mine by coal mining, which threatens the safety of coal mine. Therefore, it is necessary to identify the source of the water flowing into the coal mine. Taking binhuang mining area in Shaanxi Province as the research background, the discrimination models of six water inrush sources had been studied. The composition of 256 water samples was determined and the water quality characteristics of 6 water sources were analyzed. Fisher linear discriminant function model was established by selecting 9 indexes of water quality components. By testing the discriminant effect, it

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18

Rogiers, B., K. Beerten, T. Smeekens, et al. "The usefulness of outcrop-analogue air-permeameter measurements for analysing aquifer heterogeneity: testing outcrop hydrogeological parameters with independent borehole data." Hydrology and Earth System Sciences 17, no. 12 (2013): 5155–66. http://dx.doi.org/10.5194/hess-17-5155-2013.

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Abstract. Outcropping sediments can be used as easily accessible analogues for studying subsurface sediments, especially to determine the small-scale spatial variability of hydrogeological parameters. The use of cost-effective in situ measurement techniques potentially makes the study of outcrop sediments even more attractive. We investigate to what degree air-permeameter measurements on outcrops of unconsolidated sediments can be a proxy for aquifer saturated hydraulic conductivity (K) heterogeneity. The Neogene aquifer in northern Belgium, known as a major groundwater resource, is used as th

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Rogiers, B., K. Beerten, T. Smeekens, et al. "The usefulness of outcrop analogue air permeameter measurements for analysing aquifer heterogeneity: testing outcrop hydrogeological parameters with independent borehole data." Hydrology and Earth System Sciences Discussions 10, no. 7 (2013): 9689–720. http://dx.doi.org/10.5194/hessd-10-9689-2013.

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Abstract. Outcropping sediments can be used as easily accessible analogues for studying subsurface sediments, especially to determine the small-scale spatial variability of hydrogeological parameters. The use of cost-effective in situ measurement techniques potentially makes the study of outcrop sediments even more attractive. We investigate to what degree air permeameter measurements on outcrops of unconsolidated sediments can be a proxy for aquifer saturated hydraulic conductivity (K) heterogeneity. The Neogene aquifer in northern Belgium, known as a major groundwater resource, is used as ca

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20

Flach, Gregory P., Mary K. Harris, Andrew D. Smits, and Frank H. Syms. "Modeling aquifer heterogeneity using cone penetration testing data and stochastic upscaling methods." Environmental Geosciences 12, no. 1 (2005): 1–15. http://dx.doi.org/10.1306/eg.06140404025.

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21

Brown, David, and Lee D. Slater. "Focused packer testing using geophysical tomography and CCTV in a fissured aquifer." Quarterly Journal of Engineering Geology and Hydrogeology 32, no. 2 (1999): 173–83. http://dx.doi.org/10.1144/gsl.qjeg.1999.032.p2.07.

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Mehnert, Edward, Donald A. Keefer, William S. Dey, H. Allen Wehrmann, Steven D. Wilson, and Chittaranjan Ray. "Aquifer Sensitivity to Pesticide Leaching: Testing a Soils and Hydrogeologic Index Method." Groundwater Monitoring & Remediation 25, no. 4 (2005): 60–67. http://dx.doi.org/10.1111/j.1745-6592.2005.00047.x.

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23

Fokker, Peter A., Eloisa Salina Borello, Dario Viberti, Francesca Verga, and Jan-Diederik van Wees. "Pulse Testing for Monitoring the Thermal Front in Aquifer Thermal Energy Storage." Geothermics 89 (January 2021): 101942. http://dx.doi.org/10.1016/j.geothermics.2020.101942.

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24

Gui, Herong, Manli Lin, and Xiaomei Song. "Technical research on controlling major karst water hazards in China coalmines." Water Practice and Technology 11, no. 3 (2016): 661–71. http://dx.doi.org/10.2166/wpt.2016.071.

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Karst water is one of the major water hazards in China coalmines, causing frequent mine flooding and sever human casualties. This article, starting out on the spatial relation between mining facility and karst aquifer, extensively illustrates the techniques to identify water burst risks in karst aquifer and field testing methods of key parameters; primary water hazards control techniques for specific mining conditions and hydrogeological properties, such as retaining water-resistant safety rock pillar, water draining and depressurizing, bottom aquifuge consolidation grouting and revamp. All ac

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25

Das, Biswa R., David B. Willis, and Jeffrey Johnson. "Effectiveness of Two Water Conservation Policies: An Integrated Modeling Approach." Journal of Agricultural and Applied Economics 42, no. 4 (2010): 695–710. http://dx.doi.org/10.1017/s1074070800003898.

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Agriculture in the Texas High Plains depends entirely on the Ogallala Aquifer. Texas enacted water conservation legislation to address declining reserves in the aquifer. We developed an integrated regional water policy model that links a hydrology model with an economic optimization model to estimate policy impacts with respect to economic cost and water conservation. Testing the effectiveness of two policies, a groundwater extraction tax and extraction quotas, we observe that neither significantly inhibits groundwater use. Although both policies conserve similar amounts of groundwater, the re

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Pollicino, Licia C., Marco Masetti, Stefania Stevenazzi, Loris Colombo, and Luca Alberti. "Spatial Statistical Assessment of Groundwater PCE (Tetrachloroethylene) Diffuse Contamination in Urban Areas." Water 11, no. 6 (2019): 1211. http://dx.doi.org/10.3390/w11061211.

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Contamination by chlorinated solvents is typically associated with point sources, which are able to release high concentrations and to generate well defined plumes. Nevertheless, in urban settings (especially in functional urban areas—FUAs), multiple-point sources are frequently present, consisting of a series of unidentifiable small sources clustered within large areas, generating a diffuse, anthropogenic contamination. This situation results in the coexistence of single plumes with higher contaminant concentrations, and larger areas where the concentration is lower but still higher than the

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Pulido-Velazquez, David, Arianna Renau-Pruñonosa, Carlos Llopis-Albert, et al. "Integrated assessment of future potential global change scenarios and their hydrological impacts in coastal aquifers – a new tool to analyse management alternatives in the Plana Oropesa-Torreblanca aquifer." Hydrology and Earth System Sciences 22, no. 5 (2018): 3053–74. http://dx.doi.org/10.5194/hess-22-3053-2018.

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Abstract. Any change in the components of the water balance in a coastal aquifer, whether natural or anthropogenic, can alter the freshwater–salt water equilibrium. In this sense climate change (CC) and land use and land cover (LULC) change might significantly influence the availability of groundwater resources in the future. These coastal systems demand an integrated analysis of quantity and quality issues to obtain an appropriate assessment of hydrological impacts using density-dependent flow solutions. The aim of this work is to perform an integrated analysis of future potential global chan

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Stuyfzand, Pieter J., and Javier Osma. "Clogging Issues with Aquifer Storage and Recovery of Reclaimed Water in the Brackish Werribee Aquifer, Melbourne, Australia." Water 11, no. 9 (2019): 1807. http://dx.doi.org/10.3390/w11091807.

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As part of an integrated water-cycle management strategy, City West Water (CWW) is conducting research to develop an aquifer storage recovery (ASR) scheme utilizing recycled water. In this contribution, we address the risk of well clogging based on two ASR bore pilots, each with intensive monitoring. Well clogging is a critical aspect of the strategy due to a projected high injection rate, a high clogging potential of recycled water, and a small diameter injection borehole. Microscopic and geochemical analysis of suspended solids in the injectant and backflushed water, demonstrate a significan

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Moench, Allen F. "Correction to “Convergent Radial Dispersion: A Laplace Transform Solution for Aquifer Tracer Testing”." Water Resources Research 32, no. 5 (1996): 1475. http://dx.doi.org/10.1029/96wr00392.

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Newcomer, D. R., S. H. Hall, and V. R. Vermeul. "Use of Improved Hydrologic Testing and Borehole Geophysical Logging Methods for Aquifer Characterization." Groundwater Monitoring & Remediation 16, no. 1 (1996): 67–72. http://dx.doi.org/10.1111/j.1745-6592.1996.tb00571.x.

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31

Auzinaa, L. I., and Yu K. Lankin. "Features of ground inflow testing in the areas of double porosity aquifer development." Earth sciences and subsoil use 44, no. 2 (2021): 116–24. http://dx.doi.org/10.21285/2686-9993-2021-44-2-116-124.

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The purpose of the study is optimization of geological exploration at the groundwater deposits of the upper hydrodynamic zone formed in the fault-block structure conditions in Eastern Siberia. The authors analyze the structural and tectonic features of the areas under investigation, the results of areal geophysics studies, exploration drilling and the use of the author's methodology in carrying out of the ground inflow testing. The objects of research are groundwater deposits located in various tectonic structures of Eastern Siberia. The analysis of field study results involving researches of

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Huang, Chia-Chi, and Hsin-Fu Yeh. "Hydrogeological Parameter Determination in the Southern Catchments of Taiwan by Flow Recession Method." Water 11, no. 1 (2018): 7. http://dx.doi.org/10.3390/w11010007.

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The understanding of hydrogeological characteristics and groundwater flow processes in aquifers is crucial for the determination of sustainable groundwater resource development as well as hydrological management and planning. In the past, information on hydrogeological characteristics was mainly acquired through point field measurement such as borehole geophysical techniques and field aquifer hydraulic testing. However, in view of the cost limitations and scale applicability of these methods, low-flow recession analysis techniques that utilize streamflow data can be used as alternative low-cos

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Boffo, Carolina H., Tiago A. de Oliveira, Daniel Bayer da Silva, Rafael Manica, and Ana Luiza de O. Borges. "Continental-slope instability triggered by seepage: An experimental approach." Journal of Sedimentary Research 90, no. 8 (2020): 921–37. http://dx.doi.org/10.2110/jsr.2020.48.

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ABSTRACT Mass-transport complexes (MTCs), mass-transport deposits (MTDs), and associated facies and features are widely recognized in continental slopes around the world. In most current stratigraphic models of MTCs and MTDs, these submarine sediment failures are related to aquifer outflow (sapping, seepage) along continental slope fronts that originated during relative sea-level fall. We test a hypothetical scenario that is favored during early forced regression using reduced-scale physical simulation. A major underground subaerial hydraulic gradient is assumed to flow towards the basin depoc

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Burakov, M. M., V. G. Burkush, and M. M. Tynbayev. "On the restoration of the level of underground water after withdrawal from the layered aquifers with overflow." Proceedings of higher educational establishments. Geology and Exploration, no. 3 (June 28, 2019): 51–63. http://dx.doi.org/10.32454/0016-7762-2019-3-51-63.

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The patterns of restoration of the piezometric level of groundwater in the aquifer under test in a layered aquifer system with the overflow of water from the adjacent horizon after stopping the experimental constant-rate pumping tests, have been analyzed; the physico-mathematical model of piezometric level restoration has been formed and analyzed. It has been shown that the restoration of the level is carried out in the same way as after stopping the pumping from a pressure isolated aquifer. In other words, it has been assumed that pumping with a constant flow rate continues even after it has

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Gossmann, Simon, Stephen Denner, St John Herbert, et al. "Evaluating potential coal seam gas impacts to the Condamine Alluvium: an example of successful community involvement." APPEA Journal 56, no. 2 (2016): 546. http://dx.doi.org/10.1071/aj15052.

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The groundwater resources of the Condamine River Alluvial Aquifer (Condamine Alluvium) in Queensland have been developed in the past 60 years for irrigation, stock, domestic and other uses. Extraction of more than 55,000 mL/yr from this aquifer is critical to supporting the local irrigation industry. Existing and proposed coal seam gas development in the Surat Basin extends to underneath the western edge of the CA footprint and involves depressurisation of coals that form up to 10% of the Walloon Coal Measures (WCM) at some depth below the alluvium. Reduced groundwater availability from the al

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Darling, W. George, Daren C. Gooddy, Debbie White, Takuya Matsumoto, Liang-Feng Han, and Nicolo Romeo. "Testing tritium-helium groundwater dating in the Chalk aquifer of the Berkshire Downs, UK." GEOCHEMICAL JOURNAL 51, no. 5 (2017): 409–21. http://dx.doi.org/10.2343/geochemj.2.0457.

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Michalski, Andrew, and Joseph Torlucci. ""Testing" a Limestone Aquifer Using Water-Table Response to Storm Water Discharged into Sinkholes." Ground Water 26, no. 6 (1988): 751–60. http://dx.doi.org/10.1111/j.1745-6584.1988.tb00426.x.

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Seibertz, Klodwig Suibert Oskar, Marian Andrei Chirila, Jan Bumberger, Peter Dietrich, and Thomas Vienken. "Development of in-aquifer heat testing for high resolution subsurface thermal-storage capability characterisation." Journal of Hydrology 534 (March 2016): 113–23. http://dx.doi.org/10.1016/j.jhydrol.2015.12.013.

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Wagner, Valentin, Tao Li, Peter Bayer, Carsten Leven, Peter Dietrich, and Philipp Blum. "Thermal tracer testing in a sedimentary aquifer: field experiment (Lauswiesen, Germany) and numerical simulation." Hydrogeology Journal 22, no. 1 (2013): 175–87. http://dx.doi.org/10.1007/s10040-013-1059-z.

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Deng, Xiao Qiong, and Ji Dong Su. "The Development and Application of Slug Test in Hydrogeology." Applied Mechanics and Materials 268-270 (December 2012): 831–34. http://dx.doi.org/10.4028/www.scientific.net/amm.268-270.831.

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The slug test is a field-testing method to evaluate hydrogeological parameters by recording the instantaneous change of the underground water level. Basing on abroad development of slug test, this paper tried to measure some parameters of aquifer with middle and high permeability using high accuracy testing. According to field tests and existing pumping data, discussed difference of several theoretic model, analyzed and computed the hydrogeological parameters of a certain spot in Chang Chun, China by classical Cooper Model. At last, comparing with pumping test, the accuracy of the test was ver

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Priddle, M. W., R. E. Jackson, K. S. Novakowski, et al. "Migration and Fate of Aldicarb in the Sandstone Aquifer of Prince Edward Island." Water Quality Research Journal 22, no. 1 (1987): 173–86. http://dx.doi.org/10.2166/wqrj.1987.013.

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Abstract The persistence of aldicarb in groundwater of the fractured, sandstone aquifer of Prince Edward Island, Canada is assessed. Two potato fields were instrumented with nests of piezometers which were used in the hydraulic and chemical testing of the sandstone aquifer. Groundwaters were sampled and analysed for pH, EH, dissolved oxygen and ammonia, major ions and the toxic aldicarb species - aldicarb, aldicarb sulfoxide and aldicarb sulfone. Aldicarb persistence appears related to (1) its application at time of planting when soil water temperatures are low (&lt;10°C) and (2) the inhib

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Somogyvári, Márk, Peter Bayer, and Ralf Brauchler. "Travel-time-based thermal tracer tomography." Hydrology and Earth System Sciences 20, no. 5 (2016): 1885–901. http://dx.doi.org/10.5194/hess-20-1885-2016.

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Abstract. Active thermal tracer testing is a technique to get information about the flow and transport properties of an aquifer. In this paper we propose an innovative methodology using active thermal tracers in a tomographic setup to reconstruct cross-well hydraulic conductivity profiles. This is facilitated by assuming that the propagation of the injected thermal tracer is mainly controlled by advection. To reduce the effects of density and viscosity changes and thermal diffusion, early-time diagnostics are used and specific travel times of the tracer breakthrough curves are extracted. These

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Mabrouk, Marmar, Andreja Jonoski, Gualbert H. P. Oude Essink, and Stefan Uhlenbrook. "Assessing the Fresh–Saline Groundwater Distribution in the Nile Delta Aquifer Using a 3D Variable-Density Groundwater Flow Model." Water 11, no. 9 (2019): 1946. http://dx.doi.org/10.3390/w11091946.

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The Nile Delta Aquifer (NDA) is threatened by salt water intrusion (SWI). This article demonstrates an approach for identifying critical salinity concentration zones using a three-dimensional (3D) variable-density groundwater flow model in the NDA. An innovative procedure is presented for the delineation of salinity concentration in 2010 by testing different simulation periods. The results confirm the presence of saline groundwater caused by SWI in the north of the NDA. In addition, certain regions in the east and southwest of the NDA show increased salinity concentration levels, possibly due

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Bennett, Peter, Feng He, Dongye Zhao, Brian Aiken, and Lester Feldman. "In situ testing of metallic iron nanoparticle mobility and reactivity in a shallow granular aquifer." Journal of Contaminant Hydrology 116, no. 1-4 (2010): 35–46. http://dx.doi.org/10.1016/j.jconhyd.2010.05.006.

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Liebel, Heiko T., Kilian Huber, Bjørn S. Frengstad, Randi K. Ramstad, and Bjørge Brattli. "Thermal response testing of a fractured hard rock aquifer with and without induced groundwater flow." Bulletin of Engineering Geology and the Environment 71, no. 3 (2012): 435–45. http://dx.doi.org/10.1007/s10064-012-0422-y.

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Peterson, Curt D., and Sarah R. Doliber. "Groundwater Surface (GWS) Mapping by Ground Penetrating Radar (GPR) For Use in Protecting Freshwater Habitats, Water Quality, and Active Dune Landscapes, In the Florence Coastal Dune Sheet, Oregon, USA." Journal of Geography and Geology 11, no. 1 (2019): 13. http://dx.doi.org/10.5539/jgg.v11n1p13.

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Ground penetrating radar (GPR) profiling was performed in the Florence (FLOR) coastal dune sheet to test relations between remotely-sensed groundwater surface (GWS) trends, measured groundwater phreatic surfaces, and overlying freshwater features/habitats. Following preliminary GPR testing, the GWS trend mapping was employed in the north FLOR dune aquifer (17 km in length and 5 km in width), in anticipation of increasing development pressures on aquifer groundwater withdrawal by the City of Florence, Oregon. Several available technologies, including continuously-towed GPR profiling (5-8 km/hr)

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Bodin, Jacques. "MFIT 1.0.0: Multi-Flow Inversion of Tracer breakthrough curves in fractured and karst aquifers." Geoscientific Model Development 13, no. 6 (2020): 2905–24. http://dx.doi.org/10.5194/gmd-13-2905-2020.

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Abstract. More than half of the Earth's population depends largely or entirely on fractured or karst aquifers for their drinking water supply. Both the characterization and modeling of these groundwater reservoirs are therefore of worldwide concern. Artificial tracer testing is a widely used method for the characterization of solute (including contaminant) transport in groundwater. Tracer experiments consist of a two-step procedure: (1) introducing a conservative tracer-labeled solution into an aquifer, usually through a sinkhole or a well, and (2) measuring the concentration breakthrough curv

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Muzzillo, Rosalba, Livia Emanuela Zuffianò, Enzo Rizzo, et al. "Seawater Intrusion Proneness and Geophysical Investigations in the Metaponto Coastal Plain (Basilicata, Italy)." Water 13, no. 1 (2020): 53. http://dx.doi.org/10.3390/w13010053.

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The Metaponto coastal plain extends about 40 km along the Ionian coast, between the Sinni and Bradano Rivers (southern Italy). During the 20th century, the increases in modern irrigation systems, land reclamation works, the overexploitation of wells, and agricultural and industrial activities have deeply modified land use and groundwater availability and quality along the plain. These modifications negatively impacted the natural systems in terms of groundwater and soil salinization, magnifying the risks due to seawater intrusion. In this study, we explored the proneness to seawater intrusion,

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Pang, Dongdong, Feisheng Feng, Guanghui Jiang, Dongjing Xu, and Xiaohan Wang. "Experimental Study on Lateral Permeability Evolution of Sandstone under Seepage-Damage Coupling." Advances in Civil Engineering 2020 (October 29, 2020): 1–8. http://dx.doi.org/10.1155/2020/8861969.

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To analyze the internal pore evolution law of aquifer rock in a coal mining front under the coupling effect of stress and seepage and the influence on the water inrush performance of the working face, research on the working face was conducted to improve the RTR-1000 high-temperature and high-pressure rock triaxial mechanical testing system, using hollow cylindrical and complete sandstone samples and by considering the stress change law in the actual mining process as the reference loading path. At the initial stage of loading, the permeability of sandstone demonstrates a rapid downward trend

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Bajc, Andy F., Andrea S. Marich, Elizabeth H. Priebe, and Desmond R. B. Rainsford. "Evaluating the groundwater resource potential of the Dundas buried bedrock valley, southwestern Ontario: an integrated geological and hydrogeological case study." Canadian Journal of Earth Sciences 55, no. 7 (2018): 659–76. http://dx.doi.org/10.1139/cjes-2016-0224.

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Population growth in the groundwater-dependent municipalities of southwestern Ontario has prompted interest in the exploration for new, previously untapped, groundwater resources. In this study, the groundwater resource potential of the sediments infilling a deeply buried bedrock valley network centred beneath the Region of Waterloo and the counties of Brant and Hamilton–Wentworth are explored. The objectives of this study are to further refine valley location and geometry, understand infilling sediments and their hydrogeological properties, and characterize waters contained within the aquifer

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