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Rozprawy doktorskie na temat „Geophysical”

Autor: Grafiati
Data publikacji: 4 czerwca 2021
Data aktualizacji: 25 lipca 2025

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1

Woods, Andrew W. "Geophysical fluid flows." Thesis, University of Cambridge, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.306472.

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2

Shipp, Richard Michael. "Two-dimensional full wavefield inversion of wide-aperture marine seismic streamer data." Thesis, University of Cambridge, 2000. https://www.repository.cam.ac.uk/handle/1810/251747.

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Fourie, Christoffel Johannes Stephanus. "In-situ subsurface density estimations using a seismic technique." Pretoria : [s.n.], 2008. http://upetd.up.ac.za/thesis/available/etd-01162009-110629/.

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4

Cardoso, Silvana. "Mixing in geophysical flows." Thesis, University of Cambridge, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.321097.

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5

Persson, Kjell. "Integrated geophysical-geochemical methods for archaeological prospecting." Doctoral thesis, Stockholm, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-279.

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6

Cheung, See Nga Cecilia. "Experimental deformation in sandstone, carbonates and quartz aggregate." Thesis, State University of New York at Stony Brook, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=3717020.

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<p> The first part of my thesis is mainly focused on the effect of grain size distribution on compaction localization in porous sandstone. To identify the microstructural parameters that influence compaction band formation, I conducted a systematic study of mechanical deformation, failure mode and microstructural evolution in Bleurswiller and Boise sandstones, of similar porosity (&sim;25%) and mineralogy but different sorting. Discrete compaction bands were observed to develop over a wide range of pressure in the Bleurswiller sandstone that has a relatively uniform grain size distribution. In
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7

Perez, Altimar Roderick. "Brittleness estimation from seismic measurements in unconventional reservoirs| Application to the Barnett shale." Thesis, The University of Oklahoma, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=3617030.

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<p> Brittleness is a key characteristic for effective reservoir stimulation and is mainly controlled by mineralogy in unconventional reservoirs. Unfortunately, there is no universally accepted means of predicting brittleness from measures made in wells or from surface seismic data. Brittleness indices (BI) are based on mineralogy, while brittleness average estimations are based on Young's modulus and Poisson's ratio. I evaluate two of the more popular brittleness estimation techniques and apply them to a Barnett Shale seismic survey in order to estimate its geomechanical properties. Using spec
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8

TROTTER, BENNETT. "Pore Pressure Prediction in the Point Pleasant Formation in the Appalachian Basin, in parts of Ohio, Pennsylvania, and West Virginia, United States of America." The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1524213528591632.

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9

Pari, Giovanni. "Geophysical constraints on mantle dynamics." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp02/NQ27710.pdf.

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10

DeGiuli, Eric. "Turbulent flow in geophysical channels." Thesis, University of British Columbia, 2009. http://hdl.handle.net/2429/12802.

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The problem of turbulent ow in a rough pipe of arbitrary shape is considered. The classical Izakson-Millikan argument for a logarithmic velocity profile is presented, and matched asymptotic expansions are introduced. Scaled, dimensionless equations are produced and simplified. A simple mixing length turbulence model is presented, which closes the problem. To calibrate the model, the mechanical problem is solved in the case of a circular pipe. Excellent agreement with engineering relations is obtained. The mechanical problem for a non-circular pipe is posed, and the boundary layer problem is s
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11

Waugh, Darryn W. "Single-layer geophysical vortex dynamics." Thesis, University of Cambridge, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.239162.

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12

Mirza, Nabeel Aman. "Geophysical modelling of sediment permeability." Thesis, Bangor University, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.280908.

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13

BUSTAMANTE, SAMUEL GUSTAVO HUAMAN. "FORECASTING GEOPHYSICAL MEASUREMENTS: PSEUDO-WELLS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2012. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=22840@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO<br>CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO<br>No presente trabalho de tese é apresentado, analisado e avaliado um método inédito para prever perfis de poço (para um pseudo-poço), a partir de informações dos poços verticais vizinhos e dados de sísmica 3D. Este método é formado por quatro partes principais. Na primeira parte são processados os perfis de raio gama dos poços para produzir um conjunto de sinais estratificados. Estes resultados são utilizados na segunda parte para realizar a correlação lateral de poços, com um
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14

Wilson, John Max. "Computational Studies of Geophysical Systems." Thesis, University of California, Davis, 2019. http://pqdtopen.proquest.com/#viewpdf?dispub=10979293.

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<p> Earthquakes and tsunamis represent two of the most devastating natural disasters faced by humankind. Earthquakes can occur in matters of seconds, with little to no warning. The governing variables of earthquakes, namely the stress profiles of vast regions of the earth's crust, cannot be measured in a comprehensive manner. Similarly, tsunami parameters are often accurately determined only minutes before waves make landfall. We are therefore left only with statistical analyses of past events to produce hazard forecasts for these disasters. Unfortunately, the events that cause the most damage
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15

Khan, Sharon. "Studies in geophysical fluid dynamics." Thesis, University of Cambridge, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.620035.

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16

Bennett, Jesse E., Anthony T. Bowler, William R. Cavabaugh, et al. "GEOPHYSICAL SURVEYS AT VULCAN MINE." LASI Laboratory for Advanced Surface Imaging, The University of Arizona (Tucson, AZ), 1991. http://hdl.handle.net/10150/624556.

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17

Birken, Ralph A., Mohammed H. I. Hassouneh, Gail Heath, et al. "GEOPHYSICAL SURVEYS IN COCHISE COUNTY." LASI Laboratory for Advanced Surface Imaging, The University of Arizona (Tucson, AZ), 1994. http://hdl.handle.net/10150/624612.

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18

Andrews, Joseph N., Brian D. Backes, Scott Balay, et al. "GEOPHYSICAL SURVEYS IN PIMA COUNTY." LASI Laboratory for Advanced Surface Imaging, The University of Arizona (Tucson, AZ), 1995. http://hdl.handle.net/10150/624613.

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19

Barber, Lorraine, Greg Crum, David George, et al. "GEOPHYSICAL SURVEYS NEAR AJO, ARIZONA." LASI Laboratory for Advanced Surface Imaging, The University of Arizona (Tucson, AZ), 1997. http://hdl.handle.net/10150/624614.

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20

Betts, Nathan K., Poto Chongo, Nina K. Dieter, et al. "GEOPHYSICAL SURVEYS NEAR PATAGONIA, ARIZONA." LASI Laboratory for Advanced Surface Imaging, The University of Arizona (Tucson, AZ), 1998. http://hdl.handle.net/10150/624615.

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21

Cisneros, Gabriel, Marnee M. Dearman, Brian E. Dodds, et al. "GEOPHYSICAL SURVEYS NEAR PATAGONIA, ARIZONA." LASI Laboratory for Advanced Surface Imaging, The University of Arizona (Tucson, AZ), 1999. http://hdl.handle.net/10150/624616.

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A geophysical study of the Patagonia-Sonoita Nature Conservancy property was carried out to determine the depth to bedrock and the geometry of the underlying basin in the area. The survey was part of the ongoing U.S. Geological Survey studies of the region. CSAMT, TEM, DC Resistivity, Seismic, Gravity, and Magnetic surveys were performed. Many of the surveys were not able to map depth to bedrock because the depth of penetration of these surveys was less than the large depth to bedrock, which we encountered in this area. The best estimate of depth to bedrock in the center of the valley i
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22

Al-Zaabi, Mohamed, Julie Eastman, Laura Huebner, et al. "Geophysical Investigations near Yuma, Arizona." LASI Laboratory for Advanced Surface Imaging, The University of Arizona (Tucson, AZ), 2005. http://hdl.handle.net/10150/624622.

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VLF (Very Low Frequency), magnetic, TEM (Transient ElectroMagnetics), and Seismic were performed in Yuma, Arizona over two weekends in February and March of 2005. The targets of interest in Yuma included the depth to the shallow bedrock, the trace of the Algodones Fault, and the distribution and thickness of clay units. The VLF and magnetic surveys both proved not to be valuable for the interpretation of groundwater or bedrock depth. The Seismic surveys found a quartz monzonite horst structure at a depth of 8 meters and 250 in length and a graben at 8 meters depth and 48 meters in length. The
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23

Libarkin, Julie Carol. "Geophysical applications in compressional orogens." Diss., The University of Arizona, 1999. http://hdl.handle.net/10150/289021.

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Geologic endeavor is a continual search for windows into the past. Our ability to characterize ancient geological processes is only as good as the techniques we have at our disposal; often the desire to uncover new information drives the development of new geologic methods or the modification of old techniques. This dissertation is composed of a series of projects focused on gaining new insights into the history of orogenic systems through the application of existing techniques or the development of new methods. Three primary projects were undertaken, the first a paleoelevation study aimed at
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24

Cassisi, Carmelo. "Geophysical time series data mining." Doctoral thesis, Università di Catania, 2013. http://hdl.handle.net/10761/1366.

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The process of automatic extraction, recognition, description and classification of patterns from huge amount of data plays an important role in modern volcano monitoring techniques. In particular, the ability of certain systems to recognize different volcano status can help the researchers to better understand the complex dynamics underlying the geophysical system. The geophysical data are automatically measured and recorded by geophysical instruments. Their interpretation is very important for the investigation of earth s behavior. The fundamental task of volcano monitoring is to follow volc
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25

Spurr, Charles. "Seismic Analyses of the Crust and Moho beneath the Foreland Fold and Thrust Belt of the Southern Urals, Russia." University of Akron / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=akron1441883731.

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26

Mohshin, Mohammad. "Analysis of Well Log Data and a 2D Seismic Reflection Survey in the vicinity of London, Ohio." Wright State University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=wright1502304040084834.

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27

Tronicke, Jens. "Patterns in geophysical data and models." Universität Potsdam, 2006. http://www.uni-potsdam.de/imaf/events/ge_work0602.html.

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28

Kivior, Tomasz. "Eastern Tasmanian margin : a geophysical study /." Title page, contents and abstract only, 1997. http://web4.library.adelaide.edu.au/theses/09SB/09sbk62.pdf.

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29

Caulfield, C. P. "Stratification and buoyancy in geophysical flows." Thesis, University of Cambridge, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.386925.

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30

Vermeesch, Peggy Marie-Therese. "Geophysical modelling of the Chicxulub crater." Thesis, Imperial College London, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.429105.

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31

Hewitt, Ian. "Mathematical modelling of geophysical melt drainage." Thesis, University of Oxford, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.509957.

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Fluid flows involving transport of a liquid phase in close proximity with its solid phase involve continuous transfer of mass and heat, which can influence the nature of the drainage that occurs. We consider mathematical models for two such situations; magma flow in the mantle and water flow beneath glaciers. In part I, we derive a model for porous flow within a partially molten column of mantle undergoing decompression melting. By ignoring composition effects, and by scaling the equations appropriately, approximate analytical solutions can be found for one-dimensional upwelling, which allow t
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32

Armstrong, Kayt. "Archaeological geophysical prospection in peatland environments." Thesis, Bournemouth University, 2010. http://eprints.bournemouth.ac.uk/16238/.

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Waterlogged sites in peat often preserve organic material, both in the form of artefacts and pa1aeoenvironmenta1 evidence as a result of the prevailing anaerobic environment. After three decades of excavation and large scale study projects in the UK, the subdiscipline of wetland archaeology is rethinking theoretical approaches to these environments. Wet1and sites are generally discovered while they are being damaged or destroyed by human activity. The survival in situ of these important sites is also threatened by drainage, agriculture, erosion and climate change as the deposits cease to be an
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33

Murray, Stuart William. "Wave radiation in simple geophysical models." Thesis, University of Edinburgh, 2013. http://hdl.handle.net/1842/7922.

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Wave radiation is an important process in many geophysical flows. In particular, it is by wave radiation that flows may adjust to a state for which the dynamics is slow. Such a state is described as “balanced”, meaning there is an approximate balance between the Coriolis force and horizontal pressure gradients, and between buoyancy and vertical pressure gradients. In this thesis, wave radiation processes relevant to these enormously complex flows are studied through the use of some highly simplified models, and a parallel aim is to develop accurate numerical techniques for doing so. This thesi
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34

Adam, Claire Reid. "Geophysical investigations of the Western Pyrenees." Thesis, University of Bristol, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.357133.

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35

Scrobogna, Stefano. "On some models in geophysical fluids." Thesis, Bordeaux, 2017. http://www.theses.fr/2017BORD0601/document.

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Dans cette thèse nous étudions trois modèles décrivant la dynamique de l’écoulement d’un fluide à densité variable, dans des échelles spatio-temporelles grandes. Dans ce cadre, le mouvement relatif induit par des forces extérieures,comme la force de Coriolis ou la poussée hydrostatique, s’avère être beaucoup plus important que le mouvement intrinsèque du fluide induit par le transport des particules. Une tel déséquilibre contraint ainsi le mouvement, induisant des structures persistantes dans l’écoulement du fluide.D’un point de vue mathématique, l’une des difficultés consiste en l’étude des p
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36

Potts, Laramie V. "Satellite geophysical investigation of the moon /." The Ohio State University, 2000. http://rave.ohiolink.edu/etdc/view?acc_num=osu1488203857248761.

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37

Call, Christopher J., Arianna E. Gleason, Rennie B. Kaunda, et al. "Geophysical Surveys near Fort Huachuca, Arizona." LASI Laboratory for Advanced Surface Imaging, The University of Arizona (Tucson, AZ), 2002. http://hdl.handle.net/10150/624619.

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The United States Geological Survey (USGS) has been studying the water resources in the vicinity of Fort Huachuca, Arizona. As a part of this study, they contracted an Airborne Electromagnetic (AEM) survey of the region, which was flown in 1997. During the spring semester of 2002, the University of Arizona Geophysics Field Camp class conducted Transient Electromagnetic (TEM) surveys at five locations near AEM flight lines in order to provide an independent test of the resistivity structure. We used 100 X 100 m transmitting loops. A central induction loop array was employed where the tra
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38

Al-senani, Haitham S., Melissa R. Cox, Vasco S. Duke, et al. "Geophysical Surveys near Chino Valley, Arizona." LASI Laboratory for Advanced Surface Imaging, The University of Arizona (Tucson, AZ), 2003. http://hdl.handle.net/10150/624620.

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Four different geophysical methods were used near Chino Valley, Arizona in order to map a suspected andesite intrusive, identified as plug 15, which had originally been found using aeromagnetic data already acquired over the area. Magnetic, transient electromagnetic, seismic, and gravity measurements were collected between 3/1/2003-3/2/2003 and 3/22/2003-3/23/2003. The surveys were located near the center of section 35, township 17 North, Range 2 West, just north of Chino Valley, AZ. The magnetic and TEM surveys provided the best indication of the location and depth of the plug. The nor
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39

Asbury, Nicholas A., Margaret E. Barker, Joan Blainey, et al. "Geophysical Surveys near Sierra Vista, Arizona." LASI Laboratory for Advanced Surface Imaging, The University of Arizona (Tucson, AZ), 2004. http://hdl.handle.net/10150/624621.

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Five different geophysical methods were used near Sierra Vista, Arizona in order to determine the presence or absence of impermeable silt-clay layers in reference to a proposed water-retention system. Geophysical investigations were conducted at Woodcutters 3 and Basin Floor 1 (both approximately one kilometer long north-south and east-west transects), and School Basin (10 meter by 50 meter area where only TEM data were collected). Magnetic, VLF, seismic, EM 31 and 34, and TEM survey data were collected on February 28th and 29th and March 20th and 21st of 2004. Magnetic and VLF surveys
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40

Avanesians, Patrick, Giancarlo A. Daroch, John Fleming, et al. "GEOPHYSICAL INVESTIGATION OF THE TUCSON MOUNTAINS." LASI Laboratory for Advanced Surface Imaging, The University of Arizona (Tucson, AZ), 2011. http://hdl.handle.net/10150/624628.

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Transient Electromagnetic (TEM), Controlled Source Audio Magnetotellurics (CSAMT), Gravity, and Magnetic data were collected in the Tucson Mountains during the Spring semester, 2011. The goal was to investigate the extent of a low-resistivity porous sedimentary layer and faults that may form potential traps located under the surface volcanic layers, as interpreted by Lipman 1993. The sedimentary layer under the volcanics has the potential to be used for either water resources or compressed air storage to store solar energy. The results from the TEM and CSAMT surveys broadly correlated with the
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41

Alam, Alaa E., Mohammed Alabkari, Ahmed Mohammed A. Albahrani, et al. "Geophysical Surveys Near Tucson International Airport." LASI Laboratory for Advanced Surface Imaging, The University of Arizona (Tucson, AZ), 2013. http://hdl.handle.net/10150/624631.

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The Tucson International Airport Area (TIAA) Superfund site is an approximately ten square mile area in southeast Tucson, Pima County, Arizona in which several known contaminated water plumes have been identified, which are the result of improper disposal of industrial waste from multiple sources during the past sixty years. The most prominent of these contaminants are 1, 4-dioxane, hexavalent Chromium, and trichloroethylene (TCE), which exist in varying concentrations throughout the site. Groundwater contamination in Tucson was first identified in the 1950’s; however TIAA was not recognized a
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42

Hawkins, Rhys Peter. "Advances in Trans-dimensional Geophysical Inference." Phd thesis, Canberra, ACT : The Australian National University, 2017. http://hdl.handle.net/1885/141087.

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This research presents a series of novel Bayesian trans-dimensional methods for geophysical inversion. A first example illustrates how Bayesian prior information obtained from theory and numerical experiments can be used to better inform a difficult multi-modal inversion of dispersion information from empirical Greens functions obtained from ambient noise cross-correlation. This approach is an extension of existing partition modeling schemes. An entirely new class of trans-dimensional algorithm, called the trans-dimensional tree
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43

Johansson, Linnéa. "Modelling and interpretation of VTEM data from Soppero, Sweden." Thesis, Luleå tekniska universitet, Geovetenskap och miljöteknik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-64879.

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The geological and geophysical knowledge about the northernmost part of Sweden has recently increased due to the Barents project, which includes acquisition of modern geophysical and geological information on behalf of the Swedish Geological Survey (SGU). During August 2013, a helicopter-borne versatile time domain electromagnetic (VTEM) survey was performed by Geotech Ltd, in the Soppero area northeast of Kiruna. From the VTEM measurements, a number of TEM anomalous zones have been identified and two of them are located south and southeast of the Lannavaara village. The main conductive featur
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44

Mogren, Saad M. A. "Geophysical Investigations on the Najd Fault System." Thesis, University of Newcastle upon Tyne, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.489840.

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The Najd fault system (NFS) extends across the Arabian Shield from NW to SE and is considered to be one of the world's largest recognized Proterozoic transcurrent fault zone, exceeding 1100 kIn in length and approximately 350 k.1J1 wide insofar as it is exposed within the Arabian Shield. Interpretation of gravity and magnetic data indicates that the Najd shearing domain extends beyond the exposed Arabian Shield into the whole Arabian plate. The shear movement diminishes towards the northwest due to splaying of the shear strands along the N-S Nabitah weakness planes. Between these major shear z
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45

Bougher, Benjamin Bryan. "Machine learning applications to geophysical data analysis." Thesis, University of British Columbia, 2016. http://hdl.handle.net/2429/58972.

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The sedimentary layers of the Earth are a complex amorphous material formed from chaotic, turbulent, and random natural processes. Exploration geophysicists use a combination of assumptions, approximate physical models, and trained pattern recognition to extract useful information from complex remote sensing data such as seismic and well logs. In this thesis I investigate supervised and unsupervised machine learning models in geophysical data analysis and present two novel applications to exploration geophysics. Firstly, interpreted well logs from the Trenton-Black River study are used to trai
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46

Mainali, Ganesh. "Monitoring of tailings dams with geophysical methods." Licentiate thesis, Luleå : Luleå university of Technology, 2006. http://epubl.luth.se/1402-1757/2006/07.

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47

Granek, Justin. "Computing geologically consistent models from geophysical data." Thesis, University of British Columbia, 2011. http://hdl.handle.net/2429/39442.

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In this thesis an attempt is made to develop a methodology by which the information provided by downhole physical property logs can be leveraged to assist in the creation of constraints for the inversion of surface geophysics. I first motivate the research with an introduction to the utility of downhole physical property logging, including an overview of the diverse methods and data which can be acquired. Background information is also provided on statistical classification techniques and the UBC-GIF (University of British Columbia Geophysical Inversion Facility) inversion formulation so that
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48

Shen, Wei-Zhong. "Multichannel, multi-dimensional models for geophysical data." Thesis, McGill University, 1993. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=26144.

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Multi-channel, multi-dimensional geophysical data models are explored in this thesis. The basic data model we develop, the one-pass, multi-channel, multi-dimensional autoregressive (OPMCTDAR) data model, describes data as the linear superposition of a causal, multi-channel, two-dimensional, deterministic AR filter with a stochastic innovation which is assumed to have minimum-variance, and to be uncorrelated and Gaussian. Two-pass and four-pass extension of this basic model (TP or FPMCTDAR) are also developed in this work as a generalization of the AR data models described by Gregotski (1989),
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49

Wardlaw, Dennis. "GEOPHYSICAL SURVEY OF GREENWOOD CEMETERY, ORLANDO, FLORIDA." Master's thesis, University of Central Florida, 2009. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/3161.

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Advances in geophysical and remote sensing technology, specifically with ground penetrating radar (GPR) and geographic information systems (GIS), have led to increased use for archaeological research within cemeteries. Because of its non-invasive manner and high resolution of subsurface anomalies, GPR is ideal for surveying areas with marked or unmarked graves within cemeteries. Using a GIS assists cemetery research by facilitating integration of datasets and projection of spatial data. What has not been attempted to this point is systematic attempting to correlate detection rates of marked gr
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Hill, Christopher John. "Satellite laser ranging and some geophysical applications." Thesis, University of Nottingham, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.328388.

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