Relevant bibliographies by topics / Geophysis / Dissertations / Theses
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Dissertations / Theses on the topic 'Geophysis'

Author: Grafiati
Published: 4 June 2021
Last updated: 28 July 2025

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1

Pairmain, D. "Image processing in geophysics." Thesis, University of Oxford, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.375293.

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2

Torikka, Niklas. "3D Modelling of TEM Data : from Rajapalot Gold-Cobalt prospect, northern Finland." Thesis, Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-75756.

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The Rajapalot gold-cobalt project in northern Finland is an exciting, relatively new discovery, still being explored with hopes to start mining in the future. The area was found by a IP/Resistivity survey in 2013. Extensive geophysical follow-up surveys have delineated several electromagnetic targets, one of which, named Raja, is the target anomaly this master thesis is built upon. A TEM survey was carried out during late August to early September 2018. The data collected was analyzed, processed and later modelled in Maxwell using Leroi, a CSIRO module. Three separate models are produced with
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3

Chapel, Brian Ernie. "Digital disk recorder for geophysics." Thesis, University of British Columbia, 1985. http://hdl.handle.net/2429/24592.

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This thesis describes the design and testing of a floppy disk drive based digital recorder. The device was originally built for a geomagnetic research project, but is also suitable for other phenomena with time scales from fractions of a second to approximately one day. The system is designed specifically to improve the reliability for long-term observing programs and to enhance the efficency of the subsequent data analysis procedures. Using an STD-Z80 BUS microcomputer, under the control of a Forth language program, the recorder stores digital data on removable 8-inch floppy disks. This thesi
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4

Garrick-Bethell, Ian 1980. "Early lunar geology and geophysics." Thesis, Massachusetts Institute of Technology, 2009. http://hdl.handle.net/1721.1/47845.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 2009.<br>Includes bibliographical references.<br>Despite a number of human and robotic missions to the Moon, there are still important unanswered questions about its early evolution, and how it came to be the object we observe today. Here we use observational, experimental, and theoretical techniques to examine three important events that took place early in lunar history and have left a lasting signature. The first event is the formation of the largest basin on the Moon, the South Pole
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5

Flocco, Daniela. "The geophysics of Antarctic coastal polynyas." Thesis, University of Cambridge, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.613014.

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6

Morse, David L. "Glacier geophysics at Taylor Dome, Antarctica /." Thesis, Connect to this title online; UW restricted, 1997. http://hdl.handle.net/1773/6801.

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7

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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8

Cox, James. "Baker Wood creosoting site investigation using geophysics /." Connect to resource, 1999. http://hdl.handle.net/1811/28563.

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9

Saunders, Jonathan Howard. "Electrical inversion and characterisation methods in geophysics." Thesis, Imperial College London, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.413721.

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10

Rio, Joao Filipe Meneses Espinheira. "Advances in laboratory geophysics using bender elements." Thesis, University College London (University of London), 2006. http://discovery.ucl.ac.uk/1348997/.

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Bender element transducers are used to determine the small-strain shear stiffness,Go, of soil, by determining the velocity of propagation of mechanical waves through tested samples. They are normally used in the laboratory, on their own or incorporated in geotechnical equipment such as triaxial cells or oedometers. Different excitation signals and interpretation methods are presently applied, each producing different results. The initial assumptions of unbounded wave propagation, generally used in bender element testing and inherited from seismic cross-hole testing, are quite crude and do not
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11

Al-Gezeri, Salem Mohammed. "Modelling of multivariate data in archaeological geophysics." Thesis, University of Leeds, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.427765.

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12

Vichabian, Yervant. "An environment application of self-potential geophysics." Thesis, Massachusetts Institute of Technology, 1997. http://hdl.handle.net/1721.1/46086.

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13

Pierce, Christian William. "Three-dimensional geophysics and visualisation in archaeology." Thesis, University of Cambridge, 2000. https://www.repository.cam.ac.uk/handle/1810/272182.

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14

Schmidt, Armin R. "Visualisation of multi-source archaeological geophysics data." Rome: Fondazione Ing. Carlo M. Lerici, 2002. http://hdl.handle.net/10454/3281.

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15

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

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Electrical resistivity imaging (ERI) and groundwater solute transport modelling are developed for recovery of the hydrogeological architecture of coastal margins. ERI acquisition and processing parameters, along with the influence of hydraulic anisotropy and heterogeneity in karstic aquifers, are explored with examples selected along more than 100 km of coastline proximal to Perth Western Australia. The methods will contribute to accurate predictive groundwater modelling and sustainable management of high-quality coastal aquifers worldwide.
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16

Ortega, Gelabert Olga. "Advanced numerical techniques for inverse problems in geophysics." Doctoral thesis, Universitat Politècnica de Catalunya, 2020. http://hdl.handle.net/10803/670631.

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This thesis presents an efficient methodology to couple Model Order Reduction techniques within the framework of geophysical probabilistic inversion problems. Accurate models of the interaction between Earth inner processes and surface features are essential to make reliable predictions of the observables which are a fundamental part of Bayesian inference. Markov Chain Monte Carlo (MCMC) methods have become standard in dealing with probabilistic inversions and they rely on sampling strategies that require solving forward problems many times. Computationally expensive large-scale forward proble
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17

Shaw, Harold, and Francis A. Lawrence. "AIR FORCE GEOPHYSICS LABORATORY PORTABLE PCM GROUND STATION." International Foundation for Telemetering, 1985. http://hdl.handle.net/10150/615726.

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International Telemetering Conference Proceedings / October 28-31, 1985 / Riviera Hotel, Las Vegas, Nevada<br>In early 1981, the Physical Science Laboratory (PSL) was tasked by the Air Force Geophysics Laboratory (AFGL) to develop a portable Pulse-Code Modulation (PCM) telemetry station that would acquire and support the higher PCM data rates from Ariestype rocket payloads. The station would have to provide real-time and near real-time calibration, prelaunch and launch test support to AFGL researchers involved in space vehicle probe analysis. The station would also have to utilize a flexible s
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18

Abaunza, Víctor Eduardo Martínez. "Performance optimization of geophysics stencils on HPC architectures." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2018. http://hdl.handle.net/10183/183165.

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A simulação de propagação de onda é uma ferramenta crucial na pesquisa de geofísica (para análise eficiente dos terremotos, mitigação de riscos e a exploração de petróleo e gáz). Devido à sua simplicidade e sua eficiência numérica, o método de diferenças finitas é uma das técnicas implementadas para resolver as equações da propagação das ondas. Estas aplicações são conhecidas como estênceis porque consistem num padrão que replica a mesma computação num domínio multidimensional de dados. A Computação de Alto Desempenho é requerida para solucionar este tipo de problemas, como consequência do gra
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19

DIAZ, DE ALBA PATRICIA. "Numerical treatment for inverse problems in applied Geophysics." Doctoral thesis, Università degli Studi di Cagliari, 2017. http://hdl.handle.net/11584/249578.

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This thesis is concerned with numerical methods for inverse problems in applied Geophysics. Its main purpose is to reconstruct the electrical conductivity and the magnetic permeability of the soil by Electromagnetic induction (EMI). By taking measurements at several heights by a Ground Conductivity Meter (GCM), we can gain information about the depth profile of electrical conductivity. Nevertheless, the noninvasive determination of it, using only above-ground electromagnetic induction measurements, remains difficult since it involves inverse problems which typically lead to mathematical models
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20

Francke, Jan C. "The application of geophysics to Nickel Laterite resource evaluation." Thesis, University of Canterbury. Engineering Geology, 2000. http://hdl.handle.net/10092/6417.

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With the dramatic growth of interest in nickel laterite resource exploitation, fueled by increasing demand and new processing technologies, the need for accurate resource delineation and careful mine planning becomes paramount. The traditional use of borehole grids to calculate mineral resources has proven to be neither sufficiently accurate nor cost-effective at many sites due to the complexity of tropical weathering profiles. Although an unconventional approach to laterite mine planning and resource delineation, emerging near-surface geophysical methods, particularly ground penetrating radar
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21

Creveling, Jessica. "Sedimentology, Geochemistry, and Geophysics of the Cambrian Earth System." Thesis, Harvard University, 2012. http://dissertations.umi.com/gsas.harvard:10645.

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Within this dissertation, I document how—and hypothesize why—the quirks and qualities of the Cambrian Period demarcate this interval as fundamentally different from the preceding Proterozoic Eon and succeeding periods of the Phanerozoic Eon. To begin, I focus on the anomalous marine deposition of the mineral apatite. Sedimentary sequestration of phosphorus modulates the capacity for marine primary productivity and, thus, the redox state of the Earth system. Moreover, sedimentary apatite minerals may entomb and replicate skeletal and soft-tissue organisms, creating key aspects of the fossil rec
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22

Grap, Rachel. "Landscape-Scale Geophysics at Tel Shimron, Jezreel Valley, Israel." Digital Commons @ East Tennessee State University, 2017. https://dc.etsu.edu/etd/3295.

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Ground-penetrating radar (GPR) and magnetometry were used at Tel Shimron, an archaeological site in Israel’s Jezreel Valley. GPR primarily measures electric properties while magnetometry measures magnetic properties, making them complementary methods for subsurface prospection. Magnetometry can be collected and processed quickly, making it an ideal landscape-scale reconnaissance tool. It takes more time to collect, process, and interpret GPR data, but the result is a higher resolution dataset. In addition, GPR often works better than magnetometry in desert environments such as the Jezreel Vall
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23

Barrett, Brian Edward. "Water-borne geophysics for Murray River salt-load detection." Title page, contents and abstract only, 2003. http://web4.library.adelaide.edu.au/theses/09SM/09smb2741.pdf.

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Includes bibliographical references (leaves 112-115) Towed DC Resistivity and Transient Electromagnetic arrays have been trialled for suitability in monitoring salt-loads on the Murray River at Waikerie, South Australia.
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24

GHEZZI, ANNALISA. "A new approach to data integration in Archaeological geophysics." Doctoral thesis, Università degli Studi di Camerino, 2020. http://hdl.handle.net/11581/447386.

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25

Magoswana, Simon Luvo. "Systematics of geophytic Othonna (Senecioneae, Othonninae)." University of the Western Cape, 2017. http://hdl.handle.net/11394/5699.

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Magister Scientiae<br>A member of the Senecioneae subtribe Othonninae, Othonna L. is a genus of some 120 species mainly concentrated in the Greater Cape Floristic Region (GCFR) of South Africa, with a few species extending into southern Namibia, Angola and Zimbabwe. The South African species of Othonna were last revised by Harvey in 1865. Consequently many species, particularly in the winter rainfall-region, remain poorly understood. As a start to ultimately producing a complete revision of this priority genus, this study focussed on a group of some 26 tuberous geophytic species. The geophytic
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26

Ewusi, Anthony. "Groundwater exploration and management using Geophysics: northern region of Ghana." [S.l.] : [s.n.], 2006. http://se6.kobv.de:8000/btu/volltexte/2006/37.

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27

Lück, Erika. "Geophysik für den oberflächennahen Bereich (Landwirtschaft, Bodenkunde, Archäologie, Umwelt usw.)." Universität Potsdam, 2006. http://opus.kobv.de/ubp/volltexte/2006/704/.

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28

McNamara, Ken W. "An application of functional analysis to a problem in geophysics /." Title page, contents and summary only, 1992. http://web4.library.adelaide.edu.au/theses/09SM/09smm1695.pdf.

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29

Lewis, Gregory. "The scale invariant generator technique and scaling anisotropy in geophysics /." Thesis, McGill University, 1993. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=68198.

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Recently, there has been a dramatic increase in the use of scale invariance in the study of geophysical fields. However, very little attention has been paid to the anisotropy that is invariably present in these fields, in the form of stratification, differential rotation, texture and morphology. In order to account for scaling anisotropy, the formalism of Generalized Scale Invariance (GSI) was developed. Until now, only a single analysis technique has been developed which incorporates this formalism and which can be used to study the differential rotation of fields.<br>Using a two-dimensional
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30

Vickery, Anna C. "The role of geophysics in the investigation of contaminated land." Thesis, University of Edinburgh, 1999. http://hdl.handle.net/1842/14602.

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After an extensive desk study and a number of trial surveys, electrical and electromagnetic techniques were chosen for the geophysical investigation of 2 ex-oil distribution terminals in West Granton, Edinburgh, which the City of Edinburgh Council aim to acquire for remediation and redevelopment. An electromagnetic survey of the site was conducted, using a Geonics EM31 conductivity meter, as part of a complete assessment of the surface pollution. A 2-D resistivity survey was later employed to image the geology beneath the site with the aim of locating potential contaminant pathways. The EM31 i
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31

da, Costa Filho Carlos Alberto. "Elastodynamic Green's function retrieval : theory and applications in exploration geophysics." Thesis, University of Edinburgh, 2017. http://hdl.handle.net/1842/28760.

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The ability to synthesize recordings from surface data as if they had come from subsurface sources has allowed geophysicists to estimate subsurface properties. Either in the form of classical seismic migration which creates structural maps of the subsurface, to the more recent seismic interferometry which turns seismic sources into receivers and vice-versa, this ability has provided a rich trove of methods with which to probe the Earth's interior. While powerful, both of these techniques suffer from well-known issues. Standard migration requires data without multiply-scattered waves (multiples
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32

Castillo, Reyes Octavio. "Edge-elements formulation of 3D CSEM in geophysics : a parallel approach." Doctoral thesis, Universitat Politècnica de Catalunya, 2017. http://hdl.handle.net/10803/461190.

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Electromagnetic methods (EM) are an invaluable research tool in geophysics whose relevance has increased rapidly in recent years due to its wide industrial adoption. In particular, the forward modelling of three-dimensional marine controlled-source electromagnetics (3D CSEM FM) has become an important technique for reducing ambiguities in the interpretation of geophysical datasets through mapping conductivity variations in the subsurface. As a consequence, the 3D CSEM FM has application in many areas such as hydrocarbon/mineral exploration, reservoir monitoring, CO2 storage characterization, g
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33

Wattanasen, Kamhaeng. "Environmental and hydrogeological geophysics with applications in Thailand, Laos, and Sweden." Doctoral thesis, Luleå : Division of Ore Geology and Applied Geophysics, Department of Chemical Engineering and Geosciences, Luleå University of Technology, 2007. http://epubl.ltu.se/1402-1544/2007/64/.

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34

SILVA, Rodrigo Erasmo da Conceição. "Interfaces gráficas de entrada e saída da eGs (electrical GEOPHYSICS suite)." Universidade Federal do Pará, 2005. http://repositorio.ufpa.br/jspui/handle/2011/5814.

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Submitted by Cleide Dantas (cleidedantas@ufpa.br) on 2014-09-22T13:19:07Z No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Dissertacao_InterfacesGraficasEntrada.pdf: 2071188 bytes, checksum: 57a00616df244bb00fec10e728b8a9a1 (MD5)<br>Approved for entry into archive by Ana Rosa Silva (arosa@ufpa.br) on 2014-09-29T15:15:23Z (GMT) No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Dissertacao_InterfacesGraficasEntrada.pdf: 2071188 bytes, checksum: 57a00616df244bb00fec10e728b8a9a1 (MD5)<br>Made available in DSp
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35

Crooks, Matthew Stuart. "Application of an elasto-plastic continuum model to problems in geophysics." Thesis, University of Manchester, 2014. https://www.research.manchester.ac.uk/portal/en/theses/application-of-an-elastoplastic-continuum-model-to-problems-in-geophysics(56bc2269-3eb2-47f9-8482-b62e8e053b76).html.

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A model for stress and strain accumulation in strike slip earthquake faults is presented in which a finite width cuboidal fault region is embedded between two cuboidal tectonic plates. Elasto-plastic continuum constitutive equations model the gouge in the fault and the tectonic plates are linear elastic solids obeying the generalised Hooke's law. The model predicts a velocity field which is comparable to surface deformations. The plastic behaviour of the fault material allows the velocities in the tectonic plate to increase to values which are independent of the distance from the fault. Both o
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36

Forman, Katherine Crawford. "Baseline geophysics over North Silver Bell ore deposit, Pima County, Arizona." Thesis, The University of Arizona, 1994. http://hdl.handle.net/10150/558234.

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37

Rappsilber, Ivo. "Struktur und Entwicklung des nördlichen Saale-Beckens (Sachsen-Anhalt) Geophysik und Geologie /." [S.l. : s.n.], 2003. http://deposit.ddb.de/cgi-bin/dokserv?idn=969332246.

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38

Diouane, Youssef. "Globally convergent evolution strategies with application to Earth imaging problem in geophysics." Phd thesis, Toulouse, INPT, 2014. http://oatao.univ-toulouse.fr/12202/1/Diouane.pdf.

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In recent years, there has been significant and growing interest in Derivative-Free Optimization (DFO). This field can be divided into two categories: deterministic and stochastic. Despite addressing the same problem domain, only few interactions between the two DFO categories were established in the existing literature. In this thesis, we attempt to bridge this gap by showing how ideas from deterministic DFO can improve the efficiency and the rigorousness of one of the most successful class of stochastic algorithms, known as Evolution Strategies (ES’s). We propose to equip a class of ES’s wit
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39

Tsang, Wing-shing, and 曾永成. "Borehole geophysics limitations of natural gamma and gamma-gamma density logging methods." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2003. http://hub.hku.hk/bib/B42577238.

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40

Örn, Henrik. "Accuracy and precision of bedrock sur-face prediction using geophysics and geostatistics." Thesis, KTH, Mark- och vattenteknik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-171859.

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In underground construction and foundation engineering uncertainties associated with subsurface properties are inevitable to deal with. Site investigations are expensive to perform, but a limited understanding of the subsurface may result in major problems; which often lead to an unexpected increase in the overall cost of the construction project. This study aims to optimize the pre-investigation program to get as much correct information out from a limited input of resources, thus making it as cost effective as possible. To optimize site investigation using soil-rock sounding three different
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41

Gordon, M. Anne. "Applications of field seismic geophysics to the measurement of geotechnical stiffness parameters." Thesis, University of Surrey, 1997. http://epubs.surrey.ac.uk/862/.

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42

Gregorius, Thierry Lucien Herve. "GPS, the troposphere and weather fronts : new departments for geophysics and meteorology." Thesis, University of Newcastle Upon Tyne, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.388652.

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43

Tsang, Wing-shing. "Borehole geophysics limitations of natural gamma and gamma-gamma density logging methods." Click to view the E-thesis via HKUTO, 2003. http://sunzi.lib.hku.hk/hkuto/record/B42577238.

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44

Dick, Henry C. "The detection of forensic and archaeological burials using geophysics and soil analysis." Thesis, Keele University, 2017. http://eprints.keele.ac.uk/4361/.

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Graveyards and cemeteries around the world are increasingly being designated as full. There is growing requirements to identify burial space or to exhume and re-inter if necessary. Near-surface geophysical methods offer a potentially non-invasive target detection solution, with additional soil sampling analysis to provide ground truth information; however there has been lack of research to identify optimal detection methods. This study has collected multi-frequency (225 MHz – 900 MHz) ground penetrating radar, electrical resistivity, electromagnetic induction and magnetic susceptibility surfac
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45

Henken-Mellies, Wolf Ulrich. "¹°Be in marinen Sedimenten : Anwendungen in der Geophysik und in der Paläo-Ozeanographie /." Zürich, 1990. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=9191.

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46

Wilkes, Paul Graeme. "Geophysics in the Search for Diamonds in the Kimberley Region of Western Australia." Thesis, Curtin University, 2013. http://hdl.handle.net/20.500.11937/1438.

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This thesis explores new ways of using airborne and ground geophysical methods for diamond exploration in the Kimberley region of Western Australia. Four test areas were used to compare geophysical results with known kimberlite and diamond occurences. The thesis includes a review of diamond exploration models and geophysical methods used worldwide over the last 50 years. It shows how geophysics can provide exploration guidelines and strategies for improved exploration.
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47

Shi, Bin. "Multiscale Statistical Analysis of Self-Similar Processes with Applications in Geophysics and Health Informatics." Diss., Georgia Institute of Technology, 2005. http://hdl.handle.net/1853/6887.

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In this dissertation, we address the statistical analysis under the multiscale framework for the self-similar process. Motivated by the problems arising from geophysics and health informatics, we develop a set of statistical measures as discriminative summaries of the self-similar process. These measures include Multiscale Schur Monotone (MSM) measures, Geometric Attributes of Multifractal Spectrum (GAMFS), Quasi-Hurst exponents, Mallat Model and Tsallis Maxent Model. These measures are used as methods to quantify the difference (or similarities) or as input (feature) vectors in the classif
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48

Bohannon, Stacy Jo. "Hydrogeology of the San Xavier Mining Laboratory and Geophysics Test Site and surrounding area." FIND on the Web, 1991.

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49

Said, Dhiya Mustafa Mohamed. "Reservoir geophysics of the Clyde field : the development and application of quantitative analysis techniques." Thesis, University of Aberdeen, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.327396.

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50

Bohannon, Stacy Jo 1965. "Hydrogeology of the San Xavier Mining Laboratory and Geophysics Test Site and surrounding area." Thesis, The University of Arizona, 1991. http://hdl.handle.net/10150/192053.

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Water level, permeability, and water quality data indicate that the aquifer beneath the San Xavier Mining Laboratory is unconfined, high permeability, and isolated from the adjacent, upgradient aquifer. The aquifer at San Xavier has been dewatered considerably due to past pumping at the mine and at nearby open-pit mines. Water levels have not recovered due to the low permeability of the upgradient aquifer, and the restriction of the flow of ground water across the thrust fault separating the upgradient and San Xavier aquifers. The Mining Laboratory is in full compliance with the Aquifer Protec
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