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Dissertations / Theses on the topic '2D electrical resistivity tomography'

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Published: 5 June 2025

Last updated: 2 August 2025

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1

Tufekci, Sinan. "Combined Surface-Wave and Resistivity Imaging for Shallow Subsurface Characterization." Ohio University / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1250891786.

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2

Shan, Chunling. "Natural and Controlled Source Magnetotelluric Data Processing and Modeling." Doctoral thesis, Uppsala universitet, Geofysik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-229917.

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In this thesis, four studies using different geophysical electromagnetic methods are presented. In the first study dealing with airborne measurements, the noise response due to the rotation of the aircraft and the aircraft itself as a metallic conductive body on the Earth's electromagnetic response in very low frequency and low frequency band was investigated. The magnetic fields are independent of the aircraft in the VLF band and part of the LF band. But at higher frequencies (above 100 kHz), the signals are more influenced by the aircraft. The aircraft also generates its own noise frequencie

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3

Rangel, Rodrigo Corrêa. "Inversão Conjunta 2D de Dados de Caminhamento Elétrico e Caminhamento TDEM Aplicados a Estudos Hidrogeológicos em Taubaté/SP." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/14/14132/tde-25052018-134331/.

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Nesta Pesquisa foi empregada a metodologia de Inversão Conjunta 2D de dados de caminhamento elétrico (CE) e caminhamento eletromagnético no domínio do tempo (CTDEM) num estudo hidrogeológico da Bacia de Taubaté. A área de estudo localiza-se na cidade de Taubaté/SP, onde o Aquífero Taubaté é uma importante fonte alternativa de água frente à recente crise hídrica. O Grupo Taubaté é o principal pacote sedimentar da bacia, sendo formado principalmente por folhelhos, que formam aquicludes, e arenitos, que formam o aquífero. Foram identificados 40 poços de exploração de água subterrânea na cidade, c

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4

Muchaidze, Iana. "Imaging in karst terrain using electrical resistivity tomography." Diss., Rolla, Mo. : Missouri University of Science and Technology, 2008. http://scholarsmine.mst.edu/thesis/pdf/Muchaidze_09007dcc80534d1b.pdf.

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Thesis (M.S.)--Missouri University of Science and Technology, 2008.<br>Vita. The entire thesis text is included in file. Title from title screen of thesis/dissertation PDF file (viewed August 26, 2008) Includes bibliographical references (p. 66-67).

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5

Usdosen, Ndifreke. "Algorithms for selecting optimal measurement locations in electrical resistivity tomography." Thesis, University of Reading, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.603521.

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The problem of determining optimal measurement setups that improve the resolution of reconstructed images is well known in several inverse problem applications such as magnetic tomography, electrical impedance tomography, and electrical resistivity tomography. In electrical resistivity tomography, for example, several optimisation strategies have been proposed, their aim being to collect "optimal datasets", which when inverted , should give tomographic resolutions close to that obtained from “comprehensive datasets" comprising all possible linearly independent measurements. While these optimis

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6

Pezeshkpour, Parsa. "Hydrogeological application of electrical resistivity tomography, implementing a fixed-electrode strategy." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0025/NQ38291.pdf.

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7

Schlosser, Kenneth. "MONITORING INFILTRATION FROM NATURAL STORMS USING TIME-LAPSE ELECTRICAL RESISTIVITY TOMOGRAPHY." Master's thesis, Temple University Libraries, 2017. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/466404.

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Geology<br>M.S.<br>Time-lapse electrical resistivity tomography (TL-ERT) enables an accurate characterization of the heterogeneity of flow through the unsaturated zone especially when compared to point measurements taken within the same survey area. The most powerful tool for understanding the unsaturated zone is a combination of several techniques. Many models of unsaturated zone flow assume a uniform wetting front even though the existence of preferential flow paths is well-documented in the literature. TL-ERT surveys were collected perpendicular to a stream at the Stroud Water Research Cent

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8

Zadehkoochak, Mohsen. "Image reconstruction and spectral expansion analysis in electrical impedance tomography." Thesis, University of Southampton, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.385528.

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9

Marklund, Per. "A 2D Electrical Resistivity Survey of Palsas in Tavvavuoma, sub-arctic Sweden." Thesis, Uppsala universitet, Luft-, vatten och landskapslära, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-219932.

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Electrical resistivity tomography (ERT) is a commonly used geophysical method to investigate permafrost in the mountain environment, but few studies have employed this method in a permafrost affected peatland. For this thesis, 5 ERT profiles were measured over 17 palsas and peat-plateaus in a palsa peatland environment in Tavvavuoma, northern Sweden, where the primary aim was to investigate the depth to the base of permafrost under the mounds. These depths are also used to estimate the excess ice fraction (EIF), which is indicative of the proportion of segregation ice in the frozen core under

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10

Perri, Maria Teresa. "Time-lapse electrical resistivity tomography for the dynamic characterization of hydrogeological systems." Doctoral thesis, Università degli studi di Padova, 2012. http://hdl.handle.net/11577/3425454.

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The saturated and unsaturated zones deeper than a few meters from the surface are difficult to study using traditional hydrogeological techniques alone (conventional soil/water sampling, in-situ test, laboratory measurements): these techniques are invasive, can modify water circulation and may provide too sparse information about subsurface processes, due to the localized and limited nature of their dataset (based on few boreholes). This is the reason why non-conventional methods are gaining popularity; in particular, a key role is played by geophysical methods: they may provide 2D/3D informa

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11

Liu, Shuyun. "A sequential inverse approach for hydraulic tomography and electrical resistivity tomography: An effective method for site characterization." Diss., The University of Arizona, 2001. http://hdl.handle.net/10150/279846.

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Hydraulic tomography (i.e., a sequential aquifer test) has recently been proposed as a method for characterizing aquifer heterogeneity. In this study a sequential inverse approach is developed to interpret results of hydraulic tomography. The approach uses an iterative geostatistical inverse method to yield the effective hydraulic conductivity of an aquifer, conditioned on each set of head/discharge data. To efficiently include all the head/discharge data sets, a sequential conditioning method is employed. Two-dimensional numerical experiments were conducted to investigate the optimal sampling

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12

Li, Yi. "Key issues of 2D/3D image reconstruction in electrical tomography." Thesis, University of Manchester, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.489019.

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13

Slater, Lee David. "An investigation of the ability of cross-borehole electrical imaging to assist in the characterisation of hydrogeological properties at the field scale." Thesis, Lancaster University, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.360648.

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14

Agramakova, Yulia. "Time-lapse electrical resistivity tomography applied to cave sustainability (Barbados) and groundwater exploration (Saint Lucia)." Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/1721.1/65328.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, February 2011.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 65-69).<br>In this work we apply the method of two-dimensional time-lapse electrical resistivity tomography (2D time-lapse ERT) for two different problems. In the first problem, we monitor the structural stability of the roof of the Great Hall cavern in the Harrison's cave system, Barbados. We present an interpretation and comparison of two sets of resistivity data collected over the Great H

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15

Miceli, Christina. "Seasonal Cycling in Electrical Resistivities at Ten Thin Permafrost Sites, Southern Yukon and Northern British Columbia." Thèse, Université d'Ottawa / University of Ottawa, 2012. http://hdl.handle.net/10393/23463.

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Permanent electrode arrays were set up at ten monitoring sites from Whitehorse, Yukon, to Fort St. John, British Columbia, in order to gain a clearer perspective of the effectiveness of electrical resistivity tomography (ERT) monitoring over an annual cycle of freezing and thawing. This research forms part of a longer-term project that is attempting to use ERT to examine changes in permafrost resulting from climate change. Inter-site and intra-site variability were examined by installing and maintaining data-loggers to monitor active layer and shallow permafrost temperatures, air temperatures,

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16

Kuntz, Zoé. "Electrical Resistivity Tomography Investigations of Discontinuous Mountain Permafrost and its Relation to Elevation and Vegetation, Yukon." Thesis, Université d'Ottawa / University of Ottawa, 2016. http://hdl.handle.net/10393/35577.

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This study seeks to better understand the relationship between permafrost, elevation and vegetation cover, and to test the hypothesis that changes in mountain permafrost distribution and characteristics occur at vegetation type boundaries, as they do in latitudinal permafrost. Twelve electrical resistivity tomography (ERT) surveys were completed at vegetation transitions on selected slopes near Whitehorse and Dawson, Yukon, in July 2015. Wenner arrays with 2 m spacing between electrodes were used to complete the 80-280 m long surveys. Organic layer thickness and vegetative species composition

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17

Carsillo, Vincent John. "MONITORING STORMWATER INFILTRATION IN A VACANT LOT COMPARING TIME-LAPSE ELECTROMAGNETIC INDUCTION AND ELECTRICAL RESISTIVITY TOMOGRAPHY." Master's thesis, Temple University Libraries, 2018. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/518905.

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Geology<br>M.S.<br>Vacant lots in cities and surrounding urban areas can potentially be used for stormwater management because they are pervious. However, the extent to which vacant lots provide pervious cover to increase infiltration and reduce stormflow is poorly understood. The goal of this study was to develop faster methods for monitoring stormwater infiltration to improve characterization of heterogeneous urban systems. Geophysical techniques are capable of mapping and characterizing subsurface materials, but are often limited by time and sensitivity constraints. In this study, the infil

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18

Johnson, Samuel Steven. "Estimation of volumetric optical coherence tomography measurements from 2D color fundus photographs using machine learning." Thesis, University of Iowa, 2019. https://ir.uiowa.edu/etd/6775.

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The optic nerve head is the location in the rear of the eye where the nerves exit the eye towards the brain. Swelling of the optic nerve head (ONH) is most accurately quantitatively assessed via volumetric measures using 3D spectral-domain optical coherence tomography (SD-OCT). However, SD-OCT is not always available as its use is primarily limited to specialized eye clinics rather than in primary care or telemedical settings. Thus, there is still a need for severity assessment using more widely available 2D fundus photographs. In this work, we propose machine-learning methods to locally estim

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19

Ishizu, Keiichi. "Clarifying detailed resistivity structures in seafloor hydrothermal fields by inversion of electric and electromagnetic data." Kyoto University, 2020. http://hdl.handle.net/2433/253259.

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20

Maxime, Arsène Duguay. "Permafrost Changes Along the Alaska Highway Corridor, Southern Yukon, from Ground Temperature Measurements and DC Electrical Resistivity Tomography." Thèse, Université d'Ottawa / University of Ottawa, 2013. http://hdl.handle.net/10393/24300.

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Permafrost temperatures were measured by the Geological Survey of Canada (GSC) in 1977-1981 at boreholes along a proposed pipeline route in the southern Yukon. Analysis of climate station records indicate that mean annual air temperatures in the region have since increased by 0.5-1.0˚C. Renewed interest in the pipeline and the need to develop adaptation strategies for existing highway infrastructure have meant that information on permafrost and geotechnical conditions must be updated. To accomplish this goal, a total of eight GSC boreholes ranging in depth from 5-9 m were loc

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21

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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22

Englert, Andreas, Andreas Kemna, Jun-feng Zhu, Jan Vanderborght, Harry Vereecken, and Tian-Chyi J. Yeh. "Comparison of smoothness-constrained and geostatistically based cross-borehole electrical resistivity tomography for characterization of solute tracer plumes." EDITORIAL BOARD WATER SCIENCE & ENGINEERING, 2016. http://hdl.handle.net/10150/624391.

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Experiments using electrical resistivity tomography (ERT) have shown promising results in reducing the uncertainty of solute plume characteristics related to estimates based on the analysis of local point measurements only. To explore the similarities and differences between two cross-borehole ERT inversion approaches for characterizing salt tracer plumes, namely the classical smoothness-constrained inversion and a geostatistically based approach, we performed two-dimensional synthetic experiments. Simplifying assumptions about the solute transport model and the electrical forward and inverse

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23

Frommel, Jamin C. "INTEGRATED GEOPHYSICAL INVESTIGATION OF KARST FEATURES – INNER BLUEGRASS REGION OF KENTUCKY." UKnowledge, 2012. http://uknowledge.uky.edu/ees_etds/5.

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High-resolution electrical-resistivity, seismic-refraction, and seismic-reflection surveys were performed at three locations in the Inner Bluegrass Region of Kentucky along coincident survey lines in order to correlate results and determine which method is most effective at locating karst features in this area. The first two survey locations at Slack’s Cave and the Kentucky Horse Park were chosen in order to investigate known karst features. High and low electrical-resistivity anomalies were correlated to air- and water-filled karst voids, respectively. Seismic velocity anomalies, including pa

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24

Van, Niekerk Ashton. "A spatial-temporal conceptualization of groundwater flow distribution in a granite fractured rock aquifer within the southern supersite research catchment of the Kruger National Park." Thesis, University of the Western Cape, 2014. http://hdl.handle.net/11394/4285.

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Masters of Science<br>Understanding the hydrogeology of fractured or crystalline rocks is complicated because of complex structure and a porosity that is almost exclusively secondary. These types of geologies exhibit strong heterogeneities and irregularities contrasted in hydraulic properties, spacing and flow direction within fractured rock aquifers. Therefore it is important to develop a conceptual model based on site specific data such as the hydraulic roles between groundwater and nearby hillslope/surface water bodies in order to understand its movement within the environment. Therefore t

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25

Bergmann, Peter [Verfasser]. "Time-lapse seismic and electrical resistivity tomography combined for monitoring of the CO2 storage site, Ketzin, Germany / Peter Bergmann." Kiel : Universitätsbibliothek Kiel, 2013. http://d-nb.info/1033789933/34.

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26

Oldenborger, Greg Arthur. "Advances in electrical resistivity tomography : modeling, electrode position errors, time-lapse monitoring of an injection/withdrawal experiment, and solution appraisal /." ProQuest subscription required:, 2006. http://proquest.umi.com/pqdweb?did=1179956331&sid=1&Fmt=2&clientId=8813&RQT=309&VName=PQD.

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Thesis (Ph. D.)--Boise State University, 2006.<br>Includes abstract and vita. Includes bibliographical references (leaves 319-331). Also available online via the ProQuest Digital Dissertations database.

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27

Sun, Jiangtao. "Fringe effect of electrical capacitance and resistance tomography sensors and its application in 3D imaging." Thesis, University of Manchester, 2014. https://www.research.manchester.ac.uk/portal/en/theses/fringe-effect-of-electrical-capacitance-and-resistance-tomography-sensors-and-its-application-in-3d-imaging(67894440-37f5-4897-9172-70d06c7e1765).html.

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This PhD work is dedicated to investigating the fringe effect of electrical capacitance tomography (ECT) and electrical resistance tomography (ERT) sensors systematically, exploring possible solutions and developing a novel 3D imaging technique by utilising the fringe effect of electrical tomography (ET) sensors. By referring to 2D simulation results, the fringe effect is investigated for 3D ERT and ECT sensor models with or without grounded guards, and with different axial lengths of electrodes. Simulation results reveal that increasing the electrode length or adopting grounded guards can red

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28

Mol, L. "Sandstone weathering, Electrical Resistivity Tomography, and the deterioration of San Rock Art in the Golden Gate Highlands National Park, South Africa." Thesis, University of Oxford, 2011. http://ora.ox.ac.uk/objects/uuid:e73c62d5-5dbb-4fb9-abe5-3de53efe5ced.

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Electrical Resistivity Tomography (ERT) is a novel technique which can be used to build up a 2D pseudo-section of resistivity distribution of a porous material. Here, it is used to visualise internal moisture regimes by measuring the resistivity distribution of transects within sandstone, inferring that high resistivity equals low moisture content and vice versa. This method was used to perform two intermediate complexity laboratory tests; the first one to determine high-resolution, multi-scale drying patterns of sandstone, the second to determine capillary ingress of moisture within a sandsto

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Silva, Olavo Luppi. "Detecção da contração muscular através da tomografia de impedância elétrica." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/3/3152/tde-18072013-154905/.

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Atualmente existem diversos métodos e equipamentos disponíveis no mercado para análise da biomecânica do movimento humano. No entanto, mesmo uma equipe multidisciplinar, dispondo de um laboratório completo de análise do movimento, pode falhar na identificação de quais grupos musculares estão sendo recrutados durante um exercício. Sobretudo quando a musculatura de interesse é profunda. O objetivo desta tese é propor formas de detectar a contração muscular através da Tomografia por Impedância Elétrica (TIE). Um modelo de elementos finitos de condução elétrica é utilizado para resolver o problema

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30

Gebregziabher, Gared Berhanu [Verfasser]. "Environmental and engineering geophysical studies for sinkhole problems using seismic reflection, refraction tomography, electrical resistivity imaging, and joint inversions / Berhanu Gebregziabher Gared." Hannover : Technische Informationsbibliothek und Universitätsbibliothek Hannover (TIB), 2011. http://d-nb.info/104185143X/34.

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31

Crawford, Matthew M. "HYDROLOGIC MONITORING AND 2-D ELECTRICAL RESISTIVITY IMAGING FOR JOINT GEOPHYSICAL AND GEOTECHNICAL CHARACTERIZATION OF SHALLOW COLLUVIAL LANDSLIDES." UKnowledge, 2018. https://uknowledge.uky.edu/ees_etds/61.

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Landslide characterization and hazard assessments require multidisciplinary approaches that connect geologic processes with geotechnical parameters. Field monitoring of hydrologic variables such as water content and water potential, coupled with geoelectrical measurements that can establish relationships used for geotechnical and landslide hazard investigations is deficient. This study brings together different techniques to develop a methodology that connects geoelectrical measurements and shear strength. A field-based framework was established that includes (1) analysis of long-term soil moi

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32

Rugh, David F. "Evaluating Preferential Recharge in Blue Ridge Aquifer Systems Using Saline Tracers." Thesis, Virginia Tech, 2006. http://hdl.handle.net/10919/35929.

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Multiple saline tracers were used to explore the role of geologic structure on groundwater recharge at the Fractured Rock Research Site in Floyd County, Virginia. Tracer migration was monitored through soil, saprolite, and fractured crystalline bedrock for a period of 3 months with chemical, physical, and geophysical techniques. Potassium chloride (KCl) and potassium bromide (KBr) tracers were applied at specific locations on the ground surface to directly test flow pathways in a shallow saprolite and deep fractured rock aquifer. Previous work at the Fractured Rock Research Site have iden

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33

ARATO, ALESSANDRO. "2-D and 3-D tools for electrical imaging in environmental applications." Doctoral thesis, Politecnico di Torino, 2013. http://hdl.handle.net/11583/2510297.

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The work presented in this thesis is focused on the characterization of contaminated sites via the application of non-invasive methods, such as electrical resistivity and electromagnetic techniques. With the aim of improving the relationships between geophysical parameters and hydro-geological features of the subsoil, some innovative methods are proposed. In particular, being electrical resistivity tomography an ill-posed and under-determined problem, the solution is computed by an over-parameterization of the model element with respect of the available measured data. The need to improve the r

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Nygren, Anton, Edvard Nordenskjöld, and Erik Östblom. "Groundwater occurrence and quality in Bulawayo province, Zimbabwe." Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-300718.

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This study focused on determining the groundwater flow paths in the crystalline subsurface rocks of the Bulawayo metropolitan, Zimbabwe, through analysing the discontinuities of the electrical properties of the ground, as well as in the magnetic field of the underlying rocks. Further, borehole water quality was analysed by measuring and mapping several chemical parameters, specifically TDS, salinity and the electrical conductivity. The electrical and magnetic anomalies were measured at two field sites within the Bulawayo province, the Harry Allen Golf Course and the Barbour Fields dumpsite, wh

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Aning, Akwasi acheampong. "Bosumtwi impact crater : use of electrical resistivity tomography (ERT) to map the geometry of the inner wall of the crater and the impact related structures." Phd thesis, Université Paris Sud - Paris XI, 2012. http://tel.archives-ouvertes.fr/tel-00849778.

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Des mesures de résistivité électrique et des campagnes d'observations géologiques ont été menées pour cartographier le contact sédiment/roche basale ainsi que les structures d'impact associées au cratère d'impact Bosumtwi datant de 1,07 millions d'années. Le cratère de 10,5 km de diamètre s'est formé dans des roches métamorphiques du Précambrien (2,1 à 2,2 milliard d'années), d'origine sédimentaire et volcanique. Il est actuellement rempli par le lac Bosumtwi de 8,5 km de diamètre. Ce cratère est la source des tektites et microtektites dispersées jusqu'en Côte d'Ivoire et au large des côtes ou

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Bodine, Tyler S. "Reservoir Study and Facies Analysis of the Big Clifty Sandstone in South Central Kentucky." TopSCHOLAR®, 2016. http://digitalcommons.wku.edu/theses/1610.

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The Big Clifty (Jackson) Sandstone Member of the Golconda Formation is the most important of the Mississippian (Chesterian) heavy-oil reservoirs in the southeastern Illinois Basin. Heavy oil reservoirs, or asphalt rock deposits, have been studied extensively in south central and western Kentucky, and ~2 billion barrels of original oil in place (OOIP) have been proposed to occur in the Big Clifty Sandstone. Despite high OOIP estimates, heterogeneities in the reservoir negatively impact the production of heavy oil deposits. Heterogeneities related to depositional facies changes are poorly unders

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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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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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Keuschnig, Markus Verfasser], Michael [Akademischer Betreuer] [Gutachter] Krautblatter, Annette [Gutachter] Menzel, and Lothar [Gutachter] [Schrott. "Long-term monitoring of permafrost-affected rock walls : Towards an automatic, continuous electrical resistivity tomography (AERT) monitoring for early warning systems / Markus Keuschnig ; Gutachter: Michael Krautblatter, Annette Menzel, Lothar Schrott ; Betreuer: Michael Krautblatter." München : Universitätsbibliothek der TU München, 2016. http://d-nb.info/1122286112/34.

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Crowley, Kyle McKinley. "Electrical Characterization, Transport, and Doping Effects in Two-Dimensional Transition Metal Oxides." Case Western Reserve University School of Graduate Studies / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=case1597327584506971.

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Grisey, Elise. "Impact de l'évolution des déchets d'une installation de stockage de déchets non dangereux sur l'environnement - Site d'étude : l'ISDND d'Etueffont (Territoire de Belfort - France)." Thesis, Besançon, 2013. http://www.theses.fr/2013BESA2029/document.

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Ce travail a pour objectif d’étudier l’impact d’une installation de stockage de déchets nondangereux sur l’eau souterraine. L’ISDND d’Étueffont (90) dont le mode d’exploitation associedes prétraitements mécanique et biologique (broyage et maturation aérobie) comporte un casiernon sécurisé ainsi qu’un casier étanche. La caractérisation des lixiviats sur 21 ans (1989-2010)montre une dégradation rapide des déchets. Un état de stabilisation est atteint en fin de suivi. Lesprétraitements ont permis d’accélérer la dégradation des déchets et de réduire le potentiel polluantde l’ISDND. Les lixiviats s

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Fachin, Sérgio Junior da Silva. "Ensaios geoelétricos 2D no antigo lixão de Ribeirão Preto-SP: avaliação de parâmetros de aquisição e monitoramento ambiental do problema." Universidade de São Paulo, 2007. http://www.teses.usp.br/teses/disponiveis/14/14132/tde-09112007-152210/.

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Em razão da crescente preocupação com a proteção ao meio ambiente e preservação da qualidade das águas superficiais e subterrâneas, as áreas de disposição de resíduos, tanto domésticos como industriais, têm merecido especial atenção das instituições de pesquisa ligadas à proteção ambiental. Atualmente o uso dos métodos geoelétricos vem se destacando como metodologia indireta de investigação de áreas afetadas pela disposição inadequada de resíduos sólidos urbanos e industriais pois fornecem, desde que adequadamente escolhidas as técnicas e os parâmetros de aquisição, informações importantes com

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Genelle, Fanny. "Les méthodes géophysiques pour la caractérisation des couvertures d’installation de stockage de déchets." Thesis, Bordeaux 1, 2012. http://www.theses.fr/2012BOR14522/document.

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Parmi l’ensemble des matériaux constitutifs d’une couverture d’installation de stockage de déchets, l’argile et le GéoSynthétique Bentonitique (GSB), couramment utilisés, peuvent présenter des défauts qu’il est nécessaire de caractériser afin de prévoir les éventuels travaux de remise en état partielle ou totale du site. L’objectif de cette thèse est de déterminer la capacité des méthodes géophysiques de Tomographie de Résistivité Electrique (TRE), de Polarisation Spontanée (PS) et d’Automatic Resistivity Profiling (ARP) à caractériser les couvertures. Pour cela, un site expérimental constitué

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Gresse, Marceau. "Imagerie géophysique (électrique et sismique) haute résolution et modélisation du système hydrothermal superficiel de la Solfatare de Pouzzoles, Italie du Sud. Application à l’étude des processus hydrothermaux." Thesis, Université Grenoble Alpes (ComUE), 2017. http://www.theses.fr/2017GREAU035/document.

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Les Champs Phlégréens, situés dans la métropole napolitaine (Italie du sud), forment l’une des plus grandes structures volcaniques au monde. Depuis 1950, ce complexe volcanique manifeste un regain d’activité, qui s’est amplifié au cours de la dernière décennie. Cette accélération s’exprime au travers d’une intensification de la sismicité, de la déformation du sol ainsi qu’une extension de la zone de dégazage. L’ensemble des récentes études s’accorde à dire que le système s’achemine actuellement vers un point critique, sans toutefois pouvoir préciser quand et où pourrait avoir lieu une éventuel

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Suryo, Eko Andi. "Real - time prediction of rainfall induced instability of residual soil slopes associated with deep cracks." Thesis, Queensland University of Technology, 2013. https://eprints.qut.edu.au/63775/1/Eko_Andi_Suryo_Thesis.pdf.

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The early warning based on real-time prediction of rain-induced instability of natural residual slopes helps to minimise human casualties due to such slope failures. Slope instability prediction is complicated, as it is influenced by many factors, including soil properties, soil behaviour, slope geometry, and the location and size of deep cracks in the slope. These deep cracks can facilitate rainwater infiltration into the deep soil layers and reduce the unsaturated shear strength of residual soil. Subsequently, it can form a slip surface, triggering a landslide even in partially saturated soi

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BELGHAZAL, HAJAR. "Modelisation des aquiferes thermaux avec des methodes geophysiques integrees." Doctoral thesis, Università degli Studi di Cagliari, 2012. http://hdl.handle.net/11584/266084.

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Written work here was undertaken in order to investigate geothermal reservoirs associated with major faults, located in Caldes de Montbui, Spain, and Sardara, Sardinia. This thesis has two independent parts. The first is a theoretical profile of geophysical methods applied in this work. The second focuses on the development of a methodology for cross-validation between the electromagnetic model (EM), densities models, and models of resistivity. The development and application of this methodology were in two hydrothermal environments. To improve the knowledge of the structural context of therma

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Vanella, Daniela. "Monitoring and modeling fluxes transfer processes in soil-plant-atmosphere continuum across scales." Doctoral thesis, Università di Catania, 2017. http://hdl.handle.net/10761/4084.

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Alle interazioni tra le diverse componenti del sistema suolo-pianta-atmosfera (SPA) è attribuito un ruolo critico nel ciclo idrologico e della biosfera terrestre. La comunità scientifica specializzata è sempre più consapevole della necessità di portare avanti studi a carattere interdisciplinare per la comprensione delle interazioni funzionali tra le risorse naturali ed i relativi problemi di sostenibilità del sistema SPA. All interno di tali studi interdisciplinari, l analisi delle interazioni suolo-radice risulta rilevante anche per la gestione ottimale dell'irrigazione, in particolare nell

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Manoli, Gabriele. "Contribution to modeling of soil-plant-atmosphere interactions and coupled hydro-geophysical data assimilation." Doctoral thesis, Università degli studi di Padova, 2013. http://hdl.handle.net/11577/3423556.

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Understanding the complex feedback mechanisms regulating the land-atmosphere system has become a scientific imperative, as human induced changes may impact the stability of the Biosphere, both locally and globally. The present thesis work aims at improving current understanding and forecasting capabilities of the Soil-Plant-Atmosphere (SPA) continuum. To this purpose a numerical model of soil moisture dynamics is coupled with plant transpiration and photosynthesis. Soil moisture dynamics is modeled by the 3-D Richards equation and plant uptake is described by an Ohm's law type model accounting

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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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Boubaki, Nerouz. "Détection de cavités par deux méthodes géophysiques : radar de sol et mesures de résistivités électriques." Phd thesis, Université Paris Sud - Paris XI, 2013. http://tel.archives-ouvertes.fr/tel-00855987.

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La détection de cavités en milieu urbain est importante pour prévenir différentes causes d'accidents liés à des possibles effondrements. Les cavités sont aussi des cibles d'intérêts pour les archéologues, car les cavités oubliées sont de potentielles sources de matériel révélant des usages passés. Ces cavités sont de tailles différentes, d'origine anthropique ou non, en milieu extérieur ou sous des bâtiments. Leur taille, ainsi que les propriétés physiques du milieu extérieur dans lequel elles se situent, permettent l'utilisation de différentes méthodes géophysiques. Nous nous sommes concentré

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