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 13 of 13 for “"Coulomb Stress"”.
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Improvement of aftershock models based on Coulomb stress changes and rate-and-state dependent friction
… seismicity are based on the redistribution of stresses in the crust, coupled with the rate-and-state constitutive law proposed by Dieterich to calculate changes in seismicity rate. This type of models are known as Coulomb- rate and-state (CRS) models. In spite of the success of the Coulomb …
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Characteristics of active deformation, fault interaction, and earthquake triggering in a rapidly-deforming complex normal fault network (south-west Türkiye)
… earthquake occurrence is to understand how stress and strain develop through a fault system over the earthquake cycle. In this thesis, Coulomb stress modelling, SAR interferometry, and field work are combined with a comprehensive literature review to study active deformation, fault …
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Dynamic links between short-term deformation and long-term tectonics: a finite element study
… I have explored the spatial-temporal strain and stress evolution during seismic cycles, and linked these results to long-term tectonics. In the central Andes, I found that much of the GPS-measured crustal shortening can be explained by interseismic and postseismic viscoelastic strains; the …
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Source Parameters and Tectonic Setting of the 2017 St. Elias Earthquake Sequence near the Southern Terminus of the Eastern Denali Fault, Northwestern Canada
… along two previously unmapped fault structures. Stress inversion indicates that the maximum principal stress axis is oriented almost perpendicular to the EDF, suggesting that the fault system is not well oriented for strike-slip in the contemporary stress field. Coulomb stress analysis indicates …
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Novel Multitemporal Synthetic Aperture Radar Interferometry Algorithms and Models Applied on Managed Aquifer Recharge and Fault Creep
… stabilize nearby faults by inducing a negative Coulomb stress change. Projecting into the future, a suggested 2% annual increase in recharge volume through 2050 could mitigate land subsidence and reduce seismic hazards in coastal cities vulnerable to relative sea level rise. This integrated …
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The dynamics of oceanic transform faults : constraints from geophysical, geochemical, and geodynamical modeling
… limits the available earthquake rupture area. Coulomb stress models suggest that long ITSCs will prohibit static stress interaction between segments of a transform system and further limit the maximum possible magnitude of a given transform fault earthquake. In Chapter 2, gravity anomalies from …
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Fault-Controlled Damage and Permeability at the Brady Geothermal System, Nevada, U.S.A.
… influence permeability. Simulations of the local stress state due to slip on a detailed model of the fault system at Brady Geothermal Field, NV, supported by models of key idealized fault geometries, are used to test the relationship between both productive wells or hydrothermal features and …
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The dynamics of oceanic transform faults : constraints from geophysical, geochemical, and geodynamical modeling
… limits the available earthquake rupture area. Coulomb stress models suggest that long ITSCs will prohibit static stress interaction between segments of a transform system and further limit the maximum possible magnitude of a given transform fault earthquake. In Chapter 2, gravity anomalies from …
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Seismic Source and Attenuation Studies in the Central and Eastern United States
… statistics of the aftershock sequence, and the Coulomb stress modeling that explains the triggering mechnanism of those aftershocks. Second, I examine the S-wave attenuation at critical short hypocentral distances (< 60 km) using the aftershock data. The observed S-wave amplitudes decay as a …
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Earthquakes in complex fault settings: Examples from the Oregon Cascades, Eastern California Shear Zone, and San Andreas fault
… and rupture scaling relationships to conduct Coulomb stress change modeling for the most recent earthquake on the Calico fault system. We find that the most recent event places regions adjacent to the fault in a stress shadow and may have both delayed the historic Landers and Hector Mine …
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A comprehensive study of the 26th December 2004 Sumatra earthquake: possible implications on Earth rotation and investigations on the coseismic and postseismic stress diffusion associated with the seismic rupture
… of the earthquake on the Earth rotation and the stress field variations associated with the seismic event. In the first part of the work we have quantified the effects of a water mass redistribution associated with the propagation of a tsunami wave on the Earth’s pole path and on the …
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Improving statistical seismicity models
… earthquake triggering process, including static stress interactions and dynamic stress transfer. Significant differences of these mechanisms are particularly expected in the spatial distribution of aftershocks. However, testing the different hypotheses is challenging because it requires the …
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Tectonic earthquake swarms in the Northern Volcanic Zone, Iceland
… swarms due an extremely well-resolved static stress change. As the dike intruded towards Askja, a surge in swarm seismicity was observed across the network of faults studied in this dissertation. In the absence of complicating factors present in the study of stress changes caused by large …