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 33 for “"seismic hazards"”.
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Improvements to the Assessment of Site-Specific Seismic Hazards
… is crucial for improving the assessment of seismic hazards. Site response analyses (SRA) can numerically accommodate the mechanics behind the wave propagation phenomena near the surface as well as the variability associated with the input motion and soil properties. As a result, SRA …
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Assessment of Seismic Hazards along the Northern Gulf of Aqaba
… engineering studies will help to assess the seismic hazards by determining the location and slip potential of active faults and by mapping areas of high liquefaction susceptibility. Ground Penetrating Radar (GPR) as a high resolution shallow geophysical tool was used to map the shallow active …
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Geospatial Analyses of Seismic Hazards and Risk Perception in Libya
<p>Libya is not considered a highly active seismic region. However, several earthquakes of magnitude >5.0 have occurred there. This dissertation analyzes the seismicity of Libya in order to better understand earthquake hazards, related geomorphic features, and the current evolution of Libyan …
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Evaluating Late Pleistocene and Holocene Rupture, Seismic Hazards and Ground Motion in the Lake Tahoe Basin
… Detection and Ranging) imagery, high-resolution seismic CHIRP profiles, multibeam bathymetric mapping, and field mapping. The combined lateral and vertical resolution has allowed a straight forward identification of the landward extension of fault scarps associated with the three major active …
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Column Capacity Evaluation For Low-Rise Moment Frame Steel Buildings In Mississippi Subject To Wind And Seismic Hazards
… a range of relative importance for these two hazards. For a three-story moment resisting frame building, second-order effects were developed for each column using the Amplified First Order Analysis Method. Interaction ratios were then used as the basis for establishing capacity of each column …
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A Comprehensive Analysis of Station Performance for the Nevada Seismological Laboratory Network
Earthquake hazards in Nevada are comparable to much of California, making instrumental studies of earthquakes in densely populated regions crucial for hazard mitigation and response. The Nevada Seismological Laboratory (NSL)is responsible for monitoring seismic activity in this area, and over time …
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Forecasting earthquake losses in port systems
… infrastructure, but are vulnerable to seismic hazards. Downtime and reduced throughput from seismic damage in ports results in significant business interruption losses for port stakeholders. Current risk management practices only focus on the effect of seismic hazards on individual port …
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Refraction Microtremor Analysis of Areas Surrounding California State University San Bernardino
… to site amplification of ground motion caused by seismic activity via wave propagation through the subsurface. These seismic hazards are being addressed via the Alquist-Priolo Earthquake Faulting Zone Act and the National Earthquake Hazards Reduction Program (NEHRP). Shear wave velocity of the …
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Seismic Analysis and Assessment of Historic Unreinforced Masonry Structures
… which include heritage construction to seismic hazards.
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Remote Sensing Big Data and Physical Models for Resilience to Geohazards in the Water-Energy Nexus
… nexus and the dynamics of human-induced seismicity. By integrating satellite-based remote sensing, and physics-based models, my work offers new insights into these interconnected phenomena. It introduces innovative forecasting methodologies to mitigate their impacts. Thus, this …
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Quantifying coseismic land-level change along the Cascadia subduction zone in central Oregon
… assessing rupture dynamics and predicting future seismic hazards. Estimates of the magnitude of coseismic subsidence produced by these great (>M 8.5) earthquakes provide critical constraints for rupture and hazard models. Coastal subsidence from these earthquakes is preserved in tidal wetland …
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THE SEDIMENT AND CRUSTAL STRUCTURE OF THE SOUTHEASTERN UNITED STATES
… It has long been suspected that the current seismicity in the SEUS is related to zones of weakness inherited from past structural boundaries; however, the mechanisms that dictate the size and location remain poorly understood and the ground shaking hazard posed by widespread sedimentary …
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Energy Budget Analysis of Slow-Slip Tremor Events Along the Cascadia Subduction Zone Using Continuous GPS Array Data
<p>Seismic hazards poised to cities by subduction zones are strongly controlled by fault slip along the deeper extent of the two plate interaction closest to population densities. In Cascadia, where Mw=9 size events are known to occur from a variety of sources, modeling of leveling data has …
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Empirical analysis of masonry walls : structural design and seismic reinforcement through tilting experiments
… many of these structures lie within highly seismic regions. As a result, guidelines have been established to ensure structural integrity in case of a disaster, yet these are based on assumptions that limit the accuracy of these tools, and fail to address the needs of traditional …
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Nonlinear Cyclic Truss Model for Beam-Column Joints of Non-ductile RC Frames
… portion of the built environment in areas with seismic hazards. The beam-to-column joints of these frames are key components that have a significant impact on the structure's behavior. Modern detailing provides sufficient strength within these joints to transfer the forces between the beams and …
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Novel Multitemporal Synthetic Aperture Radar Interferometry Algorithms and Models Applied on Managed Aquifer Recharge and Fault Creep
… time series from 2015-2021. These SSEs govern aseismic slip dynamics, manifesting as avalanche-like creep rate variations. The study further investigates Managed Aquifer Recharge (MAR) as a nature-engineering-based solution in the Santa Ana Basin. Analyzing surface deformation from 2004 to 2022 …
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Optimizing resilience : performance based assessment of retrofits for wood-frame housing in San Francisco
Prevalent seismic hazards in the San Francisco Bay Area region require the building stock to be able to withstand frequent ground accelerations while maintaining life-safety standards. Most housing in the City of San Francisco is more than a century old and unable to comply with the increasingly …
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Seismic Displacement Demands on Self-Centering Single-Degree-of-Freedom Systems
Most conventional seismic design intends for key structural members to yield in order to limit seismic forces, leading to structural damage after a major earthquake. To minimize this structural damage, self-centering systems are being developed. But how to estimate the peak seismic displacement of …
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Response modification factor of reinforced concrete moment resisting frames in developing countries
Vulnerability of buildings to seismic hazards is more drastic in developing countries with high seismicity, as compared to developed countries. This is primarily attributed to the lack of seismic design guidelines, which fit the type of structural systems and practices that are often applied in …
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New Constraints on Fault-Zone Structure from Seismic Guided Waves
… fault mechanics, earthquake rupture and seismic hazards. Fault zone seismic guided waves (GW) carry important information about internal structure of the low-velocity fault damage zone. Numerical modeling of observed FZGWs has been used to construct models of FZ structure. However, the …
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