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 22 for “"Earthquake Rupture"”.
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Controls on earthquake rupture and triggering mechanisms in subduction zones
Large earthquake rupture and triggering mechanisms that drive seismicity in subduction zones are investigated in this thesis using a combination of earthquake observations, statistical and physical modeling. A comparison of the rupture characteristics of M ≥ 7.5 earthquakes with fore-arc geological …
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Controls on earthquake rupture and triggering mechanisms in subduction zones
Large earthquake rupture and triggering mechanisms that drive seismicity in subduction zones are investigated in this thesis using a combination of earthquake observations, statistical and physical modeling. A comparison of the rupture characteristics of M 7.5 earthquakes with fore-arc geological …
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Effects of fault failure parameterization and bulk rheology on earthquake rupture
… associated with material failure affect earthquake rupture nucleation and propagation. These processes are frictional sliding along faults of different roughness, fracturing of the intact rock sections connecting the preexisting planes of weakness (fault step overs) or cemented fault …
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The structural architecture of seismogenic faults, Sierra Nevada, California; implications for earthquake rupture processes
Earthquake ruptures along tectonically active faults nucleate predominantly at depths of 5 to 12km in the crust, so the portions of faults that slip in these events cannot be directly observed. The geometry and composition of seismogenic faults controls the nucleation, propagation and termination …
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Defining historical earthquake rupture parameters and proposed slip distributions through tsunami modeling in south-central Chile
… data were introduced this past century to study rupture dynamics in detail, however limited information is known about ruptures that pre-date the 20<sup>th</sup> century. I propose a methodology that uses statistics to better understand these pre-20<sup>th</sup> century ruptures. This methodology …
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Injection Induced Seismicity Modeling and Application to the Karapiti Reinjection Area, Wairakei, New Zealand
… between thermo-hydro-mechanical behaviours and earthquake rupture process in injection induced earthquake areas with a coupled numerical model. The physics based numerical modelling specially designed for injection induced seismicity integrates fluid flow, heat transfer, mechanical deformation …
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Quantifying forearc deformation patterns using coastal geomorphic markers
… are repeatedly breached by giant megathrust earthquakes. The coastal relief along tectonically active realms is shaped by the effect of sea-level variations and heterogeneous patterns of permanent tectonic deformation, which are accumulated through several cycles of megathrust earthquakes. …
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Evaluating Late Pleistocene and Holocene Rupture, Seismic Hazards and Ground Motion in the Lake Tahoe Basin
… seismic hazard within the basin as a result of earthquake rupture on the faults identified in the first part of this study. The Ground motions modeled using Nevada ShakeZoning, a physics-based method incorporating geotechnical information and basin shape determined from geophysical methods, peak …
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The dynamics of oceanic transform faults : constraints from geophysical, geochemical, and geodynamical modeling
… of fault segmentation on the maximum predicted earthquake magnitude of an oceanic transform fault system. Results of thermal modeling suggest that fault segmentation by intra-transform spreading centers (ITSC) drastically reduces the available brittle area of a transform fault and thus limits …
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The dynamics of oceanic transform faults : constraints from geophysical, geochemical, and geodynamical modeling
… of fault segmentation on the maximum predicted earthquake magnitude of an oceanic transform fault system. Results of thermal modeling suggest that fault segmentation by intra- transform spreading centers (ITSC) drastically reduces the available brittle area of a transform fault and thus limits …
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Modeling dynamic ruptures with high resolution fault zone physics
Earthquakes are among the costliest natural hazards on earth. The dynamical instabilities responsible for the onset and propagation of these events are linked to fundamental physics, friction, fracture, heating, and compaction of fluid filled granular materials and rocks in the subsurface subjected …
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Morphology and structure of the accretionary prism offshore North Sumatra, Indonesia and offshore Kodiak Island, USA : a comparison to seek a link between prism formation and hazard potential
… and Kodiak Islands experienced recent megathrust earthquakes with devastating tsunami; recurrence of large earthquakes is predicted. Studies of the accretionary prism offshore of northern Sumatra, 1-7°N and 92-97°E, reveal a steep outer slope (5-12°), a plateau ~100-120 km wide, and a steep inner …
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New Constraints on Fault-Zone Structure from Seismic Guided Waves
… important role in understanding 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 …
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A quasi-dynamic and self-consistent rupture model to simulate earthquake ruptures
Dynamic earthquake rupture modeling provides information on the rupture physics as the rupture velocity, frictions or tractions acting during the rupture process. Nevertheless, as often based on spatial gridded preset geometries, dynamic modeling is depending on many free parameters leading to both …
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Atmospheric and Ionospheric Responses to Acoustic and Gravity Waves Driven by Earthquakes and Tsunamis
… acoustic and gravity waves (AGWs) triggered by earthquakes and tsunamis, and their effects on mesopause airglow and ionospheric plasma.</p> <p>First, we examine coupling mechanisms based on case studies for two inland earthquakes. We demonstrate that the incorporation of near-epicentral seismic …
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Improved Understanding of The 2018 Mw7.5 Palu Earthquake Using Local Earthquake Tomography and Numerical Ground Motion Simulation
… graben. On September 28, 2018, a Mw7.5 earthquake at 12 km depth caused widespread destruction, including fatalities, building collapse, liquefaction, and a tsunami. This thesis investigates the regional velocity structure of Central Sulawesi, its correlation with geological features and …
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Improved Understanding of The 2018 Mw7.5 Palu Earthquake Using Local Earthquake Tomography and Numerical Ground Motion Simulation
… graben. On September 28, 2018, a Mw7.5 earthquake at 12 km depth caused widespread destruction, including fatalities, building collapse, liquefaction, and a tsunami. This thesis investigates the regional velocity structure of Central Sulawesi, its correlation with geological features and …
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Earthquake Processes Along Oceanic Transform Faults
This dissertation investigates the seismicity and rupture behavior of earthquakes occurring along oceanic transform faults (OTFs), with a particular focus on the integration of hydroacoustic observations (T-waves). Oceanic transform faults are a key plate boundary structure, yet their rupture …
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Effect of off-fault low-velocity elastic inclusions on supershear rupture dynamics
… layers and inclusions are expected to affect rupture propagation on faults embedded in these heterogeneous structures. Here,a model of dynamic rupture on a frictional fault embedded in an elastic full space is presented, governed by plane strain elasticity, with an off-fault inclusion that has …
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