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Showing 1 to 19 of 19 for “"Fault Rupture"”.
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Interaction of earthquake fault rupture with shallow foundations
During earthquakes, emergence of a fault rupture has always been a major threat to the safety of critical structures, as it is very difficult to predict the exact location and magnitude of the fault rupture. Until recently , work concentrated largely on the effect of faulting on lifeine systems …
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Survey of Surface Fault Rupture and Structure Interation
… to raise awareness of the hazards of surface fault rupture and to identify parameters that influence structural performance during earthquake fault rupture. In researching structures subject to surface rupture, both damaged and sound, guidelines and procedures to evaluate buildings in …
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The Role of Soil Stiffness in Reverse Fault Rupture Propagation
… soil properties which affect the rate of surface fault rupture propagation in reverse events. These numerical simulations show a trend for soils with higher stiffness to have a higher rate of rupture propagation. Additionally the study shows the effects of strain softening and hardening on the …
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Investigation of Parameters Influencing Reverse Fault Rupture Propagation to the Ground Surface
<p>Surface fault rupture poses a serious threat to infrastructure in many seismically active regions, but knowledge about the factors which control the likelihood of surface displacement is limited. Current probabilistic frameworks rely only on fault mechanism and moment magnitude to predict the …
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Landslides and surface fault rupture from the Mw 7.8 2016 Kaikōura Earthquake
… that initiated failure. It was found that active faults form site conditions that are conducive to the initiation of large volume EILs. The presence of an active fault through the source area, and the dynamic component of near-fault, pulse-like ground motions were more important for triggering …
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Analysis and modeling of induced seismicity in petroleum reservoirs
… are generated by movement along a known fault system in the field, or by some other mechanism; 2) if the source is fault related, to better understand what kind of movement is occurring on the fault; and 3) to see if this simple modeling method provides useful results, and forms a basis …
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Mapping and Modeling the Seattle Fault Tsunami Inundation in Puget Sound
… threaten the region are earthquakes on crustal faults in the Puget Lowlands, or earthquakes originating on the Cascadia subduction zone. This study investigated two coastal marshes in Puget Sound, Deer Lagoon and Doe-Kag-Wats, for evidence of a paleotsunami record to combine with tsunami …
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Informing Code-Compliant Site-Specific Infrastructure Seismic Evaluations With Physics-Based Simulated Ground Motions
… the hazard at the site, including magnitude, fault distance, tectonic regime, and impulsive character. When tasked with the design at sites residing in the vicinity of a major active fault with site conditions not well represented in the existing catalogs of records, engineers face the …
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Controls on the distribution of landslides triggered by the 2008 Wenchuan earthquake, Sichuan Province, China
… a large continental thrust event with complex faulting mechanisms and diverse geophysical conditions. To achieve this, the following investigation builds upon recent advances in landslide remote sensing, to develop automated detection algorithms through which landslides can be accurately mapped …
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Expanding the stratigraphic record of tsunami inundation along the semi-arid, siliciclastic coast of north-central Chile
… offshore of the north-central Chile coast with a fault-rupture length of approximately 150 km. The earthquake triggered a tsunami that impacted 500 km of coastline from Huasco (28.5°S) to San Antonio (33.5°S), registering as much as 4.5 m on the tide gauge at Coquimbo (30.0°S) with run-up heights …
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Decoding Seismic Hazard Enigmas via Next-Generation Paleoseismic Analyses: With Application to the Cascadia Subduction Zone and Beyond
… provide inputs to seismic-hazard analyses (i.e., fault locations and magnitude-frequency relations) or to inform ground-motion predictions for certain seismic sources. As a result, analyses of macroseismic evidence (e.g., landslides, liquefaction, and felt intensities) are commonly used to help …
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Modeling the Dynamic Response of Vertical Spent Nuclear Fuel Dry Storage Casks under Three-Dimensional Earthquake Wave Fields
… from a 3D geophysics model with a strike-slip fault rupture scenario capable of generating a M7.0 seismic event. Then, the domain reduction method (DRM) was implemented to port the motions to the DRM layer of a truncated soil domain generated in LS-DYNA. Three DSC configurations were …
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Characterization of a blind geothermal prospect through LiDAR analysis and shallow temperature survey, Gabbs Valley, Nye and Mineral Co., NV
… prospect site were investigated using Quaternary fault mapping from LiDAR and low sun-angle aerial photos. Reconnaissance geochemistry from a spring seep on a Holocene fault scarp, and a two-meter temperature survey were used to investigate geothermal activity. Active Holocene faulting has been …
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Improving seismic site response analysis for non-standard sites
… of this phenomenon: from the knowledge of the fault rupture generating the seismic waves, through the overall travel path of these waves, to the modification of the waves near the surface. In this work, I concentrate my attention on the uncertainties connected with the near-surface soil …
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A comparison of proxies for seismic site conditions and amplification for the large urban area of Santiago de Chile
… event occurring along the active San Ramón fault, which is crossing the eastern outskirts of the city, shows that the unfavorable interaction between fault rupture, radiation mechanism, and complex geological conditions in the near-field may give rise to large values of peak ground velocity …
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Improved Understanding of The 2018 Mw7.5 Palu Earthquake Using Local Earthquake Tomography and Numerical Ground Motion Simulation
The Palu Koro Fault (PKF) in Central Sulawesi is a highly active fault posing significant seismic risk. It runs through Palu, a city of 500,000 population, forming a sediment-filled graben. On September 28, 2018, a Mw7.5 earthquake at 12 km depth caused widespread destruction, including fatalities, …
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Improved Understanding of The 2018 Mw7.5 Palu Earthquake Using Local Earthquake Tomography and Numerical Ground Motion Simulation
The Palu Koro Fault (PKF) in Central Sulawesi is a highly active fault posing significant seismic risk. It runs through Palu, a city of 500,000 population, forming a sediment-filled graben. On September 28, 2018, a Mw7.5 earthquake at 12 km depth caused widespread destruction, including fatalities, …
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Soil-pipeline interaction in unsaturated soils
… the soil-pipeline interaction under strike-slip fault movements. The finite element model was first validated by comparing the computed results to the data produced from a full scale experiment carried out at CU. The analysis was then further extended by varying the initial conditions of the sand …
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Neotectonics and Paleoseismology of the North Frontal Thrust System, southern California
Seismic hazard assessment of intersecting fault systems, such as the strike-slip and reverse faults of the Los Angeles basin, is hindered by complex patterns of rupture that are currently difficult to predict. To improve this understanding, constraints on the previous rupture patterns of such …