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Showing 1 to 16 of 16 for “"Geohazards"”.
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GIS Modeling of the Prominent Geohazards in Arkansas
<p>The State of Arkansas is prone to numerous geohazards. This thesis is a twofold study of prominent geohazards in Arkansas: the first fold includes a novel triggerless approach for mass wasting susceptibility modeling applied to the Boston Mountains in NW Arkansas, and the second fold is a …
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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 …
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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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CHARACTERIZATION AND DELINEATION OF POTENTIAL EVAPORITE GEOHAZARDS USING ELECTRICAL RESISTIVITY METHODS ALONG FM 2185, CULBERSON COUNTY, TEXAS
… and Rustler strata that host gypsum karst geohazards. Land reconnaissance surveys conducted during the summer of 2019 documented numerous surficial manifestations of karst features proximal to Farm to Market Road 2185 (FM 2185). In combination with traditional survey techniques, electrical …
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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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Speleogenesis and Delineation of Megaporosity and Karst Geohazards Through Geologic Cave Mapping and LiDAR Analyses Associated with Infrastructure in Culberson County, Texas
<p>The Gypsum Plain region of the Delaware Basin hosts approximately 1800 km<sup>2</sup> of the Castile Formation outcrop. A myriad of karstic developments from closed sinkholes to large multi-kilometer cave systems have been documented within the region. Karst studies on the distribution and …
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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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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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New technologies for unconventional reservoir characterization: Seismic inversion, focal-time estimation, and signal processing to improve reservoir imaging
… optimize reservoir development and to mitigate geohazards such as induced seismicity. Frequently, hydraulic fracture stimulation programs do not go as planned; fractures occur out of zone, depart from the predicted models, and, in some cases, induce felt seismic events (induced by hydraulic …
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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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Mapping and Kinematic Structural Analysis of the Deep Creek Fault Zone, South Flank of the Uinta Mountains, Near Vernal, Utah
… with stratigraphy, structural geology, and geohazards are currently being addressed as a result of this and other mapping projects in the vicinity. The geologic units in the area range in age from Mississippian to Late Cretaceous and include Uinta-sourced Tertiary units. Brief unit …
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Post-Wildfire Debris Flow Susceptibility and Preconditioning Factors in the Central Okanagan
Debris flows are a common hazard in British Columbia, but studies on their occurrence in the temperate continental regions of the province are primarily limited to anthropogenic and specific large events. We document 197 debris flows in and around the Regional District of Central Okanagan and the …
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Soil burn severity and climatic analysis of post-wildfire soil hydraulic properties from across the western continental United States
Rainfall infiltration into soil is a key factor in both landscape development and generation of rainfall-runoff hazards like flash flooding and debris flows in recently burned areas. However, infiltration capacity is spatially and temporally variable, which makes its prediction challenging, …
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MIDDLE SCHOOL STUDENTS' EARTHQUAKE CONTENT AND PREPAREDNESS KNOWLEDGE - A MIXED METHOD STUDY
The purpose of this study was to assess the effect of earthquake instruction on students' earthquake content and preparedness for earthquakes. This study used an innovative direct instruction on earthquake science content and concepts with an inquiry-based group activity on earthquake safety …
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The Impacts of Climate and Landscape Change on Catchment Scale Material Transport in High Mountain and Seasonally Cold Regions
… and could be connected to an increased risk in geohazards such as landslides. In Argentina, however, where the Andes act as an orographic barrier to winter storm events originating from the Pacific, the streamflow and sediment flux response to warming was more akin to simulations with reduced …