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 19 of 19 for “"Geohazard"”.
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Topographic and material controls on the Scottish debris flow geohazard
… times in recent years. The potency of this geohazard is anticipated to increase over the coming decades due to a climatologically enforced upturn in debris flow frequency. In thisresearch material and topographic controls on debris flow activity are investigated using a combination of field …
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Tuzla City (BiH): an example of geohazard induced by salt extraction
… Tuzla subsidence phenomenon can be defined as geohazard, which represents the consequence of an adverse combination of geological processes and ground conditions precipitated by human activity with the potential to cause harm (Rosenbaum and Culshaw, 2003). Where an hazard induces a risk to a …
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GEOPHYSICAL DELINEATION OF MEGAPOROSITY AND FLUID MIGRATION PATHWAYS FOR GEOHAZARD CHARACTERIZATION WITHIN THE DELAWARE BASIN, CULBERSON COUNTY, TEXAS
… of Castile and Rustler strata that host karst geohazards. Regions of karst geohazard potential have been physically surveyed proximal to the study area in evaporites throughout the Castile Formation outcrop; minimal hazards, in comparison to the Castile Formation, have been documented in the …
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CHARACTERIZATION AND DELINEATION OF POTENTIAL EVAPORITE GEOHAZARDS USING ELECTRICAL RESISTIVITY METHODS ALONG FM 2185, CULBERSON COUNTY, TEXAS
… and southeastern New Mexico poses a significant geohazard threat to infrastructure. Dissolution of regional evaporite strata have led to manifestations of karst geohazard phenomena including sinkholes, subsidence features, and caves. The study area is located within the Gypsum Plain in Culberson …
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Delineation of Karst Geohazards along RM 652 Through the Use of Ground Penetrating Radar: Culberson County, Texas
… Delaware Basin hosts significant evaporite karst geohazards throughout the Gypsum Plain of the Castile Formation, where geohazards of all scales form beneath and immediately adjacent to major infrastructure throughout the region, especially Ranch-to-Market 652, including geohazards ranging from …
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The sedimentary record of seafloor uplift
… paleoclimate archives, and poses significant geohazard risks. This thesis investigates the different origins, evolution, and impacts of various uplifting mechanisms on deep-water sedimentary records based on the interpretation of geomorphological and geophysical data. Here, sedimentary and …
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New technologies for unconventional reservoir characterization: Seismic inversion, focal-time estimation, and signal processing to improve reservoir imaging
… have long been used for resource evaluation and geohazard assessments. Unconventional resource extraction, such as Alberta’s Duvernay play, requires a multifaceted approach to optimize reservoir development and to mitigate geohazards such as induced seismicity. Frequently, hydraulic fracture …
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Investigation of Surface Instability Processes in Burned Areas through Remote Sensing and Field Surveys
… dynamics, offering predictive approaches for geohazard management and future research into fire-driven landscape evolution.
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Multibeam echosounding as a tool for mapping geologic features, bathymetry and modern vents, Yellowstone National Park, Wyoming
… but also aid in geologic mapping as well as geohazard evaluation in subaqueous hydrothermal environments.
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Landslide-pipeline interaction for onshore slopes in silty sand
… soil forces created by landslides, among other geohazards. The quantification of soil forces on buried pipe, termed strain demand, can take the form of a simplified Winkler-beam style interaction, more commonly called soil-springs. Despite this simplified concept compared to more numerically …
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An Assessment of Rockfall Triggers and Seasonal Weather Trends Through An Examination of Railway Slope Management Procedures
Rockfalls are one of the many geohazards that impact railways across Canada with the potential to cause operational delays, damage to infrastructure and the environment, and injury or loss of life. To minimize the risk associated with these scenarios, railways rely on slope management systems that …
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Structure, Stratigraphy and Hydrocarbon Potential of the Colombian Caribbean Margin and Tsunamigenic Hazards in the Western Caribbean and the South China Sea
… potential of an incipient slope failure and the geohazard potential of large-scale mass wasting along this margin. In Chapter 4, I map a 450 km long segment of the South Caribbean Deformed Belt offshore the Guajira Peninsula. The mapping reveals the subducting Caribbean Plate dipping beneath the …
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A novel approach by integrating physically and Machine leaning-based models for landslide susceptibility assessment
… trust among the decision-makers while making geohazard predictions.
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The influence of the Critical Zone on hillslope hydrology and stability
… tools for hydrological forecasting and geohazard mitigation, this dissertation emphasizes the importance of explicitly representing CZ heterogeneity in physically-based hydrological analyses.
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Methane Gas Hydrate Morphology and its Effect on the Stiffness and Damping of some Sediments
… as a potential energy resource or natural geohazard. Current seismic methods, used to<br/>identify and quantify gas hydrates, have proved to be unreliable in providing accurate information on<br/>the extent of natural gas hydrate deposits, due to the lack of understanding on how gas hydrate …
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InSAR time series analysis and machine learning for ground subsidence monitoring and susceptibility mapping in Midvaal, South Africa
… region but also holds potential for broader geohazard applications. Future research should explore the integration of multi-sensor data, real-time environmental monitoring, and further model refinement to improve performance in complex terrain.
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Remote Sensing Big Data and Physical Models for Resilience to Geohazards in the Water-Energy Nexus
The interaction of natural and anthropogenic factors rapidly transforms Earth's geophysical systems, posing significant risks to critical infrastructure, ecosystems, and communities. My dissertation tackles two central challenges in geosciences: the climate-driven alterations in geosystems within …
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Geomorfologia del Margine Continentale della Sardegna meridionale
The study submitted in this thesis is related to the continental margin of southern Sardinia, including the continental platform and the upper portion of the continental slope to a depth of about 2000 meters, is included within the Gulf of Cagliari, limited to the west by Capo Teulada and on the …
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Characterization and Delineation of Karst Geohazards Along RM652 Using Electrical Resistivity Tomography, Culberson County, Texas
<p>The Delaware Basin of West Texas and southeastern New Mexico is the major western subdivision of the Permian Basin and a northern extension of the Chihuahuan Desert. The major evaporite unit within the Delaware Basin is the Castile Formation, which consists of gypsum/anhydrite and is highly …