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 8 of 8 for “"Geophysical surveying"”.
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Optimization of UAV-borne Aeromagnetic Surveying in Mineral Exploration
… aeromagnetic systems as a trusted and viable geophysical surveying technique. Therefore, this research is aimed at describing and bringing to the forefront some of the key issues that affect the achievable resolution and quality of UAV-borne aeromagnetic data, as well as outlining practical …
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Spatial association in archaeology. Development of statistical methodologies and computer techniques for spatial association of surface, lattice and point processes, applied to prehistoric evidence in North Yorkshire and to the Heslerton Romano-British site.
… site and regional data sets. The techniques of geophysical surveying, surface distribution collection and aerial photography are described and discussed. Several new developments of technique are presented as well as a detailed discussion of the problems of data presentation and analysis. The …
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Use of the self-potential method for measurement of subsurface water flow at a pump-and-treat remediation site
The self-potential method (SP) of geophysical surveying has been widely used in environmental and engineering applications, primarily for rough but inexpensive assessment of subsurface flow of fluids, heat, or ions. In this project, the SP method was employed to study the activity at an …
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LiDAR-Based Analysis of Antebellum-Era Sugar Mill Remains in Brazoria County, Texas: Investigations from Above and Below
… Site has undergone extensive excavations and geophysical survey. Despite these efforts, some anticipated features remain undiscovered on the plantation. This research aims to assess the efficacy of LiDAR-derived digital elevation models in identifying historical surficial features, effectively …
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Hydrogeologic Controls on Lake Level at Mountain Lake, Virginia
… lakes in Virginia. A daily water balance, geophysical surveying with dipole-dipole electrical resistivity, and chemical sampling have shed light on the nature of flow to and from the lake, including: 1) the steady nature of net groundwater outflow, 2) the seasonal response to precipitation …
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A geomagnetic survey of parts of Pierce, Benson, Sheridan and Wells counties
… may serve as a cheek on the other types of geophysical surveying.</p> <p>The two large magnetic highs may be more areas in the basement rocks, and they may indicate structure. However, the large eastward-trending magnetic high area on the west side of the map area is quite possibly due to a …
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Improving Deep Exploration with Cost-Effective Geophysical Methods
… in a cost-effective manner. First, by combining geophysical, borehole, and open-source spatial data, a 3D model was synthesized for a volcanogenic massive sulphide (VMS) deposit located in Nash Creek, NB. Evaluating this model showed a need for structural controls to better understand the genesis …
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Class III / short line system inventory to determine 286,000 lb (129,844 kg) railcar operational status in Kansas and determination of ballast fouling using ground penetrating radar
… Penetrating Radar (GPR) is a nondestructive geophysical surveying method that measures the time required for electromagnetic wave impulses to reflect off differing subsurface interfaces. Historically, GPR surveys of track structures primarily determine the depth of ballast and track geometry. …