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.
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Showing 1 to 20 of 85 for “"field mapping"”.
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Enhanced Navigation Using Aerial Magnetic Field Mapping
… the methods of previous work in aerial magnetic field mapping and use in state estimation to the Virginia Tech Swing Space motion capture indoor facility. State estimation with magnetic field data acquired from a quadrotor is comparatively performed with Gaussian process regression, a …
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The multifocal visual evoked cortical potential in visual field mapping: a methodological study.
… potential permits objective electrophysiological mapping of the visual field. The multifocal visual evoked cortical potential (mfVECP) presents several technical challenges. Signals are small, are influenced by a number of sources of noise and waveforms vary both across the visual field and …
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Petrography and Field Mapping of Eocene Intrusions and Adjacent Breccia Zones at the Scraper Springs Prospect, Elko County, Nevada
… the diorite intrusion. The present study employs field mapping techniques to document the geology and alteration of the diorite intrusion and adjacent silicified/advanced argillic lithocap breccias. Petrography and sodium-cobaltinitrite staining supplement field observations to aid in …
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Structural Geology of The Brady Mountain Area, Ouachita Mountains, Arkansas: Integrating Field Mapping, Geospatial Techniques, Photogrammetry And 3D Modeling For Structural Analysis
… for detailed analysis of select outcrops so that field time can be optimized and, additionally, provide a more immersive data product from this project. Finally, MOVE software will be used to create a 3D model of the map area, allowing comprehensive spatial visualization and analysis of structural …
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Landscape scale measurements of wind erosion of volcanic materials in the Hekla area
… or sparsely vegetated land, with sandy lava fields and sand and pumice fields dominating the surface. Wind erosion was studied for two summers, 2008-2009, on a landscape scale, by measuring the actual aeolian sand transport during erosion events with dust traps at 32 locations. Electronic …
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Geophysical Characterisation and Evolutionary Model of the Quaternary sediments in the North Offaly region of Central Ireland
Data from field mapping of 133 exposures, 57 boreholes and 190 petrographic and particle size analysis samples were used to produce Quaternary geological and depth to bedrock maps for the 600 Km² research area located in the North Offaly region of central Ireland. Based on the mapping, the area was …
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Multi-ISFET sensor system for soil analysis
… application, to local conditions within the field. The implementation of spatially selective field operations is dependent on field mapping of the variations in soil and crop parameters. The development of soil nutrient sensors may both improve the accuracy of soil nutrient maps and decrease …
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Measuring Characteristic Shrinkage Variability Due to Metal Loading Effects in Low Temperature Co-Fired Ceramic Using Image Processing
… characterization method called shrinkage field mapping. Due to the increased measurements needed for shrinkage field mapping, image processing is used to extract dimensions without dramatically increasing measurement time for the High-Density Electronics Center LTCC process. With the …
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Stratigraphy and deposition of the Price Formation coals in Montgomery and Pulaski Counties, Virginia
The conclusion of this investigation, based on field mapping and measured sections, is the Price Formation was deposited on a high-energy shoreline. Sediments for the shoreline were initially transported from a northern deltaic source. The Cloyd Conglomerate Member represents offshore barrier bars, …
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Geology and characterization of coal at the Mushithe Coal Occurrence, Soutpansberg Coalfield, Limpopo Province, South Africa
… sub-basin of the Soutpansberg coalfield in South Africa. The Soutpansberg Coalfield has received comparatively less attention compared to other more notable South African coalfields. There is as a consequence very limited information in the public domain applicable to the geology as …
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Geology and petrogenesis of the Tuscarora Intrusion of the Duluth Complex, Gillis Lake 7.5’ quadrangle, northeastern Minnesota
… Complex in northeastern Minnesota. Detailed field mapping (1:12,000) and follow-up petrographic and geochemical analyses were conducted to evaluate the troctolitic igneous stratigraphy of the Tuscarora Intrusion, as well as to understand the petrologic relationship between the troctolitic …
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Structural Geology of the Caddo Gap Area, Ouachita Mountains, Arkansas
… orogenic core of the Ouachita Mountains. Recent field mapping focused on delineating stratigraphic and structural relationships in the southern part of the quadrangle to improve existing reconnaissance-scale maps of the area. New structures were discovered that provide further information about …
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Characterization of Structures and Deformation in the Brittle-Ductile Transition, Western Termination of the Chugach Metamorphic Complex, Southern Alaska
Field mapping along the western termination of the Chugach Metamorphic Complex (CMC) revealed a new D2 structure, the Bremner foliation fan. This structure has a high strain, vertically foliated core, with moderate-shallow dipping cleavages to the north and south which rollover into the core. The …
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3D Geologic Mapping and Characterization Using Digital Outcrop Models Generated from Uninhabited Aerial Vehicles and Structure-from-Motion Photogrammetry
… observations across various scales. Conventional field mapping techniques have remained largely unchanged for the past two centuries and are commonly limited in their ability to quantitatively constrain measurements, extend observations laterally, and document features at multiple scales. …
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A thermotectonic framework for the growth and stabilization of the eastern Kaapvaal craton, southern Africa
… of this portion of Mesoarchean lithosphere. Field mapping was focused on terrane-bounding shear zones and syntectonic plutons, and in combination with ID-TIMS U-Pb zircon geochronology and Sm-Nd analysis, places sub-Myr constraints on the timing, distribution, and kinematics of magmatism and …
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Late quaternary valley fill sediments in the River Tyne valley: Understanding late Devensian deglaciation and early postglacial response in northern England
… (OSL), and broad-scale geomorphological mapping using traditional field mapping and appropriately scaled digital elevation models fromNEXTMap Britain.The thesis contributes new detailed sedimentological and morphological data, and has re-evaluated existing data sets and interpretations. A …
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Geologic Face Mapping Methodology Utilizing Global Positioning Systems and Unmanned Aircraft Systems
<p>Geologic field mapping has traditionally been a low-technology process, limited by time in the field and a delicate balance between data collection and coverage area. Advancements in Global Positioning Systems (GPS), Unmanned Aircraft Systems (UAS), and software packages offer new tools and …
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The social production of community garden space: Case studies of Boston, Massachusetts and Havana, Cuba
… demographic analysis, interviews, surveys, field mapping, photo documentation and direct observation. The hope is that this research will bring to light certain policies and actions that will help ensure access to community garden space by diverse individuals. The following describes the …
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Statistical field estimation and scale estimation for complex coastal regions and archipelagos
… dynamics is the optimal estimation of gridded fields and of spatial-temporal scales directly from the spatially irregular and multivariate data sets that are collected by varied instruments and sampling schemes. In this work, we derive and utilize new schemes for the mapping and dynamical …
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Late Cenozoic extension in Limni Basin in northern Evia, Greece
… zone. In particular, this study is aimed at mapping and, eventually, dating sediments and related normal faults in the Limni-Istiea basin of northern Evia. Field mapping in the southern portion of this basin reveals eight sedimentary units and suggests several periods during which steep …
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