Accedi

Bibliografie tematiche / Aquitard / Articoli di riviste

Segui questo link per vedere altri tipi di pubblicazioni sul tema: Aquitard.

Articoli di riviste sul tema "Aquitard"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 29 gennaio 2023

Cita una fonte nei formati APA, MLA, Chicago, Harvard e in molti altri stili

Scegli il tipo di fonte:

Vedi i top-50 articoli di riviste per l'attività di ricerca sul tema "Aquitard".

Accanto a ogni fonte nell'elenco di riferimenti c'è un pulsante "Aggiungi alla bibliografia". Premilo e genereremo automaticamente la citazione bibliografica dell'opera scelta nello stile citazionale di cui hai bisogno: APA, MLA, Harvard, Chicago, Vancouver ecc.

Puoi anche scaricare il testo completo della pubblicazione scientifica nel formato .pdf e leggere online l'abstract (il sommario) dell'opera se è presente nei metadati.

Vedi gli articoli di riviste di molte aree scientifiche e compila una bibliografia corretta.

1

Wang, Quanrong, Junxia Wang, Hongbin Zhan, and Wenguang Shi. "New model of reactive transport in a single-well push–pull test with aquitard effect and wellbore storage." Hydrology and Earth System Sciences 24, no. 8 (August 18, 2020): 3983–4000. http://dx.doi.org/10.5194/hess-24-3983-2020.

Testo completo

Abstract (sommario):

Abstract. The model of single-well push–pull (SWPP) test has been widely used to investigate reactive radial dispersion in remediation or parameter estimation of in situ aquifers. Previous analytical solutions only focused on a completely isolated aquifer for the SWPP test, excluding any influence of aquitards bounding the tested aquifer, and ignored the wellbore storage of the chaser and rest phases in the SWPP test. Such simplification might be questionable in field applications when test durations are relatively long because solute transport in or out of the bounding aquitards is inevitable

Gli stili APA, Harvard, Vancouver, ISO e altri

2

Shaw, R. Joel, and M. Jim Hendry. "Hydrogeology of a thick clay till and Cretaceous clay sequence, Saskatchewan, Canada." Canadian Geotechnical Journal 35, no. 6 (December 1, 1998): 1041–52. http://dx.doi.org/10.1139/t98-060.

Testo completo

Abstract (sommario):

Clay-rich glacial till and Cretaceous clay are common throughout the Interior Plains of North America. Quantifying groundwater flow through these aquitards has implications for solute transport in aquitards and protection of underlying aquifers. Groundwater flow through a two-tiered aquitard system was investigated using laboratory and field methods at a test site in Saskatchewan, Canada. The aquitard system consists of 80 m of uniform, plastic clay-rich Battleford till (deposited 12-18 ka BP) disconformably overlying 77 m of late Cretaceous plastic marine clay (Snakebite Member, deposited 70-

Gli stili APA, Harvard, Vancouver, ISO e altri

3

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 (September 30, 2021): 299–310. http://dx.doi.org/10.15625/1859-3097/16431.

Testo completo

Abstract (sommario):

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

Gli stili APA, Harvard, Vancouver, ISO e altri

4

Murray, Titus A., and William L. Power. "A framework for inclusion of faults in coal seam gas risk assessments." APPEA Journal 61, no. 2 (2021): 695. http://dx.doi.org/10.1071/aj20066.

Testo completo

Abstract (sommario):

Assessments for coal seam gas (CSG) projects may be required to consider the potential hydrological impacts of faults on surface and near-surface groundwater assets. This study presents three distinct end-member geological scenarios and outlines methods for characterising fault-related groundwater flow within a risk assessment context. Scenario 1: a regional aquitard isolates the water assets from the coal seams. There is little risk of leakage across the aquitard because there are no faults, or because the faults have maximum displacements less than the thickness of the aquitard. Scenario 2:

Gli stili APA, Harvard, Vancouver, ISO e altri

5

Burbey, Thomas J. "Parameter estimation of a multiple aquifer-aquitard system from a single extensometer record: Las Vegas, Nevada, USA." Proceedings of the International Association of Hydrological Sciences 382 (April 22, 2020): 51–56. http://dx.doi.org/10.5194/piahs-382-51-2020.

Testo completo

Abstract (sommario):

Abstract. The purpose of this investigation is to develop a semi-analytical procedure for quantifying aquifer and aquitard properties from a single extensometer record in lieu of the time-consuming development of more complex numerical models to quantify and constrain these parameter values. Despite a limited 12-year record and the fact that water levels both decline and increase on an annual basis, estimates of both aquifer and aquitard parameters have been reasonably estimated at the Lorenzi extensometer site in Las Vegas Valley, Nevada when compared to the estimates developed numerically. T

Gli stili APA, Harvard, Vancouver, ISO e altri

6

Chuang, M. H., C. S. Huang, G. H. Li, and H. D. Yeh. "Groundwater fluctuations in heterogeneous coastal leaky aquifer systems." Hydrology and Earth System Sciences Discussions 7, no. 4 (July 9, 2010): 4473–99. http://dx.doi.org/10.5194/hessd-7-4473-2010.

Testo completo

Abstract (sommario):

Abstract. In the past, the coastal leaky aquifer system, including an unconfined aquifer on the top, a confined aquifer at the bottom, and an aquitard in between, was commonly assumed to be homogeneous and of an infinite extent in the horizontal direction. The leaky aquifer system may however be nonhomogeneous and of a finite extent due to variations in depositional and post depositional processes. Thus, in the paper, the leaky aquifer system is divided into several horizontal regions for simulating the heterogeneity involved in both the confined aquifer and aquitard. A one-dimensional analyti

Gli stili APA, Harvard, Vancouver, ISO e altri

7

Burt, Abigail. "Three-dimensional hydrostratigraphy of the Orangeville Moraine area, southwestern Ontario, Canada." Canadian Journal of Earth Sciences 55, no. 7 (July 2018): 802–28. http://dx.doi.org/10.1139/cjes-2017-0077.

Testo completo

Abstract (sommario):

Regional-scale three-dimensional modelling of Quaternary sediments in the Orangeville Moraine area of southwestern Ontario has been completed as part of the Ontario Geological Survey groundwater initiative and provides an improved understanding of the glacial history and conceptual hydrostratigraphic framework for that region. Older (Marine Isotope Stage (MIS) 3–5) diamicton, glaciolacustrine, glaciofluvial, and rare nonglacial deposits forming regional aquitards and local aquifers are found in the northwestern part of the area. Catfish Creek Till, deposited during the Last Glacial Maximum (LG

Gli stili APA, Harvard, Vancouver, ISO e altri

8

Chuang, M. H., C. S. Huang, G. H. Li, and H. D. Yeh. "Groundwater fluctuations in heterogeneous coastal leaky aquifer systems." Hydrology and Earth System Sciences 14, no. 10 (October 11, 2010): 1819–26. http://dx.doi.org/10.5194/hess-14-1819-2010.

Testo completo

Abstract (sommario):

Abstract. In the past, the coastal leaky aquifer system, including two aquifers and an aquitard between them, was commonly assumed to be homogeneous and of infinite extent in the horizontal direction. The leaky aquifer system may however be heterogeneous and of finite extent due to variations in depositional and post depositional processes. In this paper, the leaky aquifer system is divided into several horizontal regions for the heterogeneous aquitard and underlying aquifer. A one-dimensional analytical model is developed for describing the head fluctuation in such a heterogeneous leaky aquif

Gli stili APA, Harvard, Vancouver, ISO e altri

9

Burbey, Thomas J. "Extensometer forensics: what can the data really tell us?" Hydrogeology Journal 28, no. 2 (December 7, 2019): 637–55. http://dx.doi.org/10.1007/s10040-019-02060-6.

Testo completo

Abstract (sommario):

AbstractExtensometer data have an advantage over satellite-based data for monitoring land subsidence in that extensometer data provide continuous measurements (hourly or better temporal resolution) at very high precision (several tens of microns) over a known depth interval; the latter is important for isolating groundwater pumping from other causes of land subsidence attributed to tectonics or eustatic adjustments in the Earth’s crust. This investigation aims to identify a semi-analytical procedure for quantifying aquifer and aquitard properties from a single extensometer record in lieu of th

Gli stili APA, Harvard, Vancouver, ISO e altri

10

Husain, Muin M., John A. Cherry, Scott Fidler, and Shaun K. Frape. "On the long-term hydraulic gradient in the thick clayey aquitard in the Sarnia region, Ontario." Canadian Geotechnical Journal 35, no. 6 (December 1, 1998): 986–1003. http://dx.doi.org/10.1139/t98-057.

Testo completo

Abstract (sommario):

Much of the southwestern part of Ontario between Lake Huron and Lake Erie has a thin freshwater aquifer overlain by an aquitard of Late Pleistocene clayey glaciolacustrine deposits and underlain by a thick Devonian shale aquitard. In a large area east of the St. Clair River, where the Quaternary aquitard is 30-50 m thick, groundwater of Pleistocene origin (identified by 18O and 2H signature) occurs in the aquifer and in the bottom part of the Quaternary aquitard. Numerous piezometer nests in the aquitard show a downward hydraulic gradient with depth. In some areas, the aquitard has downward gr

Gli stili APA, Harvard, Vancouver, ISO e altri

11

Li, Zhaofeng, Zhifang Zhou, Mingyuan Li, Boran Zhang, and Beibing Dai. "Delayed Drainage of a Largely Deformed Aquitard due to Abrupt Water Head Decline in Adjacent Aquifer." Geofluids 2018 (November 21, 2018): 1–12. http://dx.doi.org/10.1155/2018/2326491.

Testo completo

Abstract (sommario):

A governing equation of drawdown was put forward to describe the one-dimensional large-strain consolidation behavior of an aquitard without consideration of the creeping effect. An analytical solution was derived to characterize the drawdown variation in the aquitard subjected to sudden hydraulic head decline in adjacent confined aquifer. The characteristics of the groundwater dynamics and water balance in the aquitard have been analyzed based on the analytical solution. A comparison analysis of results has been made between the large-strain theory and the classical small-strain theory. The ty

Gli stili APA, Harvard, Vancouver, ISO e altri

12

Anochikwa, Collins Ifeanyichukwu, Garth van der Kamp, and S. Lee Barbour. "Interpreting pore-water pressure changes induced by water table fluctuations and mechanical loading due to soil moisture changes." Canadian Geotechnical Journal 49, no. 3 (March 2012): 357–66. http://dx.doi.org/10.1139/t11-106.

Testo completo

Abstract (sommario):

Pore pressures within saturated subsurface formations respond to stress changes due to loading as well as to changes in pore pressure at the boundaries of the formation. The pore-pressure dynamics within a thick aquitard in response to water table fluctuations and mechanical loading due to soil moisture changes have been simulated using a coupled stress–strain and groundwater flow finite element formulation. This modelling approach isolates the component of pore-pressure response of soil moisture loading from that caused by water table fluctuations, by using a method of superposition. In this

Gli stili APA, Harvard, Vancouver, ISO e altri

13

Husain, Muin M., John A. Cherry, and Shaun K. Frape. "The persistence of a large stagnation zone in a developed regional aquifer, southwestern Ontario." Canadian Geotechnical Journal 41, no. 5 (September 1, 2004): 943–58. http://dx.doi.org/10.1139/t04-040.

Testo completo

Abstract (sommario):

An extensive groundwater zone of exceptionally negative δ18O (17.5 to 16.0) exists in a thin, regional, freshwater aquifer between Lake St. Clair and the southern shore of Lake Huron in southwestern Ontario. The zone occurs at the interface between the overlying thick Quaternary clay aquitard of glaciolacustrine origin and the underlying bedrock shale. This isotope signature, which is 7 more negative (lighter) than modern water, indicates a Late Pleistocene origin of the aquifer water. This zone occurs only where the Quaternary aquitard is greater than 35 m thick. In the Quaternary aquita

Gli stili APA, Harvard, Vancouver, ISO e altri

14

Macumber, Phillip G. "Hydraulically Disconnected Rivers in the Highlands and Southern Riverine Plain of S.E Australia." Sustainability 15, no. 1 (January 3, 2023): 865. http://dx.doi.org/10.3390/su15010865.

Testo completo

Abstract (sommario):

The rivers of south-eastern Australia flow within a complex meander tract (Coonambidgal Formation) formed by phases of Quaternary stream activity. Pumping tests, hydrochemistry and groundwater monitoring of the Campaspe, Loddon and Murray River Valleys show that for significant parts of their courses, the rivers and their associated strip aquifers form a single integrated hydraulic unit perched above and disconnected from the regional water table by an underlying aquitard developed at the top of a varyingly thick and temporally dynamic vadose zone. Loss to the regional aquifer is not restricte

Gli stili APA, Harvard, Vancouver, ISO e altri

15

Rowe, R. Kerry, and Prebaharan Nadarajah. "Evaluation of the hydraulic conductivity of aquitards." Canadian Geotechnical Journal 30, no. 5 (October 1, 1993): 781–800. http://dx.doi.org/10.1139/t93-070.

Testo completo

Abstract (sommario):

The evaluation of the bulk vertical hydraulic conductivity of an aquitard based on its response to the pumping of an adjacent aquifer is examined using Biot's theory. Consideration is given to the errors in interpretation of the results of pumping tests which arise as a result of the time lag associated with different types of piezometers as well as the length of the piezometer. Factors to allow for correction of these errors are presented. Although these factors are originally developed for isotropic aquitards, they can be used for anisotropic aquitards with appropriate modifications describe

Gli stili APA, Harvard, Vancouver, ISO e altri

16

Priestley, Stacey C., Tavis Kleinig, Andrew J. Love, Vincent E. A. Post, Paul Shand, Martin Stute, Ilka Wallis, and Daniel L. Wohling. "Palaeohydrogeology and Transport Parameters Derived from 4He and Cl Profiles in Aquitard Pore Waters in a Large Multilayer Aquifer System, Central Australia." Geofluids 2017 (2017): 1–17. http://dx.doi.org/10.1155/2017/9839861.

Testo completo

Abstract (sommario):

A study of chloride and 4He profiles through an aquitard that separates the Great Artesian Basin from the underlying Arckaringa Basin in central Australia is presented. The aquitard separates two aquifers with long water residence times, due to low recharge rates in the arid climate. One-dimensional solute transport models were used to determine the advective flux of groundwater across the aquitard as well as establish any major changes in past hydrological conditions recorded by variations of the pore water composition. This in situ study showed that both diffusion and slow downward advection

Gli stili APA, Harvard, Vancouver, ISO e altri

17

Clark, Ian D., M. Jim Hendry, Jean-Michel Matray, Douglas Kip Solomon, and H. Niklaus Waber. "Aquitard Fluids and Gases." Geofluids 2018 (July 3, 2018): 1–2. http://dx.doi.org/10.1155/2018/6283687.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

18

Rezaei, Abolfazl, Mohammad Zare, and Hongbin Zhan. "Aquitard Horizontal Dispersion on Reactive Solute Transport in an Aquifer–Aquitard System." Transport in Porous Media 113, no. 3 (May 31, 2016): 695–716. http://dx.doi.org/10.1007/s11242-016-0719-6.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

19

Lourens, A., M. F. P. Bierkens, and F. C. van Geer. "Updating hydraulic properties and layer thicknesses in hydrogeological models using groundwater model calibration results." Hydrology and Earth System Sciences Discussions 12, no. 4 (April 24, 2015): 4191–231. http://dx.doi.org/10.5194/hessd-12-4191-2015.

Testo completo

Abstract (sommario):

Abstract. Usually, subsoil data for groundwater models are generated from borehole data, using upscaling techniques. Since the assumed hydraulic properties for litho-classes in boreholes are uncertain, and upscaling may add inaccuracies, the groundwater model has to be calibrated. In this paper, a method is presented that uses a calibrated groundwater model to improve the quality of a hydrogeological model (layer thickness and hydraulic properties) as obtained from borehole data. To achieve this, all borehole data are defined by random variables and related to aquifer and aquitard properties a

Gli stili APA, Harvard, Vancouver, ISO e altri

20

Filippini, Maria, Beth L. Parker, Enrico Dinelli, Philipp Wanner, Steven W. Chapman, and Alessandro Gargini. "Assessing aquitard integrity in a complex aquifer – aquitard system contaminated by chlorinated hydrocarbons." Water Research 171 (March 2020): 115388. http://dx.doi.org/10.1016/j.watres.2019.115388.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

21

Woobaidullah, A. S. M., Md Ariful Islam, Md Zakir Hossain, and Md Shahidul Islam. "Geo-electrical resistivity survey for fresh groundwater investigation in Mirsharai Economic Zone, Chittagong in the south-eastern coastal areas of Bangladesh." Journal of Nepal Geological Society 60 (September 16, 2020): 181–94. http://dx.doi.org/10.3126/jngs.v60i0.31262.

Testo completo

Abstract (sommario):

Salinity in the groundwater is one of the major concerning issues in the coastal region of Bangladesh. Mirsharai Economic Zone, Mirsharai Upazila in the south-eastern coastal region of Chittagong District of Bangladesh, requires substantial amount of fresh groundwater supply for industrial and household use. The purpose of this study is to delineate the aquifer system of the study area and to determine the extension of potential fresh water aquifer for groundwater development through geophysical electrical resistivity sounding survey. Vertical Electrical Sounding in conjunction with borehole d

Gli stili APA, Harvard, Vancouver, ISO e altri

22

Broster, B. E., and D. A. Pupek. "The significance of buried landscape in subsurface migration of dense non-aqueous phase liquids; the case of perchloroethylene in the Sussex Aquifer, New Brunswick." Environmental and Engineering Geoscience 7, no. 1 (February 1, 2001): 17–29. http://dx.doi.org/10.2113/gseegeosci.7.1.17.

Testo completo

Abstract (sommario):

Abstract At Sussex, New Brunswick, dissolved perchloroethylene (PCE) as high as 28.0 mu g/liter, was detected within the upper aquifer and in concentrations to 1.6 mu g/liter within the lower aquifer that serves as the main source of municipal water supply. Predominantly formed as an esker ridge, the lower aquifer consists of well-sorted, glaciofluvial/ice-contact, sand and gravel layers mostly confined by underlying till and/or bedrock and an overlying unit of laminated silt-clay glaciolacustrine sediments (middle aquitard). The middle aquitard is in turn overlain by an upper aquifer of varia

Gli stili APA, Harvard, Vancouver, ISO e altri

23

Zhang, Yu, Zuodong Jin, Yunlong Hou, Bingbing Han, and Charles Ntakiyimana. "Fluid-Solid Coupling Effect on Numerical Simulation of Deep Foundation Pit Deformation in Soft Soil Area." Applied Sciences 12, no. 21 (November 6, 2022): 11242. http://dx.doi.org/10.3390/app122111242.

Testo completo

Abstract (sommario):

Groundwater is abundant in soft soil areas, which has a significant impact on the excavation deformation of foundation pits. In this paper, based on the monitoring of deep foundation pits with waterproof curtains in Shanghai deep foundation pits, COMSOL Multiphysics is used to model the layers of the foundation pits and establish a two-dimensional seepage-consolidation coupled model for hierarchical dewatering excavation. The feasibility of numerical simulation of regional foundation pits, the modeling method of the foundation pit seepage model is explored, and the presence or absence of water

Gli stili APA, Harvard, Vancouver, ISO e altri

24

Huang, Ming-hua, and Dun Li. "A One-Dimensional Fractional-Derivative Viscoelastic Model for the Aquitard Consolidation of an Aquifer System." Geofluids 2019 (May 2, 2019): 1–11. http://dx.doi.org/10.1155/2019/5685134.

Testo completo

Abstract (sommario):

Land subsidence resulting from the withdrawal of groundwater is one of the problems of major importance to geosciences and geomechanics. In order to analyze the phenomena of land subsidence, this study attempts to constitute a more reliable prediction model to simulate the consolidation process of the aquifer system under the drawdown of groundwater. A fractional-derivative viscoelastic model is introduced to characterize the rheological properties of the aquitard, and the equation governing the consolidation process is established on the basis of the one-dimensional consolidation theory. The

Gli stili APA, Harvard, Vancouver, ISO e altri

25

Wang, Ye, Mao-sheng Zhang, Fu-sheng Hu, Ying Dong, and Kun Yu. "A Coupled One-Dimensional Numerical Simulation of the Land Subsidence Process in a Multilayer Aquifer System due to Hydraulic Head Variation in the Pumped Layer." Geofluids 2018 (2018): 1–12. http://dx.doi.org/10.1155/2018/4083439.

Testo completo

Abstract (sommario):

After exploitation of groundwater had been reduced and the groundwater level of the confined aquifer had risen, land subsidence was observed to continue rather than cease for several years according to the layer-wise mark monitoring data in Xi’an. To analyze the phenomena, a numerical model of a coupled one-dimensional multilayer aquifer system is developed to represent land subsidence due to hydraulic head variation in the pumped layer. The numerical simulation results show that the pressure head in other layers does not rise immediately when the hydraulic head in the pumped layer starts to r

Gli stili APA, Harvard, Vancouver, ISO e altri

26

Stoyanov, Nikolay, Stefan Dimovski, and Aleksey Benderev. "Hydrogeological models for the conditions causing the occurrence of manganese in wells for groundwater extraction from the terrace of the Vacha River, Southern Bulgaria." Review of the Bulgarian Geological Society 83, no. 3 (December 2022): 259–62. http://dx.doi.org/10.52215/rev.bgs.2022.83.3.259.

Testo completo

Abstract (sommario):

The presented study examines the problem caused by the groundwater pollution in the alluvial aquifer complex formed in the terrace of the Vacha River. Two working hypotheses are considered. In the first one is accepted that the aquitard is regionally well sustained and limits the penetration of Mn-contaminated waters into the lower aquifer. In the second one is assumed that there are hydrogeological windows in the aquitard, through which active mass exchange between the two aquifers can take place and manganese can occur in the pumping wells after their exploitation is started.

Gli stili APA, Harvard, Vancouver, ISO e altri

27

Malama, Bwalya, Devin Pritchard-Peterson, John J. Jasbinsek, and Christopher Surfleet. "Assessing Stream-Aquifer Connectivity in a Coastal California Watershed." Water 13, no. 4 (February 5, 2021): 416. http://dx.doi.org/10.3390/w13040416.

Testo completo

Abstract (sommario):

We report the results of field and laboratory investigations of stream-aquifer interactions in a watershed along the California coast to assess the impact of groundwater pumping for irrigation on stream flows. The methods used include subsurface sediment sampling using direct-push drilling, laboratory permeability and particle size analyses of sediment, piezometer installation and instrumentation, stream discharge and stage monitoring, pumping tests for aquifer characterization, resistivity surveys, and long-term passive monitoring of stream stage and groundwater levels. Spectral analysis of l

Gli stili APA, Harvard, Vancouver, ISO e altri

28

Wahyono, Sri Cahyo, Sudarningsih, Fahriadi, Totok Wianto, and Amar Vijai Nasrulloh. "FRESHWATER POTENTIAL BASED ON IDENTIFICATION OF AQUIFER LAYER IN BALANGAN COUNTY, INDONESIA." Journal of Southwest Jiaotong University 57, no. 5 (October 30, 2022): 457–66. http://dx.doi.org/10.35741/issn.0258-2724.57.5.36.

Testo completo

Abstract (sommario):

Groundwater is a reservoir of fresh water located beneath the ground surface in soil pore spaces and the fractures of lithology formations. Groundwater contained in the aquifer layer has a certain depth. Aquifer layer measurement was conducted with five tracks using the AGI Super Sting R1 IP tool with a spacing of 25 m and a track length of 675 m in Balangan County. This study aims to determine the 2D cross-sectional model, analyze lithology types, and determine the depth, thickness, and aquifer type in the study area based on the resistivity value. The results showed that the study area inclu

Gli stili APA, Harvard, Vancouver, ISO e altri

29

Runkel, Anthony C., Robert G. Tipping, Jessica R. Meyer, Julia R. Steenberg, Andrew J. Retzler, Beth L. Parker, Jeff A. Green, John D. Barry, and Perry M. Jones. "A multidisciplinary-based conceptual model of a fractured sedimentary bedrock aquitard: improved prediction of aquitard integrity." Hydrogeology Journal 26, no. 7 (June 1, 2018): 2133–59. http://dx.doi.org/10.1007/s10040-018-1794-2.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

30

Du, Yao, Teng Ma, Yamin Deng, Shuai Shen, and Zongjie Lu. "Sources and fate of high levels of ammonium in surface water and shallow groundwater of the Jianghan Plain, Central China." Environmental Science: Processes & Impacts 19, no. 2 (2017): 161–72. http://dx.doi.org/10.1039/c6em00531d.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

31

TAKEUCHI, Mio. "Role of Aquitard in Subsurface Microbial Activity." Journal of Geography (Chigaku Zasshi) 116, no. 6 (2007): 915–21. http://dx.doi.org/10.5026/jgeography.116.6_915.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

32

Ortega-Guerrero, Adrian, John A. Cherry, and David L. Rudolph. "Large-Scale Aquitard Consolidation Near Mexico City." Ground Water 31, no. 5 (September 1993): 708–18. http://dx.doi.org/10.1111/j.1745-6584.1993.tb00841.x.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

33

Sridharan, K., M. Sekhar, and M. S. Mohan Kumar. "Analysis of an Aquifer-water table aquitard system." Journal of Hydrology 114, no. 1-2 (March 1990): 175–89. http://dx.doi.org/10.1016/0022-1694(90)90080-h.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

34

Krainer, Karl, Gerfried Winkler, Sabine Pernreiter, and Thomas Wagner. "Unusual catchment runoff in a high alpine karst environment influenced by a complex geological setting (Northern Calcareous Alps, Tyrol, Austria)." Hydrogeology Journal 29, no. 8 (September 29, 2021): 2837–52. http://dx.doi.org/10.1007/s10040-021-02405-0.

Testo completo

Abstract (sommario):

AbstractGarber Schlag (Q-GS) is one of the major springs of the Karwendel Mountains, Tyrol, Austria. This spring has a unique runoff pattern that is mainly controlled by the tectonic setting. The main aquifer is a moderately karstified and jointed limestone of the Wetterstein Formation that is underlain by nonkarstified limestone of the Reifling Formation, which acts as an aquitard. The aquifer and aquitard of the catchment of spring Q-GS form a large anticline that is bound by a major fault (aquitard) to the north. Discharge of this spring shows strong seasonal variations with three recharge

Gli stili APA, Harvard, Vancouver, ISO e altri

35

Campos‐Enríquez, J. O., O. Delgado‐Rodríguez, R. Chávez‐Segura, P. Gómez‐Contreras, E. L. Flores‐Márquez, and F. S. Birch. "The subsurface structure of the Chalco sub‐basin (Mexico City) inferred from geophysical data." GEOPHYSICS 62, no. 1 (January 1997): 23–35. http://dx.doi.org/10.1190/1.1444123.

Testo completo

Abstract (sommario):

The Chalco sub‐basin, the hydrogeological reserve of Mexico City, is located in the southern portion of Mexico City's basin, an intramontane valley located at 2200 m a.s.l. in the Trans‐Mexican Volcanic Belt (Central Mexico). Several geophysical studies (dc resistivity, seismic refraction, gravity, well‐logging) have been conducted in this area. The objectives of these independent surveys were different and of regional and local scopes. This study represents the first comprehensive effort to assimilate and interpret the data available to date from the area of the Chalco sub‐basin and to infer

Gli stili APA, Harvard, Vancouver, ISO e altri

36

Mei, Jinling, Hong Cao, Guanyong Luo, and Hong Pan. "Analytical Method for Groundwater Seepage through and Beneath a Fully Penetrating Cut-off Wall Considering Effects of Wall Permeability and Thickness." Water 14, no. 23 (December 6, 2022): 3982. http://dx.doi.org/10.3390/w14233982.

Testo completo

Abstract (sommario):

A fully penetrating cut-off wall is a vertical seepage barrier that fully penetrates an aquifer and is embedded in an underlying aquitard to a certain depth. Groundwater seepage with this type of wall occurs through three paths: leakage through the body of the wall in the aquifer, leakage through the body of the wall embedded in the aquitard, and seepage under the wall. Seepage through the first path can be simply treated as one-dimensional flow. However, due to the mutual influence of seepage through the latter two paths, the seepage problem is complicated and still needs to be studied. An an

Gli stili APA, Harvard, Vancouver, ISO e altri

37

Cardimona, Steven J., William P. Clement, and Katharine Kadinsky‐Cade. "Seismic reflection and ground‐penetrating radar imaging of a shallow aquifer." GEOPHYSICS 63, no. 4 (July 1998): 1310–17. http://dx.doi.org/10.1190/1.1444432.

Testo completo

Abstract (sommario):

In 1995 and 1996, researchers associated with the US Air Force’s Phillips and Armstrong Laboratories took part in an extensive geophysical site characterization of the Groundwater Remediation Field Laboratory located at Dover Air Force Base, Dover, Delaware. This field experiment offered an opportunity to compare shallow‐reflection profiling using seismic compressional sources and low‐frequency ground‐penetrating radar to image a shallow, unconfined aquifer. The main target within the aquifer was the sand‐clay interface defining the top of the underlying aquitard at 10 to 14 m depth. Although

Gli stili APA, Harvard, Vancouver, ISO e altri

38

Zhuang, Chao, Zhifang Zhou, and Walter A. Illman. "A Joint Analytic Method for Estimating Aquitard Hydraulic Parameters." Groundwater 55, no. 4 (January 10, 2017): 565–76. http://dx.doi.org/10.1111/gwat.12494.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

39

Adar, Eilon, and Ronit Nativ. "Isotopes as tracers in a contaminated fractured chalk aquitard." Journal of Contaminant Hydrology 65, no. 1-2 (August 2003): 19–39. http://dx.doi.org/10.1016/s0169-7722(02)00237-1.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

40

McMahon, P. "Aquifer/aquitard interfaces: mixing zones that enhance biogeochemical reactions." Hydrogeology Journal 9, no. 1 (February 16, 2001): 34–43. http://dx.doi.org/10.1007/s100400000109.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

41

Ezra, Shai, Shimon Feinstein, Alex Yakirevich, Eilon Adar, and Itzhak Bilkis. "Retardation of organo-bromides in a fractured chalk aquitard." Journal of Contaminant Hydrology 86, no. 3-4 (August 2006): 195–214. http://dx.doi.org/10.1016/j.jconhyd.2006.02.016.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

42

Peffer, Jeffrey R. "Complex Aquifer-Aquitard Relationships at an Appalachian Plateau Site." Ground Water 29, no. 2 (March 1991): 209–17. http://dx.doi.org/10.1111/j.1745-6584.1991.tb00512.x.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

43

Nativ, Ronit, and Ilan Nissim. "Characterization of a Desert Aquitard- Hydrologic and Hydrochemical Considerations." Ground Water 30, no. 4 (July 1992): 598–606. http://dx.doi.org/10.1111/j.1745-6584.1992.tb01536.x.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

44

Gardner, W. Payton, Glenn A. Harrington, and Brian D. Smerdon. "Using excess 4He to quantify variability in aquitard leakage." Journal of Hydrology 468-469 (October 2012): 63–75. http://dx.doi.org/10.1016/j.jhydrol.2012.08.014.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

45

Sekhar, M., M. S. Mohan Kumar, and K. Sridharan. "Parameter estimation in an aquifer-water table aquitard system." Journal of Hydrology 136, no. 1-4 (August 1992): 177–92. http://dx.doi.org/10.1016/0022-1694(92)90010-s.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

46

Robertson, W. D., B. M. Russell, and J. A. Cherry. "Attenuation of nitrate in aquitard sediments of southern Ontario." Journal of Hydrology 180, no. 1-4 (May 1996): 267–81. http://dx.doi.org/10.1016/0022-1694(95)02885-4.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

47

Waldron, B. A., J. B. Harris, D. Larsen, and A. Pell. "Mapping an aquitard breach using shear-wave seismic reflection." Hydrogeology Journal 17, no. 3 (December 2, 2008): 505–17. http://dx.doi.org/10.1007/s10040-008-0400-4.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

48

Wang, Quanrong, and Hongbin Zhan. "Radial reactive solute transport in an aquifer–aquitard system." Advances in Water Resources 61 (November 2013): 51–61. http://dx.doi.org/10.1016/j.advwatres.2013.08.013.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

49

Liu, Xiaotian, Jianxiu Wang, Tianliang Yang, Lujun Wang, Na Xu, Yanxia Long, and Xinlei Huang. "Dewatering-Induced Stratified Settlement around Deep Excavation: Physical Model Study." Applied Sciences 12, no. 18 (September 6, 2022): 8929. http://dx.doi.org/10.3390/app12188929.

Testo completo

Abstract (sommario):

The multi-aquifer and multi-aquitard system (MAMA) is a typical geological structure in deltas. Thus, the risks and challenges to settlement control and environmental protection are increased when demand for underground space extends to deeper strata. In this study, dewatering-induced stratified settlement in MAMA is divided into three stages according to whether the overlying aquitard is coupled with groundwater seepage. Subsequently, large physical model tests were carried out. Seepage and compression in the overlying strata come after the compression in the confined aquifer and the coordina

Gli stili APA, Harvard, Vancouver, ISO e altri

50

Ge, Qin, Xing Liang, Menggui Jin, Jing Li, and Yan Liu. "Cl− as a Chemical Fingerprint of Solute Transport in the Aquitard-Aquifer System of the North Jiangsu Coastal Plain, China." Geofluids 2017 (2017): 1–16. http://dx.doi.org/10.1155/2017/6131547.

Testo completo

Abstract (sommario):

Detailed vertical profiles of Cl− in porewaters through the aquitard-aquifer system were used to yield solute transport mechanism and build a conceptual model regarding evolution processes and transport time of natural tracer migration in North Jiangsu coastal plain, China. One-dimensional vertical simulated models of Cl− profiles illustrate that diffusion appeared to be the dominant solute transport mechanism in the aquitard-aquifer system. A downward groundwater flow did not improve the fitness between simulated and measured values. Several simulated models were constructed and suggested tha

Gli stili APA, Harvard, Vancouver, ISO e altri

Offriamo sconti su tutti i piani premium per gli autori le cui opere sono incluse in raccolte letterarie tematiche. Contattaci per ottenere un codice promozionale unico!