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 15 of 15 for “"slow-slip"”.
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Seismic Constraints on Slow Slip Events within the Cascadia Subduction Zone
… zone have revealed at least 30 resolvable slow slip events along the megathrust, ranging from northern California to southern British Columbia, since 1997. Many of the smaller and more recent events are barely resolvable with GPS, but stand out clearly as tremor sequences. Since tremor …
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Energy Budget Analysis of Slow-Slip Tremor Events Along the Cascadia Subduction Zone Using Continuous GPS Array Data
… 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 suggested that the region of maximum slip lies …
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New slip and stress distributions hold implications for the next great earthquake in Cascadia
… advances in detection of seismic tremor and slow slip have revealed a new spectrum of fault behavior in subduction zones around the world. These phenomena live between the mechanisms of brittle failure and aseismic creep, and reduce stress on the deep portion of the subduction interface. …
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Igneous life cycles: geochemistry of magma from mantle to surface and back again
… of eruption on rapid (<100 kyr) timescales. Slow-slip megathrust events in the Hikurangi forearc region, New Zealand, may be related to seamount subduction. We examine differences in the clast origins, depositional settings, and diagenetic histories of volcaniclastic units to highlight the …
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Controls on earthquake rupture and triggering mechanisms in subduction zones
… due to aseismic processes such as fluid flow, slow slip, and afterslip trigger seismicity, often in the form of earthquake swarms. These swarms are modeled with two common approaches for investigating time-dependent driving mechanisms in earthquake catalogs: the stochastic Epidemic Type …
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Controls on earthquake rupture and triggering mechanisms in subduction zones
… due to aseismic processes such as fluid flow, slow slip, and afters lip trigger seismicity, often in the form of earthquake swarms. These swarms are modeled with two common approaches for investigating time-dependent driving mechanisms in earthquake catalogs: the stochastic Epidemic Type …
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Novel Multitemporal Synthetic Aperture Radar Interferometry Algorithms and Models Applied on Managed Aquifer Recharge and Fault Creep
… geological phenomena, detecting five significant slow slip events (SSEs) along the Southern San Andreas Fault using multitemporal SAR interferometric time series from 2015-2021. These SSEs govern aseismic slip dynamics, manifesting as avalanche-like creep rate variations. The study further …
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Global investigation of large earthquakes using long-period seismic data
… normal mode data to study very long-duration, slow-slip earthquake sources, such as the 2004 Mw 9.3 Sumatra-Andaman earthquake.
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Transient signal detection using GPS position time series
… of 2008 and two previously unrecognized small slow slip events with average surface displacements less than 2 mm, which was thought to be below current GPS resolution. The detection method improves the SNR and therefore provides higher resolution for detecting weak transient signals, and it can …
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From Fault Dynamics to Seismic Hazard Assessment
… portions which had accumulated a deficit of slip, in view of their long term slip rate, during the interseismic period. In Chapter 1, I explain how we implemented those constraints in the evaluation of the probability distribution describing the magnitude and return period of the largest …
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Field and theoretical investigations of strain localization: Effects of mineralogy, shear heating and grain size evolution on deformation in the Earth
… occurrence of intermediate depth earthquakes and slow slip events. In Chapter 4, we extend Chapter 3 and examine the feedbacks between grain size evolution, viscous dissipation and a complex temperature and grain size dependant viscosity in a one-dimensional model of a viscoelastic shear zone. We …
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Contributions to the Neotectonics of the central and northern Walker Lane
… by a broad zone of discontinuous active strike-slip and normal faulting that sit within a zone geodetically characterized by transtensional dextral shear. Strain in the Walker Lane is driven by the northwest translation of the Sierra Nevada and long-term geologic constraints on the distribution …
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Mathematical and Computational Modeling of Injection-induced Seismicity
… develop a spring-poroslider model of frictional slip as an analogue for induced seismicity, and analyze conditions for the emergence of stick-slip frictional instability—the mechanism for earthquakes—by carrying out a linear stability analysis and nonlinear simulations. We found that the …
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Mass transfer and chemical interactions in subduction zones
… roles in volatile transport, in facilitating slow-slip events, and in controlling the decoupling-coupling transition of the plate interface. Chapter 4 experimentally investigates the phase equilibria, melting, and density evolution of mélange rocks that formed by mixing and fluid-rock …
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Mass Transfer and Chemical Interactions in Subduction Zones
… roles in volatile transport, in facilitating slow-slip events, and in controlling the decoupling-coupling transition of the plate interface. Chapter 4 experimentally investigates the phase equilibria, melting, and density evolution of mélange rocks that formed by mixing and fluid-rock …