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Tesi sul tema "Aquifers"

Autore: Grafiati
Pubblicato: 4 giugno 2021
Ultima modifica: 25 luglio 2025

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1

Chen, Yiming. "Aquifer storage and recovery in saline aquifers." Diss., Georgia Institute of Technology, 2014. http://hdl.handle.net/1853/52266.

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Aquifer storage and recovery (ASR) is a particular scheme of artificial recharge of groundwater by injecting fresh water into aquifers and subsequently recovering the stored water during times of peak demand or extended drought. In the era of combating climate change, ASR, as an effective means for water reuse and sustainable management of water resources in concert with the natural environment, represents a huge opportunity for climate change adaptation to mitigate water availability stress.The success of an ASR scheme is quantified by the recovery efficiency (RE), defined as the volume of st
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2

Artiola, Janick. "Arizona Aquifers." College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 2013. http://hdl.handle.net/10150/298168.

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Video is available on the UofAZCALS YouTube channel.<br>About 5% of Arizona's population depends on private wells for fresh water and more than 40% of our annual water use comes from Arizona's aquifers. Following a brief introduction to regulations, requirements and equipment used for drilling a private well in Arizona, this video presents the geologic origins of Arizona's aquifer materials with illustrations and pictures of AZ aquifers. Finally, aquifers are ranked by their ability to store and produce water.
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3

Payne, Scott Marshall. "Classification of aquifers." Diss., [Missoula, Mont.] : The University of Montana, 2010. http://etd.lib.umt.edu/theses/available/etd-03082010-112041.

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4

Sun, Xiaobin. "Testing and evaluation of artesian aquifers in Table Mountain Group aquifers." University of the Western Cape, 2014. http://hdl.handle.net/11394/4369.

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Philosophiae Doctor - PhD<br>The Table Mountain Group (TMG) Aquifer is a huge aquifer system which may provide large bulk water supplies for local municipalities and irrigation water for agriculture in the Western Cape and Eastern Cape Provinces in South Africa. In many locations, water pressure in an aquifer may force groundwater out of ground surface so that the borehole drilled into the aquifer would produce overflow without a pump. Appropriate testing and evaluation of such artesian aquifers is very critical for sound evaluation and sustainable utilization of groundwater resources in the T
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5

Wendelborn, Anke. "Zinc and copper behaviour during stormwater aquifer storage and recovery in sandy aquifers." Monash University. Faculty of Engineering. Department of Civil Engineering, Institute for Sustainable Water Resources, 2008. http://arrow.monash.edu.au/hdl/1959.1/68715.

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In the light of increasing demand and diminishing supplies a sustainable urban water management for Melbourne and other cities will need to include water recycling and reuse of reclaimed water and stormwater. One key issue in stormwater reuse is the need for storage between times of collection until times of demand. Aquifer storage and recovery (ASR) would be a valuable option as it has limited space requirements and restricts loss from evaporation. However, stormwater commonly contains elevated levels of heavy metals, of which Zn and Cu are the most mobile. Stormwater also contains suspended
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6

Shamsudduha, Mohammad. "Mineralogical and geochemical profiling of arsenic-contaminated alluvial aquifers in the Ganges-Brahmaputra floodplain, Minikganj, Bangladesh." Auburn, Ala., 2007. http://repo.lib.auburn.edu/2007%20Spring%20Theses/SHAMSUDDUHA_MOHAMMAD_47.pdf.

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7

Williams, David G. "Whole aquifer system management: the northeast floridan aquifer system under an interstate compact." Thesis, Georgia Institute of Technology, 1992. http://hdl.handle.net/1853/30907.

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8

Park, Chan-Hee. "Saltwater Intrusion in Coastal Aquifers." Diss., Georgia Institute of Technology, 2004. http://hdl.handle.net/1853/4857.

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Utilizing the analytical solution of the steady state sharp interface saltwater intrusion model in coastal aquifers, a multi-objective optimization formulation of pumping rates and well locations in a coastal aquifer is formulated to solve problems in water management practice. The proposed optimization problem uses progressive genetic algorithm technique and the method developed is applied to the previous work of Cheng et al. [2000]. Through this analysis, several other applications are provided to demonstrate the use of the model in practical applications. This work is the first to optimize
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9

Teo, Hhih-Ting, and h. teo@griffith edu au. "Tidal Dynamics in Coastal Aquifers." Griffith University. School of Engineering, 2003. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20030729.155028.

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The prediction of coastal groundwater movement is necessary in coastal management. However, the study in this field is still a great challenge due to the involvement of tidal-groundwater interactions and the phenomena of hydrodynamic dispersion between salt-fresh water in the coastal region. To date, numerous theories for groundwater dynamic have been made available in analytical, numerical and also experimental forms. Nevertheless, most of them are based on the zeroth-order shallow flow, i.e. Boussinesq approximation. Two main components for coastal unconfined aquifer have been completed in t
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10

Halihan, Todd. "Permeability structure in fractured aquifers /." Digital version accessible at:, 2000. http://wwwlib.umi.com/cr/utexas/main.

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11

Teo, Hhih-Ting. "Tidal Dynamics in Coastal Aquifers." Thesis, Griffith University, 2003. http://hdl.handle.net/10072/365678.

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Abstract (sommario):
The prediction of coastal groundwater movement is necessary in coastal management. However, the study in this field is still a great challenge due to the involvement of tidal-groundwater interactions and the phenomena of hydrodynamic dispersion between salt-fresh water in the coastal region. To date, numerous theories for groundwater dynamic have been made available in analytical, numerical and also experimental forms. Nevertheless, most of them are based on the zeroth-order shallow flow, i.e. Boussinesq approximation. Two main components for coastal unconfined aquifer have been completed in t
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12

Sun, Dongmin. "Aquitard control of stream-aquifer interaction and flow to a horizontal well in coastal aquifers." Diss., Texas A&M University, 2005. http://hdl.handle.net/1969.1/4740.

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This dissertation is composed of three parts of major contributions: In Chapter II, we developed a new conceptual model and derived a new semi-analytical model for flow to a horizontal well beneath a water reservoir. Instead of treating the leakage from aquitard as a source term inside the aquifer which is called Hantush’s assumption (1964), we linked flows in aquitard and aquifer by the idea of continuity of flux and drawdown. The result in this chapter is compared with that of Zhan and Park in 2003 which Hantush’s assumption is adopted at various hydraulic and well configurations.
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13

Tremblay, Philippe. "Étude hydrogéologique de l'aquifère de Saint-Honoré avec emphase sur son bilan hydrique /." Thèse, Chicoutimi : Université du Québec à Chicoutimi, 2005. http://theses.uqac.ca.

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14

Rotzoll, Kolja. "Hydraulic Parameter Estimation Using Aquifer Tests, Specific Capacity, Ocean Tides, and Wave Setup for Hawai'i Aquifers." Thesis, Water Resources Research Center, University of Hawaii at Manoa, 2007. http://hdl.handle.net/10125/22265.

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The islands of Hawaii face increasing ground-water demands due to population growth in the last decades. Analytical and numerical models are essential tools for managing sustainable ground-water resources. The models require estimates of hydraulic properties, such as hydraulic conductivity and storage parameters. Four methods were evaluated to estimate hydraulic properties for basalts on the island of Maui. First, unconventional step-drawdown tests were evaluated. The results compare favorably with those from classical aquifer tests with a correlation of 0.81. Hydraulic conductivity is log-nor
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15

Rotter, Ben E. G. "Modelling bioremediation of uranium contaminated aquifers." Thesis, University of Edinburgh, 2008. http://hdl.handle.net/1842/2573.

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Radionuclide extraction, processing and storage have resulted in a legacy of radionuclide-contaminated groundwater aquifers worldwide. An emerging remediation technology for such sites is the in situ immobilisation of radionuclides via biostimulation of dissimilatory metal reducing bacteria. While this approach has been successfully demonstrated in experimental studies, advances in understanding and optimization of the technique are needed. Mass transfer processes in heterogeneous and structured porous media may significantly affect the geochemical and microbial processes taking place in conta
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16

Mühlherr, Ingo H. "Nitrous oxide in British limestone aquifers." Thesis, University of East Anglia, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.389365.

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17

Clarke, Alastair James. "Simulating gas leaks in shallow aquifers." Thesis, University of Cambridge, 2015. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.708469.

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18

Rehfeldt, Kenneth Robert. "Prediction of macrodispersivity in heterogeneous aquifers." Thesis, Massachusetts Institute of Technology, 1988. http://hdl.handle.net/1721.1/65014.

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19

Forghani, Ali. "Simulation and Optimization Models to Evaluate Performance of Aquifer Storage and Recovery Wells in Fresh Water Aquifers." DigitalCommons@USU, 2018. https://digitalcommons.usu.edu/etd/6933.

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Abstract (sommario):
Aquifer storage and recovery (ASR) involves artificially recharging an aquifer through well(s) using surplus water for later recovery in high-demand months. The operators of the studied ASR system developed the system as a means of receiving additional water rights to supplement their pre-existing water rights for extraction in dry months. However, the region’s water regulators define the performance of this ASR system as the amount of the injected water that is recoverable from the same wells during extraction periods. The study proposes recovery effectiveness (REN) as the performance index o
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20

Brakefield, Linzy Kay Clement Thangadurai Prabhakar. "Physical and numerical modeling of buoyant groundwater plumes." Auburn, Ala, 2008. http://repo.lib.auburn.edu/EtdRoot/2008/SPRING/Civil_Engineering/Thesis/Brakefield_Linzy_10.pdf.

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21

Kustu, M. Deniz. "Optimal Storage Of Freshwater In Saline Aquifers." Master's thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/12606200/index.pdf.

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Abstract (sommario):
Storage of freshwater in saline aquifers has a strategic importance in water deficit countries. The freshwater stored in these aquifers may be the only source of water available during times of crisis. Coupled simulation and optimization type groundwater management models have been developed that will achieve the optimal control of the storage of freshwater in a stagnant manner for constant density and variable density flows in hypothetical single- and multi-layered saline aquifers. The study is carried out in two stages. In the first stage, a transient model of five years is simulated that a
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22

Duah, Anthony A. "Sustainable utilisation of Table Mountain Group aquifers." Thesis, University of the Western Cape, 2010. http://etd.uwc.ac.za/index.php?module=etd&action=viewtitle&id=gen8Srv25Nme4_2705_1373463070.

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<p>The Table Mountain Group (TMG) Formation is the lowest member of the Cape Supergroup which consists of sediments deposited from early Ordovician to early Carboniferous times, approximately between 500 and 340 million years ago. The Table Mountain Group (TMG) aquifer system is&nbsp<br>exposed along the west and south coasts of South Africa. It is a regional fractured rock aquifer that has become a major source of bulk water supply to&nbsp<br>meet the agricultural and urban water requirements of the Western and Eastern Cape Provinces of South Africa. The TMG aquifer system comprises of an app
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23

Mohd, Amin Sharidah. "Geochemical modelling of CO2 in saline aquifers." Thesis, Imperial College London, 2013. http://hdl.handle.net/10044/1/24136.

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Carbon dioxide, CO2, disposal into saline aquifers could reduce emissions of anthropogenic greenhouse gases into the atmosphere. To ensure that the CO2 is trapped securely and will not escape to the surface, storage in such formations must be designed carefully. The geochemical reactions involved depend on the composition of the injected fluid introduced in the aquifer and the composition of the initial minerals assemblage and the aquifer brine. This thesis studies mineral dissolution/precipitation during CO2 storage, both in the cap rock and the storage aquifer itself. The overall objective i
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24

Fazal, Md Abul. "MANAGING GROUNDWATER AQUIFERS WITH SIMULATION/OPTIMIZATION MODELS." Kyoto University, 1999. http://hdl.handle.net/2433/181889.

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Kyoto University (京都大学)<br>0048<br>新制・課程博士<br>博士(農学)<br>甲第7880号<br>農博第1038号<br>新制||農||777(附属図書館)<br>学位論文||H11||N3243(農学部図書室)<br>UT51-99-G474<br>京都大学大学院農学研究科地域環境科学専攻<br>(主査)教授 河地 利彦, 教授 青山 咸康, 教授 三野 徹<br>学位規則第4条第1項該当
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25

Ronayne, Michael James. "Understanding groundwater dynamics in structurally heterogeneous aquifers /." May be available electronically:, 2008. http://proquest.umi.com/login?COPT=REJTPTU1MTUmSU5UPTAmVkVSPTI=&clientId=12498.

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26

Chavez, Rodriguez Adolfo 1951. "Modeling mountain-front recharge to regional aquifers." Diss., The University of Arizona, 1987. http://hdl.handle.net/10150/191124.

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The estimation of mountain-front recharge to regional aquifers is approached from a hydroclimatic standpoint. Analytical models of the seasonal water yield and streamflow are developed in this dissertation. These models are specialized for hard-rock mountainous watersheds where deep percolation occurs through fractures exclusively. Input variables are considered to be stochastic, and a relationship between precipitation and surface runoff is derived by using a deterministic physical process. Streamflow models for the summer and winter rainy seasons are developed separately in terms of known pa
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27

Khudaida, Kamal. "Modelling CO2 sequestration in deep saline aquifers." Thesis, Loughborough University, 2016. https://dspace.lboro.ac.uk/2134/21104.

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In spite of the large number of research works on carbon capture and sequestration (CCS), the migration and behaviour of CO2 in the subsurface (i. e. strata below the earth's surface) still needs further understanding and investigations with the aim of encouraging the governmental policy makers to adopt CCS technology as one of the most viable means to tackle the global warming threats. In this research work, a series of numerical simulations has been carried out using STOMP-CO2 simulation code to determine the flow behaviour and ultimate fate of the injected supercritical carbon dioxide (scCO
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28

Greskowiak, Janek Johannes. "Reactive transport processes in artificially recharged aquifers." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät II, 2006. http://dx.doi.org/10.18452/15582.

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In der vorliegenden Dissertation sollten die hydrogeochemischen Prozesse herausgearbeitet werden, die für die Wasserqualitätsänderung während eines ASR Experiments in Bolivar, Südaustralien und während der Versickerung in einem künstlichen Grundwasseranreicherungsbecken in Berlin von Bedeutung waren. Reaktive Stofftransportmodellierung des ASR Experiments in Bolivar, Südaustralien zeigte, dass die hydrochemischen Veränderungen in der direkten Umgebung des Injektionsbrunnens während der Speicherphase nur durch rapide Änderungen der Sauerstoff- und Nitrat reduzierenden Bakterienmasse erklärt we
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29

Costall, Alexander Ross. "Hydro-geophysics in High-Quality Coastal Aquifers." Thesis, Curtin University, 2020. http://hdl.handle.net/20.500.11937/82107.

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Electrical resistivity imaging (ERI) and groundwater solute transport modelling are developed for recovery of the hydrogeological architecture of coastal margins. ERI acquisition and processing parameters, along with the influence of hydraulic anisotropy and heterogeneity in karstic aquifers, are explored with examples selected along more than 100 km of coastline proximal to Perth Western Australia. The methods will contribute to accurate predictive groundwater modelling and sustainable management of high-quality coastal aquifers worldwide.
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30

Batista, Filho Job Jesus. "A dinamica das aguas subterraneas no estuario do Rio Itanhaem, litoral sul do Estado de São Paulo." [s.n.], 2006. http://repositorio.unicamp.br/jspui/handle/REPOSIP/287665.

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Orientador: Sueli Yoshinaga Pereira<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Geociencias<br>Made available in DSpace on 2018-08-07T09:50:38Z (GMT). No. of bitstreams: 1 BatistaFilho_JobJesus_M.pdf: 4294081 bytes, checksum: 28f487525ec460febd41ef1f05e36218 (MD5) Previous issue date: 2006<br>Resumo: O presente trabalho estuda a interferência da maré nos aqüíferos costeiros, identificando alterações hidrodinâmicas e químicas em suas águas. A pesquisa foi realizada no estuário do rio Itanhaém, em duas localidades: no Sitio de Pesquisa, com 7 poços instalados, s
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31

Walter, Martin. "Explaining the emergence of transboundary groundwater management : the cases of Guaraní aquifer system, the Hueco and Mesilla Bolsón aquifers, and the Génévois aquifer." Paris, Institut d'études politiques, 2012. https://spire.sciencespo.fr/notice/2441/5rkqqmvrn4tl22s9mc41lidr0.

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Malgré la diversité de contributions concernant l’analyse des ressources hydriques et la multiplicité d’expériences de gestion de ces ressources, les eaux souterraines n’ont été incorporées dans l’agenda politique des relations internationales que très récemment. En ligne avec les recherches dédiées à la compréhension des défis associés à la gestion des eaux et à l’émergence des mécanismes de régulation pour la gestion environnementale, ce travail examine la création de mécanismes pour la gestion conjointe des eaux souterraines transfrontalières. Pour ce faire, il essaye de répondre une questi
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32

Damico, James Ralph. "Geostatistical Characterization of Heterogeneity in the Aberjona River Aquifer, Woburn, Massachusetts." Wright State University / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=wright1166544810.

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33

McHugh, Kathleen M. "Western water law and the stream-aquifer system and how models are used to determine permitting and compliance of rules governing ground and surface water interaction." Thesis, The University of Arizona, 2003. http://etd.library.arizona.edu/etd/GetFileServlet?file=file:///data1/pdf/etd/azu_etd_hy0234_sip1_w.pdf&type=application/pdf.

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34

Murray, Eric Charles. "Guidelines for assessing single borehole yields in secondary aquifers." Thesis, Rhodes University, 1997. http://hdl.handle.net/10962/d1005512.

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The motivation for this research project arose from the realisation that many South African rural water supply schemes fail due to the over abstraction of groundwater from single boreholes. The main reason for this mis-management of groundwater is a result of inappropriate borehole yield recommendation methods. This research project set out to review existing borehole yield assessment methods and establish new methods which take the shortcomings of existing methods into account. The study is concerned with borehole yield assessment methods applicable to secondary aquifers, since these aquifers
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35

Biswas, Ashis. "Arsenic Geochemistry in the Alluvial Aquifers of West Bengal, India : Implications for targeting safe aquifers for sustainable drinking water supply." Doctoral thesis, KTH, Mark- och vattenteknik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-128938.

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The natural occurrences of high (&gt;10 μg/L) dissolved arsenic (As) in groundwater of Bengal Basin has put millions of people under the threat of chronic As exposure through drinking water. Present study has examined the processes that regulate As mobilization and its distribution in shallow aquifers and the potentiality of finding safe aquifers within shallow depth (&lt;50 m) for drinking water supply. The results indicate that in terms of aquifer sediment colors and water quality two types of aquifer namely brown sand aquifer (BSA) and grey sand aquifer (GSA) can be distinguished within the
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36

Matengu, Brian Munihango. "Groundwater assessment and sustainable management of the coastal alluvial aquifers in Namib Desert, Namibia: Omdel Aquifer as case study." University of Western Cape, 2020. http://hdl.handle.net/11394/7852.

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Philosophiae Doctor - PhD<br>The study addressed the groundwater assessment and sustainable management of the coastal alluvial aquifers in Namib Desert, the Omaruru River Delta Aquifer (Omdel Aquifer) was used as a case study. Sustainable utilization of groundwater in parts of hyper-arid Sub-Saharan Africa, like the Namib Desert, is always a challenge due to lack of resources and data. Understanding of hydrogeological characteristics of the Omaruru Delta Aquifer System is a pre-requisite for the management of groundwater supply in the Central Namib area (Namib Desert). For the Omdel Aquifer in
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37

Demirbas, Korkut. "Optimal Management Of Coastal Aquifers Using Heuristic Algorithms." Phd thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12613135/index.pdf.

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Excessive pumping in coastal aquifers results in seawater intrusion where optimal and efficient planning is essential. In this study, numerical solution of single potential solution by Strack is combined with genetic algorithm (GA) to find the maximum extraction amount in a coastal aquifer. Seawater intrusion is tracked with the potential value at the extraction well locations. A code is developed by combining GA and a subroutine repeatedly calling MODFLOW as a numerical solver to calculate the potential distribution for different configurations of solution (trial solutions). Potential distrib
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Strehlow, Karen. "Aquifers in volcanic regions : monitoring capabilities and hazards." Thesis, University of Bristol, 2017. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.720850.

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39

MacMinn, Christopher William. "Migration and trapping of CO₂ in saline aquifers." Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/70422.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2012.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 123-128).<br>Mitigation of climate change requires a reduction in atmospheric carbon dioxide (C0 2) emissions. One promising tool for achieving this is the large-scale injection of CO2 into deep saline aquifers. After injection, upward leakage of the CO2 is a primary concern because it will be buoyant relative to the ambient groundwater and, as a result, will rise toward the top of the aquifer and may migrate laterall
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40

Karam, Hanan Nadim. "Seawater circulation in coastal aquifers : processes and impacts." Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/78141.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2012.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 150-154).<br>This thesis explores the subterranean domain of chemical cycling in coastal oceans abutting permeable aquifers, where transport through sediments is dominated by advection, rather than diffusion. We investigate the mechanisms by which seawater circulates in the subsurface over a range of spatio-temporal scales, and the chemical reactions to which this circulation is coupled. Seawater circulat
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41

Watson, Francesca Elizabeth. "Numerical simulation of CO2 storage in saline aquifers." Thesis, Durham University, 2015. http://etheses.dur.ac.uk/11189/.

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CO2 capture and storage (CCS) has been proposed as a climate change mitigation strategy. The basic principle is to prevent CO2 which would normally be emitted from large point sources, such as power stations, from entering the atmosphere. This is achieved by capturing the CO2 at source and storing it in a location where it will be trapped and unable to enter the atmosphere. This work looks specifically at geological storage of CO2 in deep saline formations. Dynamic simulations can be used to investigate the fundamental physical and chemical processes which occur when CO2 is injected into geolo
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42

Mary, Makokha. "Seawater intrusion and contaminant transport in coastal aquifers." Kyoto University, 2008. http://hdl.handle.net/2433/136601.

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Kyoto University (京都大学)<br>0048<br>新制・課程博士<br>博士(農学)<br>甲第13874号<br>農博第1689号<br>新制||農||953(附属図書館)<br>学位論文||H20||N4341(農学部図書室)<br>UT51-2008-C790<br>京都大学大学院農学研究科地域環境科学専攻<br>(主査)准教授 小林 晃, 教授 河地 利彦, 教授 川島茂人<br>学位規則第4条第1項該当
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Mao, Deqiang. "Stochastic Analysis of Pumping Tests in Unconfined Aquifers." Diss., The University of Arizona, 2012. http://hdl.handle.net/10150/222873.

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The S shaped log log drawdown time curve typical of pumping tests in unconfined aquifers is reinvestigated via numerical experiments. We examine the temporal and spatial evolution of the rate of change in storage in an unconfined aquifer during pumping. This evolution is related to the transition of water release mechanisms from the expansion of water and compaction of the porous medium to the drainage of water from the unsaturated zone above the initial water table and initially saturated pores as the water table falls during the pumping of the aquifer. We conclude that the transition of the
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44

Field, Graeme. "Particle Filters for State Estimation of Confined Aquifers." UNF Digital Commons, 2018. https://digitalcommons.unf.edu/etd/804.

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Mathematical models are used in engineering and the sciences to estimate properties of systems of interest, increasing our understanding of the surrounding world and driving technological innovation. Unfortunately, as the systems of interest grow in complexity, so to do the models necessary to accurately describe them. Analytic solutions for problems with such models are provably intractable, motivating the use of approximate yet still accurate estimation techniques. Particle filtering methods have emerged as a popular tool in the presence of such models, spreading from its origins in signal p
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45

Nguyen, Bach Thao. "Coupling geophysical and isotopic approaches to better simulate saltwater intrusion into coastal aquifers : a case study in the Crau aquifer." Thesis, Avignon, 2016. http://www.theses.fr/2016AVIG0052/document.

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La recherche a porté sur les contraintes reliées à la modélisation des écoulements des eaux souterraines en aquifère côtier. Dans ces aquifères, la présence concomitante d’eaux douces et d’eaux salées modifient les patrons d’écoulement classiquement représentés par l’équation de Darcy. L’influence de la salinité de l’eau sur ses propriétés (densité) et sur la perméabilité du milieu complexifie la représentation mathématique des équations d’écoulement et la résolution des systèmes d’équations. Par ailleurs, l’influence des hétérogénéités du milieu rend plus difficile et hasardeux le paramétrage
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46

Zhang, Zhihui. "Quantitative characterization of aquifer heterogeneity and simulation of contaminant transport in a solvent-contaminated aquifer." Diss., The University of Arizona, 1999. http://etd.library.arizona.edu/etd/GetFileServlet?file=file:///data1/pdf/etd/azu_e9791_1999_148_sip1_w.pdf&type=application/pdf.

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47

Lin, Lixiang. "Hydraulic Properties of the Table Mountain Group (TMG) Aquifers." Thesis, University of Western Cape, 2008. http://etd.uwc.ac.za/index.php?module=etd&action=viewtitle&id=gen8Srv25Nme4_5115_1262826953.

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<p><font face="TimesNewRoman"> <p align="left">Research findings in current study provide a new insight into the fractured rock aquifers in the TMG area. Some of the results will have wide implications on the groundwater management and forms a solid basis the further study of the TMG aquifers.</p> </font></p>
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48

Gervais, Francoise. "Fate and Transport of Naphthenic Acids in Glacial Aquifers." Thesis, University of Waterloo, 2004. http://hdl.handle.net/10012/1229.

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Naphthenic acids (NAs) are carboxylated alkanes and cycloalkanes concentrated in wastewater during oil sands processing. The general chemical formula is C{n}H{n+Z}O{2}, where n represents the number of carbon atoms and Z specifies a homologous family with 0-6 rings (Z=0 to Z=-12). The wastewater is acutely toxic to surface water organisms and is stored in tailings ponds with over 230 million m³ of fines tailings and free water. The purpose of this thesis was to provide a preliminary evaluation of the potential attenuation of NAs during groundwater flow from the ponds. Laboratory
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Kolbe, Tamara. "Temporal and spatial structures of denitrification in crystalline aquifers." Thesis, Rennes 1, 2017. http://www.theses.fr/2017REN1S048/document.

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La contamination des aquifères de proche subsurface par les intrants d'origine agricole (nitrates) est un problème mondial.L'utilisation excessive d'engrais depuis plusieurs décennies a impacté la qualité des masses d'eau souterraines et soulève des enjeux pour la santé humaine comme pour celle des écosystèmes. Les nitrates dans les aquifères peuvent être réduits en diazote gazeux par l'activité microbienne hétérotrophique (la biomasse microbienne obtenant l'énergie nécessaire à ce processus via le carbone organique issu de la surface) et/ou par l'activité autotrophique (la biomasse microbienn
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50

Jose, Surabhin Chackiath. "Experimental investigations on longitudinal dispersive mixing in heterogeneous aquifers." Stuttgart Inst. für Wasserbau, 2004. http://deposit.d-nb.de/cgi-bin/dokserv?idn=975731157.

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