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Journal articles on the topic 'Piezometric heads'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

MHAMDI, Rym, Taoufik HERMASSI, Fathia JARRAY, Mohamed Ali BEN ABDALLAH, Mohamed MECHERGUI, and Essaid BILAL. "SPATIO-TEMPORAL ANALYSIS OF THE GROMBALIA AQUIFER DYNAMICS--NORTHERN EAST OF TUNISIA." Carpathian Journal of Earth and Environmental Sciences 18, no. 2 (2023): 323–32. http://dx.doi.org/10.26471/cjees/2023/018/262.

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Aquifer maps are key tools for water resources management, and allow to characterize a water table distribution and variability. The Grombalia plain in the northeast part of Tunisia was studied to identify the origin of groundwater recharge and to specify the type of recharge in the whole study area. It aims to investigate the impact of recharge schemes on the piezometric evolution of the water table. Furthermore, the purpose is to investigate the origin and dominant factor of the recharge. The methodology of this work includes two methods of analysis of the dynamics of the piezometric heads o

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Wazeer, Adil, and Kaushalendra Kumar Dubey. "Study of Effect of Altered Piezometric Heads in Experimental Investigation of Bernoulli’s Equation." Asian Journal of Engineering and Applied Technology 8, no. 2 (2019): 16–18. http://dx.doi.org/10.51983/ajeat-2019.8.2.1129.

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Bernoulli’s equation is found to be one of the most popular topics of the elementary physics. The paper presents the experimental behavior of the famous Bernoulli’s equation when the piezometric heads are altered and varied with respect to the heads 10cm and 15cm. The value of h in centimeters have been recorded in altered time periods and heads and in all the nine tubes. The calculation of the total energy (E) by changing the heads is obtained and the results achieved while equating the graphs between the total energy and distance from the reference point by changing the heads has been comput

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Béjar-Pizarro, M., P. Ezquerro Martín, G. Herrera, et al. "Evaluation of the potential of InSAR time series to study the spatio-temporal evolution of piezometric levels in the Madrid aquifer." Proceedings of the International Association of Hydrological Sciences 372 (November 12, 2015): 29–32. http://dx.doi.org/10.5194/piahs-372-29-2015.

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Abstract. The Tertiary detritic aquifer of Madrid (TDAM), with an average thickness of 1500 m and a heterogeneous, anisotropic structure, supplies water to Madrid, the most populated city of Spain (3.2 million inhabitants in the metropolitan area). Besides its complex structure, a previous work focused in the north-northwest of Madrid city showed that the aquifer behaves quasi elastically trough extraction/recovery cycles and ground uplifting during recovery periods compensates most of the ground subsidence measured during previous extraction periods (Ezquerro et al., 2014). Therefore, the rel

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Engelhardt, I., J. G. De Aguinaga, H. Mikat, C. Schüth, O. Lenz, and R. Liedl. "Complexity versus simplicity: an example of groundwater model ranking with the Akaike Information Criterion." Hydrology and Earth System Sciences Discussions 9, no. 8 (2012): 9687–714. http://dx.doi.org/10.5194/hessd-9-9687-2012.

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Abstract. A groundwater model characterized by a lack of field data to estimate hydraulic model parameters and boundary conditions combined with many piezometric head observations was investigated concerning model uncertainty. Different conceptual models with a stepwise increase from 0 to 30 adjustable parameters were calibrated using PEST. Residuals, sensitivities, the Akaike Information Criterion (AIC), and the likelihood of each model were computed. As expected, residuals and standard errors decreased with an increasing amount of adjustable model parameters. However, the model with only 15

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Townsend, Ronald D., Vinod K. Garga, and David Hansen. "Finite difference modelling of the variation in piezometric head within a rockfill embankment." Canadian Journal of Civil Engineering 18, no. 2 (1991): 254–63. http://dx.doi.org/10.1139/l91-030.

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The subject of flow through rockfill is of increasing interest in Canada. Rockfill drains are presently used by mining companies in order to permit existing creeks to flow through the base of mine waste dumps. There is potential for the use of flow through rockfill dams for mini-hydro schemes because the adoption of a costly concrete spillway may be unnecessary in some cases. An important issue in the design of flow through rockfill structures is the pore pressure distribution and the associated hydraulic gradients, neither of which are associated with Darcy's law. For such determinations the

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Islam, Mazeda, Marc Van Camp, Delwar Hossain, Md Mizanur Rahman Sarker, Shahina Khatun, and Kristine Walraevens. "Impacts of Large-Scale Groundwater Exploitation Based on Long-Term Evolution of Hydraulic Heads in Dhaka City, Bangladesh." Water 13, no. 10 (2021): 1357. http://dx.doi.org/10.3390/w13101357.

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Dhaka city has emerged as the fastest-growing megacity, having more than 20 million inhabitants, with a growth rate of 3.62%. Unplanned and rapid urbanization, coupled with exponential population growth, has significantly altered the groundwater dynamics in Dhaka city. This study concentrates on the evolution of long-term piezometric heads of the Upper Dupi Tila aquifer (UDA) and the Middle Dupi Tila aquifer (MDA) based on long-term hydrographs, piezometric maps and synthetic graphical overviews of piezometric trends. Due to over-exploitation, the piezometric level (PL) has declined deeper tha

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Lakusic, Stjepan. "Numerical simulations of hydraulic transients in PHPP Fužine." Journal of the Croatian Association of Civil Engineers 74, no. 02 (2022): 135–43. http://dx.doi.org/10.14256/jce.3363.2021.

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Hydraulic transients in pumping hydroelectric power plant (PHPP) Fužine were simulated with 1D unsteady pipe flow model. High accuracy of the model was accomplished with the use of nonconservative formulation of unsteady pipe flow model incorporating unsteady friction model and second order flux limited numerical scheme. Simulation results show very good agreement between the computed and measured piezometric heads, both in amplitude and frequency of the oscillation.

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Janno, J. "ON DETERMINING EXTREMAL PIEZOMETRIC HEADS IN ONE-DIMENSIONAL MODEL OF GROUNDWATER FLOW." Proceedings of the Estonian Academy of Sciences. Physics. Mathematics 41, no. 3 (1992): 182. http://dx.doi.org/10.3176/phys.math.1992.3.02.

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9

Habets, F., S. Gascoin, S. Korkmaz, et al. "Multi-model comparison of a major flood in the groundwater-fed basin of the Somme River (France)." Hydrology and Earth System Sciences Discussions 6, no. 5 (2009): 6135–80. http://dx.doi.org/10.5194/hessd-6-6135-2009.

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Abstract. The Somme River Basin is located above a chalk aquifer and the discharge of the somme River is highly influenced by groundwater inflow (90% of river discharge is baseflow). In 2001, the Somme River Basin suffered from a major flood causing damages estimated to 100 million Euro (Deneux and Martin, 2001). The purpose of the present research is to evaluate the ability of four hydrologic models to reproduce flood events in the Somme River Basin over an 18-year period, by comparison with observed river discharge and piezometric head as well as satellite-derived extents of the flooded area

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10

Chapuis, Robert P., Michel Soulié, and Georges Sayegh. "Laboratory modelling of field permeability tests in cased boreholes." Canadian Geotechnical Journal 27, no. 5 (1990): 647–58. http://dx.doi.org/10.1139/t90-078.

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Field permeability tests in cased boreholes have been modelled in a sand tank with controlled and measured hydraulic conditions. The testing program included "end of the casing" and "Lefranc" tests, as described in Canadian standards 2501-135 and 2501-130, for field permeability tests in a casing driven in a granular soil (valid for 10−5 < K < 10−2 cm/s approximately). The theoretical solutions for these tests require a list of assumptions that may be difficult to satisfy under field conditions. The method for detecting the common error in the assumed piezometric level gave in all cases

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Bergant, Anton, and Uroš Karadžić. "NUMERICAL AND EXPERIMENTAL INVESTIGATIONS OF TRANSIENT CAVITATING PIPE FLOW." Journal of Energy Technology 8, no. 2 (2024): 31–42. https://doi.org/10.18690/jet.8.2.31-42.2015.

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This paper investigates the effects of transient vaporous cavitation caused by the closure of the downstream end ball valve against the discharge. Numerical results are compared with the results of measurements in the simple reservoir-pipeline-valve apparatus. Pressures measured at the end points and at two equidistant positions along the pipeline are compared with computational results as piezometric heads. Comparisons between the results of two distinct water column separation tests and numerical simulations using an advanced discrete gas cavity model show good agreement. Two distinct column

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Riha, Jaromir, and Lubomir Petrula. "Experimental Research on Backward Erosion Piping Progression." Water 15, no. 15 (2023): 2749. http://dx.doi.org/10.3390/w15152749.

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Internal erosion is caused by seepage body forces acting on the soil particles. One of the most dangerous modes of internal erosion at hydraulic structures is backward erosion piping, which usually initiates at the downstream end of a seepage path, e.g., at the downstream toe of the dam. The progress of backward erosion and the development of erosion pipes were tested in a newly developed laboratory device for three types of sand with grain sizes of 0/2, 0.25/2, and 0.25/1. The piezometric head along the gradually developing seepage “pipe” was observed by seventeen piezometers and seven pressu

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Harizi, Khaled, Mohamed Reda Menani, Nabil Chabour, and Sofiane Labar. "Initial assessment of the groundwater flow and budget using Geographic Information System, MODFLOW-2005 and the FREEWAT modeling tool in Bouteldja coastal aquifer (Northern East of Algeria)." Acque Sotterranee - Italian Journal of Groundwater 10, no. 3 (2021): 41–51. http://dx.doi.org/10.7343/as-2021-511.

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The Bouteldja coastal aquifer is one of the most important groundwater resources in North eastern of Algeria. The region is under a sub-humid climate with an average rainfall of 600-880 mm/y. The unconfined aquifer is constituted of Quaternary sands formations. The hydrogeological characteristics were determined based on previous reports. A very important inflow recharges the sandy aquifer in the Southeastern boundary, in relation to a fault network system linking the aquifer and the Obeira Lake area. Another inflow is observed at the Southern boundary in relation to the exchanges with the all

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Kurtz, Wolfgang, Harrie-Jan Hendricks Franssen, Hans-Peter Kaiser, and Harry Vereecken. "Joint assimilation of piezometric heads and groundwater temperatures for improved modeling of river-aquifer interactions." Water Resources Research 50, no. 2 (2014): 1665–88. http://dx.doi.org/10.1002/2013wr014823.

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Petrula, Lubomír, and Jaromír Říha. "A new small-scale experimental device for testing backward erosion piping." Journal of Hydrology and Hydromechanics 70, no. 3 (2022): 376–84. http://dx.doi.org/10.2478/johh-2022-0023.

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Abstract Backward erosion piping is driven by seepage forces acting on the soil grains at the downstream end of the seepage path. A new device for the laboratory testing of backward erosion progression was developed and tested. The device consists of a plexiglass prism at which the seepage path has been predefined. The prism was equipped with an inflow consisting of gravel separated from tested sand by a strainer. The hydraulic gradient along the seepage pipe was observed by a set of piezometers and pressure cells, and the seepage discharge was measured volumetrically. The transported sediment

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Colombani, Nicolò, Mattia Gaiolini, Gianluigi Busico, and Matteo Postacchini. "Quantifying the Impact of Evapotranspiration at the Aquifer Scale via Groundwater Modelling and MODIS Data." Water 13, no. 7 (2021): 950. http://dx.doi.org/10.3390/w13070950.

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In shallow alluvial aquifers characterized by coarse sediments, the evapotranspiration rates from groundwater are often not accounted for due to their low capillarity. Nevertheless, this assumption can lead to errors in the hydrogeological balance estimation. To quantify such impacts, a numerical flow model using MODFLOW was set up for the Tronto river alluvial aquifer (Italy). Different estimates of evapotranspiration rates were retrieved from the online Moderate Resolution Imaging Spectroradiometer (MODIS) database and used as input values. The numerical model was calibrated against piezomet

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17

Nourani, Vahid, Elnaz Sharghi, and Mohammad Hossein Aminfar. "Integrated ANN model for earthfill dams seepage analysis: Sattarkhan Dam in Iran." Artificial Intelligence Research 1, no. 2 (2012): 22. http://dx.doi.org/10.5430/air.v1n2p22.

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Piezometric heads in the core of Sattarkhan earthfill dam in Iran have been analyzed in this paper via Artificial Neural Network (ANN). Single and integrated ANN models were trained and verified using each piezometer’s data, and also the water levels on the up and downstream of the dam. Therefore, in the single ANN modeling a single ANN was developed for each piezometer, whereas in the integrated ANN modeling only a unique ANN was trained for all piezometers at different cross sections of the dam. Three-layered Perceptron ANN trained with Back Propagation Levenberg-Marquardt scheme was employe

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18

Leskovets, I. V., A. A. Grats, and V. D. Rogozhyn. "Dagnostics of hydraulic drive of airfield equipment." Russian Automobile and Highway Industry Journal 22, no. 3 (2025): 356–67. https://doi.org/10.26518/2071-7296-2025-22-3-356-367.

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Introduction. The article presents an overview of modern diagnostic methods for mobile machines. The directions of diagnosis are outlined: with the applications of algorithms based on the use of a complex of controllers designed to collect and store up-to-date diagnostic information; with the help of artificial intelligence allowing to perform step-by-step diagnostics on current information about the speed of hydraulic motors, pressure and fluid velocity. The article also demonstrates the ways for using parametric statistical methods that are possible to determine the state of the working flui

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19

Xun, Zhou, Zhou Haiyan, and Zhang Li. "Characteristics of Piezometric heads and determination of fresh water–salt water interface in the coastal zone near Beihai, China." Environmental Geology 54, no. 1 (2007): 67–73. http://dx.doi.org/10.1007/s00254-007-0793-8.

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20

Xun, Zhou, Zhou Haiyan, and Zhang Li. "Characteristics of piezometric heads and determination of fresh water–salt water interface in the coastal zone near Beihai, China." Environmental Geology 54, no. 1 (2007): 75. http://dx.doi.org/10.1007/s00254-007-1158-z.

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Li, L., H. Zhou, H. J. Hendricks Franssen, and J. J. Gómez-Hernández. "Groundwater flow inverse modeling in non-MultiGaussian media: performance assessment of the normal-score Ensemble Kalman Filter." Hydrology and Earth System Sciences Discussions 8, no. 4 (2011): 6749–88. http://dx.doi.org/10.5194/hessd-8-6749-2011.

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Abstract. The normal-score ensemble Kalman filter (NS-EnKF) is tested on a synthetic aquifer characterized by the presence of channels with a bimodal distribution of its hydraulic conductivities. Fourteen scenarios are analyzed which differ among them in one or various of the following aspects: the prior random function model, the boundary conditions of the flow problem, the number of piezometers used in the assimilation process, or the use of covariance localization in the implementation of the Kalman filter. The performance of the NS-EnKF is evaluated through the ensemble mean and variance m

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22

Stolte, W. J., D. J. McFarlane, and R. J. George. "Flow systems, tree plantations, and salinisation in a Western Australian catchment." Soil Research 35, no. 5 (1997): 1213. http://dx.doi.org/10.1071/s96066.

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A lower hillslope in the Western Australian wheatbelt had become waterlogged and saline by 1981, when close-spaced rows of eucalypts were planted in blocks both in and adjacent to the discharge area and piezometers were established on the site. We analysed the trends in the piezometric heads and salinity concentrations over the period of record. We also modelled the hillslope profile using finite element analysis to determine the water flow mechanisms and to see how a change in vegetation in the upland area would affect the waterlogging and salinity. Piezometric levels under the trees decrease

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Li, L., H. Zhou, H. J. Hendricks Franssen, and J. J. Gómez-Hernández. "Groundwater flow inverse modeling in non-MultiGaussian media: performance assessment of the normal-score Ensemble Kalman Filter." Hydrology and Earth System Sciences 16, no. 2 (2012): 573–90. http://dx.doi.org/10.5194/hess-16-573-2012.

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Abstract. The normal-score ensemble Kalman filter (NS-EnKF) is tested on a synthetic aquifer characterized by the presence of channels with a bimodal distribution of its hydraulic conductivities. This is a clear example of an aquifer that cannot be characterized by a multiGaussian distribution. Fourteen scenarios are analyzed which differ among them in one or various of the following aspects: the prior random function model, the boundary conditions of the flow problem, the number of piezometers used in the assimilation process, or the use of covariance localization in the implementation of the

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Ferhati, Ahmed, Nour El Houda Belazreg, Hakim Djafer Khodja, and Ratiba Mitiche-Kettab. "Groundwater dynamics simulation in Hodna (Algeria): aquifer modeling approach." STUDIES IN ENGINEERING AND EXACT SCIENCES 5, no. 2 (2024): e10424. http://dx.doi.org/10.54021/seesv5n2-512.

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Groundwater modeling using MODFLOW and GIS tools is crucial for understanding the complexities of groundwater dynamics in Algeria's semi-arid and arid climates. This study focuses on the quantitative assessment of the phreatic aquifer within the Hodna aquifer system over the period of 1973-2005. The study employs MODFLOW and GIS tools to model groundwater flow. Calibration and validation processes, using a trial and error technique, refine the models to understand water table behaviors and drawdown within the Hodna basin. Calibration efforts yield insights into groundwater dynamics, particular

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Říha, Jaromír, and Jan Jandora. "Pressure conditions in the hole erosion test." Canadian Geotechnical Journal 52, no. 1 (2015): 114–19. http://dx.doi.org/10.1139/cgj-2013-0474.

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The hole erosion test (HET) is used in the study of soil erosion in the case of what is known as “piping” when concentrated leaks occur. The HET enables the determination of soil erosion characteristics such as the critical shear stress along the pre-formed hole (pipe) and the coefficient of soil erosion. Normally, in the HET, the hydraulic gradient is determined from the difference between the piezometric heads measured at the inflow and outflow chambers (upstream and downstream of the soil specimen). Hydraulic analysis shows that such measurements ignore losses at the entrance and exit of th

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Offer, Maike, Samuel Weber, Michael Krautblatter, Ingo Hartmeyer, and Markus Keuschnig. "Pressurised water flow in fractured permafrost rocks revealed by borehole temperature, electrical resistivity tomography, and piezometric pressure." Cryosphere 19, no. 1 (2025): 485–506. https://doi.org/10.5194/tc-19-485-2025.

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Abstract. Rock slope instabilities and failures from permafrost rocks are among the most significant alpine hazards in a changing climate and represent considerable threats to high-alpine infrastructure. While permafrost degradation is commonly attributed to rising air temperature and slow thermal heat propagation in rocks, the profound impact of water flow in bedrock permafrost on warming processes is increasingly recognised. However, quantifying the role of water flow remains challenging, primarily due to the complexities associated with direct observation and the transient nature of water d

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Vergnes, Jean-Pierre, Nicolas Roux, Florence Habets, et al. "The AquiFR hydrometeorological modelling platform as a tool for improving groundwater resource monitoring over France: evaluation over a 60-year period." Hydrology and Earth System Sciences 24, no. 2 (2020): 633–54. http://dx.doi.org/10.5194/hess-24-633-2020.

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Abstract. The new AquiFR hydrometeorological modelling platform was developed to provide short-to-long-term forecasts for groundwater resource management in France. This study aims to describe and assess this new tool over a long period of 60 years. This platform gathers in a single numerical tool several hydrogeological models covering much of the French metropolitan area. A total of 11 aquifer systems are simulated through spatially distributed models using either the MARTHE (Modélisation d'Aquifères avec un maillage Rectangulaire, Transport et HydrodynamiquE; Modelling Aquifers with Rectang

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Jeannot, Benjamin, Sylvain Weill, David Eschbach, Laurent Schmitt, and Frederick Delay. "Assessing the effect of flood restoration on surface–subsurface interactions in Rohrschollen Island (Upper Rhine river – France) using integrated hydrological modeling and thermal infrared imaging." Hydrology and Earth System Sciences 23, no. 1 (2019): 239–54. http://dx.doi.org/10.5194/hess-23-239-2019.

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Abstract. Rohrschollen Island is an artificial island of the large Upper Rhine river whose geometry and hydrological dynamics are the result of engineering works during the 19th and 20th centuries. Before its channelization, the Rhine river was characterized by an intense hydromorphological activity which maintained a high level of biodiversity along the fluvial corridor. This functionality considerably decreased during the two last centuries. In 2012, a restoration project was launched to reactivate typical alluvial processes, including bedload transport, lateral channel dynamics, and surface

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Silva Júnior, Gerson Cardoso da, Carlos Eduardo Braga, and Ingrid De Carvalho Lage. "Hydrogeological study of mangrove areas around Guanabara Bay, Rio de Janeiro, Brazil." Anuário do Instituto de Geociências 26 (January 1, 2003): 92–100. http://dx.doi.org/10.11137/2003_0_92-100.

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The study area covers part of the mangrove belt located around Guanabara Bay, Rio de Janeiro, Brazil. Representing a continental-marine transition, the mangrove ecosystem is very susceptible to environmental variations and impacts. The vegetation cover plays an important role in prevention of erosion and contamination processes in those areas. An ongoing extensive research effort in the Petrochemical Complex of Duque de Caxias, Rio de Janeiro State, Brazil, focuses on the man-induced changes in the physical environment (soils, groundwater flow system, type and volumes of contaminants, geochemi

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Steiness, Jessen, Spitilli, van’t Veen, Højberg, and Engesgaard. "The Role of Management of Stream–Riparian Zones on Subsurface–Surface Flow Components." Water 11, no. 9 (2019): 1905. http://dx.doi.org/10.3390/w11091905.

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A managed riparian lowland in a glacial landscape (Holtum catchment, Denmark) was studied to quantify the relative importance of subsurface and surface flow to the recipient stream. The hydrogeological characterization combined geoelectrical methods, lithological logs, and piezometric heads with monthly flow measurements of springs, a ditch, and a drain, to determine seasonality and thereby infer flow paths. In addition, groundwater discharge through the streambed was estimated using temperature and water-stable isotopes as tracers. The lowland received large groundwater inputs with minimal se

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L.O.Onundi, Elinwa A.U., and Suleiman B. "AN EXPERIMENTAL DETERMINATION OF NET PRESSURE COEFFICIENT FOR MULTI-STOREY BUILDING USING AN EIFFEL TYPE WIND TUNNEL TO GENERATE A COMPRESSIBLE AERODYNAMIC FREE STREAM FLOW." Continental J. Environmental Design and Management 2, no. 1 (2012): 18–32. https://doi.org/10.5281/zenodo.824753.

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The research work focuses on the experimental determination of net pressure coefficient for 72m, 20-storey building using an Eiffel type wind tunnel to generate a compressible aerodynamic free stream flow. By using mathematical models developed by notable scholars; some of the grey areas leading to confusion in the use of the terms compressible and incompressible flow were discussed. Subsequently, two models of scale 1: 300 for model height were constructed with Afra timber because it was easy to machine to various shapes and sizes. Pipettes, brazen and suitable flexible rubber tubes were used

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La Licata, Ivana, Loris Colombo, Vincenzo Francani, and Luca Alberti. "Hydrogeological Study of the Glacial—Fluvioglacial Territory of Grandate (Como, Italy) and Stochastical Modeling of Groundwater Rising." Applied Sciences 8, no. 9 (2018): 1456. http://dx.doi.org/10.3390/app8091456.

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On November 2014, the Municipality of Grandate, near Lake Como, had to deal with a great emergency that was caused by the flooding of factory undergrounds. The authors realized a hydrogeological study to understand the causes of groundwater flooding and to prepare a pre-feasibility study concerning possible actions for groundwater control. The hydrogeological structure is rather complex and required time-consuming reconstruction of the conceptual site model. A transient numerical model was developed to analyse the system behaviour in different scenarios. The flow model was calibrated in a stea

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Secci, Daniele, Godoy Vanessa A., and Jaime Gómez-Hernández. "Physics-Informed Neural Networks for solving transient unconfined groundwater flow." Physics-Informed Neural Networks for solving transient unconfined groundwater flow 182 (November 14, 2023): 105494. https://doi.org/10.1016/j.cageo.2023.105494.

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Neural networks excel in various machine learning applications; however, they lack the physical interpretability and constraints crucial for numerous scientific and engineering problems. This limitation hinders their ability to accurately capture and predict complex physical systems' behavior, potentially yielding inaccurate or unreliable results. Physics-Informed Neural Networks (PINNs) are a class of machine learning models that integrate the power of neural networks with the physical laws governing natural phenomena. PINNs provide an effective tool for solving intricate physical problems, r

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Gaiolini, Mattia, Nicolò Colombani, Gianluigi Busico, Fabrizio Rama, and Micòl Mastrocicco. "Impact of Boundary Conditions Dynamics on Groundwater Budget in the Campania Region (Italy)." Water 14, no. 16 (2022): 2462. http://dx.doi.org/10.3390/w14162462.

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Groundwater budgets and fluxes are affected by human activities and climate change. Numerical models are cost-effective tools to investigate the different components of the hydrologic cycle. In this study, a groundwater flow model of the unconfined aquifers of the Campania region (Italy) has been developed and calibrated in Processing Modflow 11, resulting in an accurate assessment of groundwater fluxes and their trends over fifteen years (2000–2015). The model was implemented using a high-resolution grid to capture small hydrogeological features such as wells and rivers and informed by time v

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Le Ravalec, Mickaële, and Emmanuel Mouche. "Calibrating transmissivities from piezometric heads with the gradual deformation method: An application to the Culebra Dolomite unit at the Waste Isolation Pilot Plant (WIPP), New Mexico, USA." Journal of Hydrology 472-473 (November 2012): 1–13. http://dx.doi.org/10.1016/j.jhydrol.2012.08.053.

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Ngenzebuhoro, Pierre Claver, Alain Dassargues, Tarik Bahaj, Philippe Orban, Ilias Kacimi, and Louis Nahimana. "Groundwater Flow Modeling: A Case Study of the Lower Rusizi Alluvial Plain Aquifer, North-Western Burundi." Water 13, no. 23 (2021): 3376. http://dx.doi.org/10.3390/w13233376.

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The study area, in northwestern Burundi, is an alluvial plain consisting of fine clayey sands and coarse sands with mixed lithology. The aquifer of the lower Rusizi plain could be considered as confined under a clay layer. A 2D horizontal groundwater flow model was developed under steady-state conditions using the Modflow software. The study aims to determine the most productive areas of this confined alluvial aquifer and the main aquifer inflow and outflow values together with the recharge and river–aquifer interactions. The groundwater potential is dependent on the spatial distribution of hy

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Siena, Martina, and Monica Riva. "Impact of geostatistical reconstruction approaches on model calibration for flow in highly heterogeneous aquifers." Stochastic Environmental Research and Risk Assessment 34, no. 10 (2020): 1591–606. http://dx.doi.org/10.1007/s00477-020-01865-2.

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Abstract Our study is aimed at assessing the extent at which relying on differing geostatistical approaches may affect characterization of the connectivity of geomaterials (or facies) and, in turn, model calibration outputs in highly heterogeneous aquifers. We set our study within a probabilistic framework, by relying on a numerical Monte Carlo (MC) approach. The reconstruction of the spatial distribution of geomaterials and flow simulations are patterned after a field scenario corresponding to the aquifer system serving the city of Bologna (Northern Italy). Two collections of MC realizations

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Vergnes, J. P., B. Decharme, R. Alkama, E. Martin, F. Habets, and H. Douville. "A Simple Groundwater Scheme for Hydrological and Climate Applications: Description and Offline Evaluation over France." Journal of Hydrometeorology 13, no. 4 (2012): 1149–71. http://dx.doi.org/10.1175/jhm-d-11-0149.1.

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Abstract Despite their potential influences on surface water and climate, groundwater processes are generally not represented in climate models. Here, a simple groundwater scheme including two-dimensional flow dynamics and accounting for groundwater–river exchanges is introduced into the global Total Runoff Integrated Pathways (TRIP) river routing model coupled to the Météo-France climate model. This original scheme is tested in offline mode over France at high () and low (0.5°) resolution against a dense network of river discharge and water table observations over the 1970–2010 period, and is

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Rusli, Steven Reinaldo, Victor F. Bense, Syed M. T. Mustafa, and Albrecht H. Weerts. "The impact of future changes in climate variables and groundwater abstraction on basin-scale groundwater availability." Hydrology and Earth System Sciences 28, no. 22 (2024): 5107–31. http://dx.doi.org/10.5194/hess-28-5107-2024.

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Abstract. Groundwater is under pressure from a changing climate and increasing anthropogenic demands. In this study, we project the effect of these two processes onto future groundwater status. Climate projections of Representative Concentration Pathway 4.5 (RCP4.5) and Representative Concentration Pathway 8.5 (RCP8.5) from the Coupled Model Intercomparison Project Phase 6 (CMIP6) drive a one-way coupled fully distributed hydrological and groundwater model. In addition, three plausible groundwater abstraction scenarios with diverging predictions from increasing, constant, and decreasing volume

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Majour, Habiba, Azzedine Hani, and Larbi Djabri. "Salinity and modelling of the Annaba aquifer system, North-East of Algeria." Journal of Water and Land Development 37, no. 1 (2018): 113–20. http://dx.doi.org/10.2478/jwld-2018-0030.

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Abstract The potentiometer area in the Annaba basin, covering an area of 264 km2, has declined considerably since 1995. The analysis of the chronological hydrographs (1991–2009) of the piezometric observations shows that this decline is related to about twenty years (20 years) drought that began in 1991. To synthesize hydrological data and study regional changes in aquifer interactions caused by changes in discharge, and determine the contamination of aquifers by salty intrusion in coastal areas, and making forecasts by the year 2023, a multi-layered transient model as well as a solute transpo

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Schaefer, Mark E., and H. F. Hemond. "A Low-Cost System to Remotely Measure Piezometric Head." Groundwater Monitoring & Remediation 6, no. 2 (1986): 87–91. http://dx.doi.org/10.1111/j.1745-6592.1986.tb01245.x.

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KAWATANI, Takeshi, Shigeru OZAKI, and Kouji FUJIE. "Estimation of Boundary Flux and Transmissivity from Piezometric Head Data." PROCEEDINGS OF THE JAPANESE CONFERENCE ON HYDRAULICS 33 (1989): 223–28. http://dx.doi.org/10.2208/prohe1975.33.223.

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Graham, Wendy D., and Claude D. Tankersley. "Forecasting piezometric head levels in the Floridan Aquifer: A Kalman Filtering Approach." Water Resources Research 29, no. 11 (1993): 3791–800. http://dx.doi.org/10.1029/93wr01813.

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Van Lent, Thomas, and Peter K. Kitanidis. "A numerical spectral approach for the derivation of piezometric head covariance functions." Water Resources Research 25, no. 11 (1989): 2287–98. http://dx.doi.org/10.1029/wr025i011p02287.

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Venetis, J. "ANALYTIC EVALUATION OF PIEZOMETRIC HEAD FOR A CREEPING FLOW PAST A FULLY CONSTRAINED OBSTACLE." Advances in Differential Equations and Control Processes 27 (May 11, 2022): 163–79. http://dx.doi.org/10.17654/0974324322019.

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Wang, Ling, Fujun Wang, Bryan William Karney, Ahmad Malekpour, and Zhengwei Wang. "Influence of velocity head on filling transients in a branched pipeline." Engineering Computations 35, no. 7 (2018): 2502–13. http://dx.doi.org/10.1108/ec-11-2017-0459.

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Purpose The velocity head is usually neglected in the energy equation for a pipeline junction when one-dimensional (1D) hydraulic transient flow is solved by method of characteristics. The purpose of this paper is to investigate the effect of velocity head on filling transients in a branched pipeline by an energy equation considering velocity head. Design/methodology/approach An interface tracking method is used to locate the air–water interface during pipeline filling. The pressured pipe flow is solved by a method of characteristics. A discrete gas cavity model is included to permit the occur

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Abedini, M. J., M. Nasseri, and A. Ansari. "Cluster-based ordinary kriging of piezometric head in West Texas/New Mexico – Testing of hypothesis." Journal of Hydrology 351, no. 3-4 (2008): 360–67. http://dx.doi.org/10.1016/j.jhydrol.2007.12.030.

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Wen, Xian-Huan, J. Jaime Gómez-Hernandez, José E. Capilla, and Andrés Sahuquillo. "Significance of conditioning to piezometric head data for predictions of mass transport in groundwater modeling." Mathematical Geology 28, no. 7 (1996): 951–68. http://dx.doi.org/10.1007/bf02066011.

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Chapuis, Robert P. "Borehole variable-head permeability tests in compacted clay liners and covers." Canadian Geotechnical Journal 36, no. 1 (1999): 39–51. http://dx.doi.org/10.1139/t98-091.

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The performance of clayey liners and covers is assessed by several methods including borehole variable-head permeability (k) tests. Different interpretations of the end-of-casing and Lefranc tests are discussed. In Quebec, most tests have been interpreted using the velocity-graph method. Its equations are presented and differences are illustrated by examples. Numerical simulations confirm the validity of the velocity-graph method. It eliminates a frequent error in the k value resulting from a poor evaluation of the piezometric level for the test. Using an incorrect interpretation method may yi

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Abedini, M. J., M. Nasseri, and D. H. Burn. "The use of a genetic algorithm-based search strategy in geostatistics: application to a set of anisotropic piezometric head data." Computers & Geosciences 41 (April 2012): 136–46. http://dx.doi.org/10.1016/j.cageo.2011.08.024.

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