Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 48 for “"Magnetic data"”.
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Interpratation of gravity and magnetic data from the northern Appalachian Basin
Includes bibliographical references (pages 114-122).
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Structural Controls of the MacFarlane Geothermal System, Humboldt County, Nevada: New Insights Based on Detailed Geologic Mapping, Shallow Temperature Surveys, and Magnetic Data
Detailed geologic mapping, structural analysis, magnetic and two-meter temperature data, integrated with previous datasets, constrain the structural controls of the MacFarlane geothermal system. MacFarlane hot springs and the travertine fissure ridges lie within a relay ramp. The relay ramp is …
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The use of fractal dimension for texture-based enhancement of aeromagnetic data.
… dimension (FD) as a tool for enhancing airborne magnetic data. More specifically, this thesis investigates the potential of FD-based texture transform images as tools for aiding in the interpretation of airborne magnetic data. A series of different methods of estimating FD are investigated, …
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Effects of anisotropic magnetic susceptibility in data interpretation and its potential in application
Anisotropic magnetic susceptibility (AMS) contains information about the internal structure of magnetic geologic units and may have the potential to provide information about the formation history and subsequent geologic processes to which these units were subjected. Its application in the …
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Ferromagnetic manganites: spin-polarized conduction and competing interactions
… technology, one may think of microelectronics, magnetic data storage, communication technologies and others. Sometimes, it seems possible to postpone the step of fundamental understanding when starting the application of a new material. However, lasting success and discovery of principally new …
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Geographic information system (GIS) integration of geological, geochemical and geophysical data from the Aggeneys base metal province, South Africa
… processing, analysis and presentation of spatial data sets. GIS can effectively interrogate large multidisciplinary exploration data sets in the search for new mineral exploitation targets. A spatial database, the AGGeneys Exploration Database (AGGED), has been created, comprising exploration data …
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A geological and geophysical study of the Tendaho Graben in the Afar Depression, Ethiopia: insights into transitional continental rifting
"A detailed magnetic and gravity study across the Tendaho Graben (the Red Sea propagator within the Afar Depression, Ethiopia) revealed features that can best be interpreted as a continental rift undergoing oceanization. This NW-trending extensional structure is ~50 km wide and it is confined …
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Integrated, Basin-To-Reservoir Scale, Geologic and Geophysical Studies of a Carbonate-Hosted, Hydrocarbon Reservoir of the La Vela Basin, Northwestern Venezuela
… South America. I use regional gravity and magnetic data integrated with a basin-scale database of 1100 km2 of 3D seismic data and 52 wells from the Venezuelan national oil company (PDVSA) to assess carbonate reservoirs of the La Vela Basin (LVB). The LVB produced small quantities of oil and …
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Crustal, Thermal, and Structural Controls on Hydrocarbon Systems in the Delaware Basin, West Texas, and Southeastern New Mexico
… Basin based on the interpretation of gravity and magnetic data, 3D seismic, and well data. Initial ambiguity of petroleum systems modeling results led to the discovery of unconstrained thermal and tectonic parameters within the Delaware Basin. Each chapter in this study contributes new constraints …
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Synthesis, X-ray characterization, structural and magnetic studies of a new class of iso-structural BiMO₃ compounds
… BCC structure. In part three, the results of the magnetic studies on BiCoO₃ and biAl.₉FE.₁ are presented. The magnetic data for BiCoO₃ are substantiated by X-ray thermal expansion studies. In the last part the compound BiCo.₉FE.₁O₃ is examined in some detail. The magnetic studies are substantiated …
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NONLINEAR SPIN DYNAMICS AND ULTRA-FAST PRECESSIONAL SWITCHING
… technological applications in the area of magnetic data storage, as well as by pure scientific quest for ultra-fast spin dynamics in nanostructures. The present paradigm of magnetic data storage is approaching its fundamental limits for areal storage density, as well as for speed in data …
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Modifying the magnetic properties of Laves phase intermetallic multilayers and films by nano-patterning and ion implantation
… springs, systems where thin hard and soft magnetic layers are alternately arranged in multilayer stacks, provide great potential in improving the performance of a wide range of devices, from permanent hard magnets and microelectromechanical sensors and actuators, to magnetoresistive random …
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Fabrication and characterization of nanostructured magnetic particles for applications in data storage
Arrays of nanostructured magnetic particles ('nanomagnets') have potential applications in ultra-high-density data storage devices and dynamic magnetic memories, and are model systems for the study of magnetic phenomena at deep sub-micron length scales. We use interference lithography to pattern …
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A patterning process utilizing a nanoimprint lithography for fabrication of planar perpendicular patterned magnetic media
… of applied research in the area of patterned magnetic media. Current magnetic media is pushing the physical limits of magnetic bits by compressing them into very small spaces - a process that will eventually be hampered by the superparamagnetic effect. The superparamagnetic effect will require …
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Study of Modulation and Error Control Coding in Thick Film Digital Magnetic Recording
… and Error Correction codes to Digitally Recorded Magnetic Data.<br/><br/>The effects of these coding schemes were measured against bitshift errors which are induced by different Non Clockloss Error Mechanisms. These Error mechanisms are Noise and Inter Symbol Interference, ISI. The Thesis has an …
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Spatiotemporal Slip Rate Variations Along Surprise Valley Fault in Relation to Pleistocene Pluvial Lakes
… features with high-resolution topographic data and obtained radiocarbon dates on paleoshoreline tufas, I documented precise fault offsets of dated features over the last 25 ka along the Surprise Valley Fault (SVF). Fault offset measured in three lake sections within Surprise Valley ranged …
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Structural Interpretation of an Alkaline-Carbonatite Complex Using Gravity and Magnetic Methods at Magnet Cove, Arkansas
… high-resolution ground-based gravity and magnetic data, we present a range of detailed two-dimensional and three-dimensional geophysical models of the Magnet Cove complex. The models reveal that the intrusion could reach a lateral subsurface extent of ~25 km at ~10 km depth, extend to a …
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Improving the Interpretation of Magnetic Tensor Data Using Deep Learning
The accurate interpretation of magnetic tensor data can be difficult to perform without a strong knowledge of local geology and experience in reading magnetic data. I examined ways in which machine learning techniques can be applied to magnetic tensor data to automatically locate possible …
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Airborne geophysical investigations of subglacial structure of West Antarctica
… simultaneous Radio Echo Sounding (RES) and magnetics was carried out over -1 M km$^{2}$ of the ice covered area. The collection and reduction of large volumes of RES and magnetic data are described. The first detailed maps of ice sheet surface and bedrock topography were compiled from the …
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