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Dissertations / Theses on the topic 'Hydrogeophysics'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

Steklova, Klara. "Computational methods in hydrogeophysics." Thesis, University of British Columbia, 2017. http://hdl.handle.net/2429/60815.

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Parameter and state estimation for groundwater models within a coupled hydrogeophysical framework has become common in the last few years as it has been shown that such estimates are usually better than those from a single data inversion. Different approaches have been suggested in literature to combine the essentially two different modalities in order to obtain better estimates for groundwater models, and improve monitoring of processes such as solute transport. However, the coupled approaches usually come at a price of higher computational cost and difficulties in coupling the geophysical an

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2

Downs, Christine Marie. "Imaging Wetland Hydrogeophysics: Applications of Critical Zone Hydrogeophysics to Better Understand Hydrogeologic Conditions in Coastal and Inland Wetlands and Waters." Scholar Commons, 2017. https://scholarcommons.usf.edu/etd/7397.

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This dissertation consists of three projects utilizing electric and electromagnetic (EM) methods to better understand critical-zone hydrogeologic conditions in select Florida wetlands and waters. First, a time-lapse electrical resistivity (ER) survey was conducted in section of mangrove forest on a barrier island in southeast Florida to image changes in pore-water salinity in the root zone. ER data show the most variability in the root zone over a 24-hour period, and, generally, the ground is more resistive during the day than overnig

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3

Haaken, Klaus [Verfasser]. "Applied hydrogeophysics for managed aquifer recharge / Klaus Haaken." Bonn : Universitäts- und Landesbibliothek Bonn, 2018. http://d-nb.info/1154485927/34.

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4

BASIRICÒ, STEFANO. "Borehole flowmeter and hydrogeophysics surveys: new possibilities for characterizing hydrogeological heterogeneities." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2012. http://hdl.handle.net/10281/28146.

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The research subject of this PhD thesis consists in the development and application of techniques for analyzing well‐log, well‐test, and tracer data to infer the distribution of hydrologic properties in heterogeneous geologic settings, including fractured rock and complex aquifer systems. This thesis is organized in an introductory section presenting the state of the art about heterogeneous geologic media characterization and a focus on flowmeter log analysis. The second chapter regards applications of an integrated surveying approach where an hydrogeophysical characterization was used for

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5

Kennedy, Jeffrey R. "Understanding Infiltration and Groundwater Flow at an Artificial Recharge Facility using Time-lapse Gravity Data." Diss., The University of Arizona, 2016. http://hdl.handle.net/10150/605117.

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Groundwater provides a fundamental resource for modern life. Throughout the world, groundwater is managed by storing (recharging) it underground in natural aquifers for future withdrawal and consumptive use. In Arizona, over 4 million people benefit from managed aquifer storage, but little effort is made to track the movement of recharged water through the subsurface. Motivated by current limitations in our ability to monitor percolation and groundwater movement at the scale of a recharge facility, an effort to collect time-lapse gravity data was carried out at the Southern Avra Valley Storage

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6

Falgàs, Parra Ester. "Hydrogeophysics as a multidisciplinary tool on aquifer appraisal: Focus on AMT capabilities." Doctoral thesis, Universitat de Barcelona, 2007. http://hdl.handle.net/10803/1924.

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The shallow subsurface of the earth is an extremely important geological zone that yields much of our water resources, supports our agriculture and ecosystems. Safe and effective management of our natural resources is a major challenge, that is, not to overexploit and pollute the aquifer systems. The hydrogeophysics discipline has emerged in recent years to investigate the potential that geophysical methods hold for providing quantitative information about subsurface hydrogeological parameters and processes. Water is essential for life. It has been and will continue to be a hot topic in both t

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7

Rossi, Matteo. "Non invasive hydrogeophysical techniques for vadose zone hydrological characterization." Doctoral thesis, Università degli studi di Padova, 2010. http://hdl.handle.net/11577/3427485.

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Hydrogeophysics is a discipline that emerged and had a great development in the last two decades. The aim of this discipline is the subsurface hydrological and hydrogeological characterization via non-invasive geophysical techniques. Conventional sampling techniques, for characterizing or monitoring the shallow subsurface, are typically sparsely distributed or acquired at an inappropriate scale. Non-invasive geophysical datasets can provide more dense 2D/3D information. The present work focused on the hydrological characterization of the vadose zone, as it is a challenging issue that may be mo

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8

Kalisperi, Despina. "Assessment of groundwater resources in the north-central coast of Crete, Greece using geophysical and geochemical methods." Thesis, Brunel University, 2009. http://bura.brunel.ac.uk/handle/2438/4241.

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The Geropotamos aquifer on the north‐central coast of Crete, Greece, is invaded in some places by salt water from the Aegean Sea, with impact on freshwater supplies for domestic and business uses, including agriculture. The geological setting of the study area is considered complex, as Miocene biogenic limestones, marls, clays and conglomerates crop out in the central and the western part and clastic limestones and dolomites of the Tripolis and Plattenkalk nappe (the bedrock) in the eastern part of the study area. The phyllitequartzite nappe (which forms the oldest rock of the study area) lays

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9

Kennedy, Jeffrey, Ty P. A. Ferré, and Benjamin Creutzfeldt. "Time-lapse gravity data for monitoring and modeling artificial recharge through a thick unsaturated zone." AMER GEOPHYSICAL UNION, 2016. http://hdl.handle.net/10150/622148.

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Groundwater-level measurements in monitoring wells or piezometers are the most common, and often the only, hydrologic measurements made at artificial recharge facilities. Measurements of gravity change over time provide an additional source of information about changes in groundwater storage, infiltration, and for model calibration. We demonstrate that for an artificial recharge facility with a deep groundwater table, gravity data are more sensitive to movement of water through the unsaturated zone than are groundwater levels. Groundwater levels have a delayed response to infiltration, change

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10

Smidt, Samuel J. "A comparison of hyporheic transport at a constructed stream restoration structure and natural riffle feature, West Branch Owego Creek, New York, USA." Thesis, University of Iowa, 2014. https://ir.uiowa.edu/etd/3192.

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While restoring hyporheic flowpaths has been cited as a benefit to stream restoration structures, little documentation exists confirming that constructed restoration structures induce hyporheic exchange comparable to natural stream features. This study compares a stream restoration structure (cross-vane) to a natural feature (riffle) concurrently in the same stream reach using time-lapsed electrical resistivity (ER) tomography. Using this hydrogeophysical approach, I am able to quantify hyporheic extent and transport beneath the cross-vane structure and riffle. I interpret from the geophysical

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11

Kindlund, Andrée. "Inversion of SkyTEM Data Based on Geophysical Logging Results for Groundwater Exploration in Örebro, Sweden." Thesis, Luleå tekniska universitet, Geovetenskap och miljöteknik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-85315.

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Declining groundwater tables threatens several municipalities in Sweden which drinking water is collected from. To ensure a sound drinking water supply, the Geological Survey of Sweden has initiated a groundwater exploration plan. Airborne electromagnetic measurements have seen an uprise in hydrogeophysical projects and have a great potential to achieve high-quality models, especially when combined with drilling data. In 2018, the Geological Survey of Sweden conducted an airborne electromagnetic survey, using the SkyTEM system, in the outskirts of Örebro, Sweden. SkyTEM is a time-domain system

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12

Ouedraogo, Moussa. "Caractérisation des aquifères de socle pour l'amélioration de la productivité des forages d'hydraulique villageoise dans le bassin versant du Bandama blanc amont (Nord de la Côte d'Ivoire)." Thesis, Université Paris-Saclay (ComUE), 2016. http://www.theses.fr/2016SACLS442/document.

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Le bassin versant du Bandama blanc amont, au nord de la Côte d’Ivoire, est situé sur un socle fissuré, composé de granites et de schistes, et constitue un aquifère pérenne pour l’approvisionnement en eau des populations. Cet aquifère de type fissuré est mal connu, tant dans la géométrie des réservoirs que dans le potentiel hydrogéologique des réserves qu’il contient. La précarité des populations rurales est en partie liée au manque d’eau potable ainsi qu’au nombre encore insuffisant des points d’approvisionnement. Un nombre important d’échecs a été observé lors de la réalisation des ouvrages d

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13

Harrouet, Titouan. "Contenu et flux hydriques en proche surface : développement de méthodes hydro-géophysiques utilisant des mesures thermiques et électromagnétiques." Electronic Thesis or Diss., université Paris-Saclay, 2025. http://www.theses.fr/2025UPASJ003.

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Ce travail s'inscrit dans le développement de méthodes hydro-géophysiques permettant le suivi de processus de transferts d'eau dans le sol et leurs lieux de stockage. Il porte plus particulièrement sur l'apport de méthodes de mesures thermiques et électromagnétiques et l'expérimentation sur plusieurs sites en Ile-de-France dont celui du marais de Jarcy (Essonne). Il a été montré précédemment dans la thèse d'Adrien Renaud (2023) que ce site est le siège d'importants rabattements de nappe en été, lorsque le couvert végétal très dense est actif, impliquant une évapotranspiration importante. Ces r

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14

Busato, Laura. "Non-invasive monitoring and numerical modeling of the Soil-Plant continuum." Doctoral thesis, Università degli studi di Padova, 2017. http://hdl.handle.net/11577/3425720.

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The Earth’s critical zone (ECZ) is the near-surface domain that regulates the availability of most life-sustaining resources. Among all the subdomains of the ECZ, a crucial role is played by the Soil-Plant continuum (SP), as it is a major performer of the exchanges of mass and energy between soil and plants (and then atmosphere). However, despite its importance and its strong interconnection with human activity, the characterization of this subdomain is still in an early stage, mainly because of the lack of spatial and temporal information regarding the occurring processes. To overcome this is

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15

Houzé, Clémence. "Etude des flux à l'interface nappe-rivière. Apport de l'outil hydrogéophysique couplé à des mesures hydrodynamiques." Thesis, Université Paris-Saclay (ComUE), 2017. http://www.theses.fr/2017SACLS217/document.

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Située à l'interface entre les eaux de surface et les eaux souterraines, la zone hyporhéique (ZH) est depuis maintenant plusieurs décennies considérée comme une zone cruciale pour la préservation des milieux aquatiques. Elle constitue souvent un indicateur fiable de la bonne qualité des eaux et une niche écologique primordiale pour de nombreuses espèces. Mais elle est aussi le lieu d'interaction entre deux masses d'eau de signature différente, ce qui conduit à la formation d'un milieu extrêmement fragile et siège d'un grand nombre de réactions biogéochimiques. L'objectif principal de cette thè

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16

Linde, Niklas. "Characterization of Hydrogeological Media Using Electromagnetic Geophysics." Doctoral thesis, Uppsala universitet, Geofysik, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-5912.

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Radio magnetotellurics (RMT), crosshole ground penetrating radar (GPR), and crosshole electrical resistance tomography (ERT) were applied in a range of hydrogeological applications where geophysical data could improve hydrogeological characterization. A profile of RMT data collected over highly resistive granite was used to map subhorizontal fracture zones below 300m depth, as well as a steeply dipping fracture zone, which was also observed on a coinciding seismic reflection profile. One-dimensional inverse modelling and 3D forward modelling with displacement currents included were necessary t

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17

Abi, Nader Anthony. "Développement d'une approche intégrée en hydro-géophysique pour l'étude multi-échelle des réservoirs karstiques : le cas du bassin versant de Fourbanne dans le massif du Jura." Electronic Thesis or Diss., Bourgogne Franche-Comté, 2023. http://www.theses.fr/2023UBFCD070.

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Comprendre le fonctionnement des aquifères karstiques est essentiel pour une gestion efficace des ressources en eau. La variabilité intrinsèque des terrains karstiques résulte de la dissolution de roches solubles telles que le calcaire, ce qui donne lieu à un réseau complexe et interconnecté de pertes, grottes, conduits souterrains et de dolines. Ce travail se concentre sur le bassin versant karstique de Fourbanne (montagnes du Jura, France), qui abrite un conduit souterrain principal, accessible par un puit artificiel de 20m. Différentes approches complémentaires sont proposées pour mieux car

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18

Cooke, Anne-Karin. "Characterisation of a new mobile absolute quantum gravimeter : application in groundwater storage monitoring." Thesis, Montpellier, 2020. http://www.theses.fr/2020MONTG043.

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Les gravimètres quantiques permettent une surveillance continue de la gravité absolue à haute fréquence tout en restant aisément transportables et facile à installer. Cette thèse a évalué les performances de mesure haute précision des premiers gravimètres quantiques absolus commerciaux AQG#A01 et AQG#B01 développés par Muquans. Cela a été réalisé en comparaison avec des gravimètres absolus et relatifs de haute précision et des données géophysiques et environnementales complémentaires. Ces acquisitions ont été effectuées dans des conditions contrôlées dans une perspectives de déploiement sur le

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19

Nkitnam, Elijah Edet. "Aquifer properties from Earth and barometric tides analysis : application to the Gallo-Roman archaeological site of Genainville (French Vexin)." Electronic Thesis or Diss., Sorbonne université, 2024. http://www.theses.fr/2024SORUS117.

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Le bien-être des sociétés humaines nécessite la connaissance des impacts réciproques entre les activités anthropiques et les services écosystémiques. Afin d'atténuer les changements climatiques globaux, régionaux et locaux, il faut développer des méthodes et des techniques pour maintenir des interactions précieuses entre sociétés humaines et écosystèmes. Dans le contexte continental, les inondations sont souvent des événements brutaux et catastrophiques, altérant le bien-être des sociétés humaines pendant des périodes plus ou moins longues et menaçant également le patrimoine culturel. La socié

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20

Creutzfeldt, Noah Angelo Benjamin. "The effect of water storages on temporal gravity measurements and the benefits for hydrology." Phd thesis, Universität Potsdam, 2010. http://opus.kobv.de/ubp/volltexte/2010/4857/.

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Temporal gravimeter observations, used in geodesy and geophysics to study variation of the Earth’s gravity field, are influenced by local water storage changes (WSC) and – from this perspective – add noise to the gravimeter signal records. At the same time, the part of the gravity signal caused by WSC may provide substantial information for hydrologists. Water storages are the fundamental state variable of hydrological systems, but comprehensive data on total WSC are practically inaccessible and their quantification is associated with a high level of uncertainty at the field scale. This stud

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21

Cattaneo, L. "CHARACTERIZATION OF THE SUBSURFACE THROUGH JOINT HYDROGEOLOGICAL AND GEOPHYSICAL INVERSION." Doctoral thesis, Università degli Studi di Milano, 2014. http://hdl.handle.net/2434/239175.

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Characterization of the subsurface heterogeneity, monitoring groundwater dynamics, modelling flow and transport in the subsoil are of paramount importance for protection of groundwater quality, design of remediation plans, control of restoration activities. One of the key physical parameters that control groundwater flow and solute transport is hydraulic conductivity. Both hydraulic conductivity and electrical resistivity depend on porosity, water content and textural properties. Moreover, the difficulties of directly and effectively measure hydraulic conductivity makes the possibility of pred

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22

Soro, Donissongou Dimitri. "Caractérisation et modélisation hydrogéologique d'un aquifère en milieu de socle fracturé : cas du site expérimental de Sanon (région du plateau central au Burkina Faso)." Thesis, Paris 6, 2017. http://www.theses.fr/2017PA066163/document.

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Le territoire burkinabè est constitué à plus de 80% de formations de socle. Ces formations renferment des ressources en eau souterraine qui constitue la seule source en eau potable de certaines populations. Cependant, le quart des forages réalisés en vue d’exploiter ces eaux sont négatifs. Une bonne compréhension du fonctionnement hydrogéologique et hydrodynamique des aquifères de socle qui sont très hétérogènes peut aider à résoudre ce problème. L’objectif de la thèse est de proposer un modèle conceptuel hydrogéologique en milieu de socle fracturé soudano-sahélien en combinant différentes mét

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23

Strobach, Elmar. "Hydrogeophysical investigation of water recharge into the Gnangara Mound." Thesis, Curtin University, 2013. http://hdl.handle.net/20.500.11937/1449.

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Increased demand for freshwater in combination with a drying climate has led to water table decline on the Gnangara Groundwater Mound north of Perth, Western Australia. For sustainable groundwater management, a regional-scale modelling system has been developed. Accurate groundwater modelling requires good estimates of aquifer recharge, which in the case of the Superficial Aquifer may be achieved by a Vertical Flux Model. Recharge studies provide this model with input parameters such as unsaturated hydraulic conductivity, soil moisture content and water retention potential. Another key compone

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Soro, Donissongou Dimitri. "Caractérisation et modélisation hydrogéologique d'un aquifère en milieu de socle fracturé : cas du site expérimental de Sanon (région du plateau central au Burkina Faso)." Electronic Thesis or Diss., Paris 6, 2017. https://accesdistant.sorbonne-universite.fr/login?url=https://theses-intra.sorbonne-universite.fr/2017PA066163.pdf.

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Le territoire burkinabè est constitué à plus de 80% de formations de socle. Ces formations renferment des ressources en eau souterraine qui constitue la seule source en eau potable de certaines populations. Cependant, le quart des forages réalisés en vue d’exploiter ces eaux sont négatifs. Une bonne compréhension du fonctionnement hydrogéologique et hydrodynamique des aquifères de socle qui sont très hétérogènes peut aider à résoudre ce problème. L’objectif de la thèse est de proposer un modèle conceptuel hydrogéologique en milieu de socle fracturé soudano-sahélien en combinant différentes mét

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25

Yeboah-Forson, Albert. "Hydrogeophysical Characterization of Anisotropy in the Biscayne Aquifer Using Geophysical Methods." FIU Digital Commons, 2013. http://digitalcommons.fiu.edu/etd/919.

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The anisotropy of the Biscayne Aquifer which serves as the source of potable water for Miami-Dade County was investigated by applying geophysical methods. Electrical resistivity imaging, self potential and ground penetration radar techniques were employed in both regional and site specific studies. In the regional study, electrical anisotropy and resistivity variation with depth were investigated with azimuthal square array measurements at 13 sites. The observed coefficient of electrical anisotropy ranged from 1.01 to 1.36. The general direction of measured anisotropy is uniform for most sites

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26

Fiorentino, Eve-Agnès. "Phénomènes électrocinétiques et transport multiphasique en milieux poreux." Thesis, Strasbourg, 2016. http://www.theses.fr/2016STRAH008/document.

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Le coefficient d'électrofiltration est simulé par méthode Lattice Boltzmann dans un chenal 2-D sur une grande gamme de salinité. L'influence de la permittivité et de la viscosité est discutée. La validité de l'équation d'Helmholtz Smoluchowski à de forts potentiels zeta est évaluée. Un modèle de conductivité intrinsèque est développé en prenant en compte les variations locales de conductivité, qui ont un impact significatif en la présence d'espèces polyvalentes. Étendu aux conditions non saturées, l'algorithme montre que la densité de charge électrique associée à l'interface eau-air est une co

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Manyama, Kinsley. "Hydrogeophysical characterisation of shallow coastal aquifers in the Western Cape, South Africa." University of the Western Cape, 2017. http://hdl.handle.net/11394/5972.

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Magister Scientiae - MSc (Environ & Water Science)<br>Coastal aquifers present a key groundwater resource for freshwater supply in many coastal zones of Africa, and its availability is largely driven by the physical hydrogeological properties. An understanding of the aquifer properties in coastal areas is fundamental in that these aquifers present unique resource largely controlled to a very large extent by its geological and hydrological features and process. This study thus analysed information of resistivity variation of formations, drilling samples, water levels and slug test data, in an a

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Dickson, Neil Edwin Matthew. "The integration of multi-scale hydrogeophysical data into numerical groundwater flow models." Thesis, Queen's University Belfast, 2015. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.680157.

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Throughout this research, geophysical data is utilised to constrain numerical groundwater flow models at two applied study areas: a sandstone aquifer in Northern Ireland and a basement rock aquifer in Benin, west Africa. In Northern Ireland, airborne passive magnetics data are used to determine regional heterogeneity occurrence combined with methods of upscaling / equivalence and a density function. Furthermore, a stochastic component is undertaken in the form of multiple point statistics. This analysis performs a probability simulation and pattern matching to determine a statistical occurrenc

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Blazevic, Lara Antonia. "Monitoring spatio-temporal water redistribution in the subsurface with seismic methods." Electronic Thesis or Diss., Sorbonne université, 2020. https://accesdistant.sorbonne-universite.fr/login?url=https://theses-intra.sorbonne-universite.fr/2020SORUS015.pdf.

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La caractérisation et la surveillance des systèmes d'eau souterraine sont fondamentales pour la conservation et la gestion des ressources en eau souterraine. Dans cette intention, l'hydrogéophysique fournit une série de méthodes non invasives pour étudier l'environnement souterrain peu profond et les processus qui s'y déroulent sur plusieurs échelles. Les applications hydrogéophysiques à méthode dites time-lapse sont notamment utiles pour surveiller la dynamique de l'eau et suivre les variations temporelles de la teneur en eau. Largement dominées par des méthodes électriques et électromagnétiq

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Jaumann, Stefan [Verfasser], and Kurt [Akademischer Betreuer] Roth. "Estimation of Soil Water Dynamics Based on Hydrogeophysical Measurements / Stefan Jaumann ; Betreuer: Kurt Roth." Heidelberg : Universitätsbibliothek Heidelberg, 2018. http://d-nb.info/1177385953/34.

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Dumont, Marc. "Caractérisation multi-échelle des structures hydrogéologiques en contexte volcanique insulaire par électromagnétisme héliporté : application à l’île de La Réunion." Thesis, La Réunion, 2018. http://www.theses.fr/2018LARE0010/document.

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L’île de La Réunion a été couverte par une vaste campagne de géophysique héliportée en 2014. Le dispositif SkyTEM a permis de cartographier l’anomalie du champ magnétique et la résistivité électrique du sous-sol jusqu’à 300 m de profondeur, et ce, sur l’ensemble de l’île. L’acquisition de ce jeu de données met en évidence la problématique de l’interprétation des données électromagnétiques héliportées à l’échelle régionale. L’interprétation d’un modèle 3D de résistivité d’une superficie 2 500 km2 nécessite la mise en place de méthodologies innovantes pour le confronter aux données géologiques,

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32

Mboh, Cho Miltin [Verfasser]. "Coupled hydrogeophysical inversion for soil hydraulic property estimation from time-lapse geophysical data / Cho Miltin Mboh." Bonn : Universitäts- und Landesbibliothek Bonn, 2012. http://d-nb.info/1043056599/34.

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O'Donnell, David Patrick. "FIELD AND MODELING STUDY OF THE EFFECTS OF STREAM DEPTH AND GROUND WATER DISCHARGE ON HYDROGEOPHYSICAL." Master's thesis, Temple University Libraries, 2012. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/187887.

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Geology<br>M.S.<br>Valley Creek, an urbanized stream in Southeastern Pennsylvania, has undergone changes typical of streams in urbanized areas, such as bank erosion, channel redirection, and habitat disruption. One area of disruption that has been little studied is the hyporheic zone, the top layer of the streambed where stream water exchanges with subsurface water and chemical transformations occur. The hyporheic zone of an 18 m reach of Valley Creek in Ecology Park was characterized using a tracer test coupled with a hydrogeophysical survey. Nested wells screened at depths of 20, 35, 50, and

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Gance, Julien. "Développements méthodologiques en géophysique haute résolution pour la caractérisation hydro-mécanique de glissements de terrain argileux." Thesis, Strasbourg, 2014. http://www.theses.fr/2014STRAH009.

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Ce projet de recherche répond à l'objectif d'améliorer notre connaissance des processus élémentaires contrôlant le comportement hydrologique post-rupture des glissements de terrain argileux, afin de pouvoir comprendre, reproduire et éventuellement prévoir leur comportement par des modèles hydromécaniques adaptés. Ce travail consiste à améliorer et développer des méthodes de traitement et d'interprétation de paramètres géophysiques en milieu argileux et hétérogène. Les objectifs principaux de ce travail sont : 1. D'améliorer des méthodes géophysiques et géodésiques de mesure de la déformation e

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Schwartz, Benjamin Farley. "Hydrogeophysical quantification of infiltration and recharge through soil-filled sinkholes using Time Domain Reflectometry and Electrical Resistivity Tomography." Diss., Virginia Tech, 2007. http://hdl.handle.net/10919/29748.

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This dissertation presents the results of a detailed physical and hydrogeophysical study of two soil-filled sinkholes mantled by ancient New River fluvial terrace deposits. Research was performed at the Virginia Tech Kentland Experimental Farms in Whitethorne, Virginia, USA between fall 2003 and spring 2007, and focused on characterizing infiltration, deep drainage, and recharge through soil-filled sinkholes. Using hydrogeophysical methods, the spatial and temporal distribution of soil moisture was modeled and potential recharge was quantified in two soil-filled sinkholes. Access-tube time

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Dangeard, Marine. "Développement d'une approche « time-lapse » des méthodes sismiques pour l'hydrogéophysique et la compréhension de la dynamique des hydrosystèmes." Electronic Thesis or Diss., Sorbonne université, 2019. http://www.theses.fr/2019SORUS476.

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La caractérisation et la compréhension des hydrosystèmes font partie intégrante de l’étude de la « Zone Critique » (ZC). Elles représentent un enjeu important pour la gestion et la protection des ressources en eaux de surface et en eaux souterraines. La géophysique et l’hydrogéophysique font partie des outils d’étude de cette fraction de la ZC et des processus qu’elle referme. Les méthodes sismiques de subsurface sont proposées afin de l’imager pour en définir la géométrie et la nature de ses compartiments. Comme la sismique repose sur les paramètres mécaniques du milieu, le signal mesuré est

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Abdel, Wahab Mohamed Abdel Wahab Attwa [Verfasser]. "Geophysical imaging of Cuxhaven coastal sediments : environmental and hydrogeophysical studies using DC, FDEM and SIP methods / Mohamed Abdel Wahab Attwa Abdel Wahab." Hannover : Technische Informationsbibliothek und Universitätsbibliothek Hannover (TIB), 2011. http://d-nb.info/1014253977/34.

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Gonzalez, Alicia. "Suivi sismologique de l'impact des cyclones sur la charge de fond de la Rivière des Pluies et de la Rivière du Mât à La Réunion." Thesis, La Réunion, 2019. http://www.theses.fr/2019LARE0018.

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Les cyclones tropicaux peuvent générer d'énormes taux de précipitation conduisant à des crues torrentielles. Les conséquences pour les infrastructures civiles et les populations peuvent être importantes car des quantités phénoménales de sédiments sont transportées vers l'océan. Les mesures directes du transport sédimentaire sont impossibles à mettre en œuvre dans ces conditions hydrodynamiques extrêmes. Afin de pallier ces limitations expérimentales, des études antérieures ont montré que la sismologie peut être un excellent outil pour accéder de façon indirecte aux informations relatives à la

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Steelman, Colby Michael. "Evaluating Vadose Zone Moisture Dynamics using Ground-Penetrating Radar." Thesis, 2012. http://hdl.handle.net/10012/6576.

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Near-surface sediments in the vadose zone play a fundamental role in the hydrologic system. The shallow vadose zone can act as a buffer to delay or attenuate surface contaminants before they reach the water table. It also acts as a temporary soil moisture reservoir for plant and atmospheric uptake, and regulates the seasonal groundwater recharge process. Over the past few decades, geophysical methods have received unprecedented attention as an effective vadose zone characterization tool offering a range of non-invasive to minimally invasive techniques with the capacity to provide detailed soil

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"Hydrogeophysical characterization of soil using ground penetrating radar." Université catholique de Louvain, 2003. http://edoc.bib.ucl.ac.be:81/ETD-db/collection/available/BelnUcetd-11062003-120300/.

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Mendoza, Trujillo Benito Guillermo, Francesco Macchione, and Salvatore Straface. "Characterization of real aquifers using hydrogeophysical measurements. An application to the chambo aquifer (Ecuador)." Thesis, 2014. http://hdl.handle.net/10955/1209.

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Ngobeni, David Dillon. "Hydrogeophysical investigation of the impact of invasive tree species on groundwater at the Dayspring Children's Village, South Africa." Thesis, 2014.

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Dayspring Children’s Village, which is located about 66 km northwest of Johannesburg, has been experiencing a chronic shortage of water for over 30 years. Five out of seven boreholes that are scattered within the school property are dry and there is evidence of contamination in one of the two wells that are producing water at two depths. The presence of bluegum (Eucalyptus globulus) trees is suspected to be the principal cause for the depletion of the aquifer(s) because of their documented high rate of transpiration. The purpose of this project is to determine the complex interaction between t

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CIAMPI, PAOLO. "Integrated multidisciplinary modeling to support the remediation of contaminated sites." Doctoral thesis, 2020. http://hdl.handle.net/11573/1362891.

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Hydrogeological uniqueness and chemical-physical peculiarities guide the contamination dynamics and decontamination mechanisms in the environmental arena. The experimental work carried out in 3 polluted sites in Italy, exhibiting different geological and contamination contexts, emphasized the contribution of the multitemporal and multidisciplinary geodatabase, which was created for the integrated management, representation, and analysis of different data, to reach a high-resolution characterization of underground geological heterogeneities, aquifers, and contaminated areas. The research aims

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McNaughton, Cameron Hugh. "Monitoring a Shallow Gasoline Release using GPR at CFB Borden." Thesis, 2011. http://hdl.handle.net/10012/6351.

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This hydrogeophysical field experiment evaluated the ability of high frequency (450 & 900 MHz) ground penetrating radar (GPR) to characterize the release of gasoline over an annual cycle of in situ conditions. In August 2008, 200 liters of E10 gasoline were released into the unconfined sand aquifer at CFB Borden. The 900 MHz profiling clearly shows the development of shallow (i.e., above 10 ns) high reflectivity in the vicinity of the trench immediately after the release. Additional lateral extension of high reflectivity zone was observed over the following 20 days until the seasonal water

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