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.
Results
Showing 1 to 13 of 13 for “"Moment Magnitude"”.
-
Detection of Urban Damage Using Remote Sensing and Machine Learning Algorithms: Revisiting the 2010 Haiti Earthquake
… caused by the 2010 Port-au-Prince, Haiti 7.0 moment magnitude (Mw) event. Additionally, textural and structural features including entropy, dissimilarity, Laplacian of Gaussian, and rectangular fit are investigated as key variables for high spatial resolution imagery classification. Our …
-
Seismic Wave Velocity Variations in Deep Hard Rock Underground Mines by Passive Seismic Tomography
… major seismic events (defined as having a local moment magnitude between 2 to 4). Seismic velocity changes in affected areas can be measured before and after a major seismic event in order to determine the highly stressed zones. This study evaluates the seismic velocity trends associated with …
-
Considering a Seismically Active Leech River Valley Fault Zone in Southwestern British Columbia
… surface-rupturing earthquakes have exceeded a moment magnitude (M) of 6 within a proposed Leech River Valley Fault Zone (LRVFZ) within the last 9,000 years. We examine the impact of an active LRVFZ to predicted earthquake ground motions for Victoria. In a probabilistic formulation considering …
-
Slip Estimation from Real-Time GPS in Cascadia
… to determine slip along the relevant faults. The moment and moment magnitude are calculated based on the estimated slip. The final solutions, detected offsets, calculated offsets and other relevant data are continuously pushed out to a database even when no earthquake is detected. The produced …
-
Microseismic Monitoring of a Room and Pillar Retreat Coal Mine in Southwest Virginia
… microseismic events were located, and their moment magnitudes were found. An analysis was completed to observe the redistribution of stress and related gob formation throughout the panel's retreat. Expectations for the gob formation were consistent with the distribution of microseismic …
-
A Study of Mine-Related Seismicity in a Deep Longwall Coal Mine
… equation was developed to relate local magnitude estimated by automatic data processing software in near real-time to seismic moment for well-recorded events. Local magnitude is a relative measure of relative size for a suite of earthquakes, while seismic moment is an objective measure …
-
Seismic Constraints on Slow Slip Events within the Cascadia Subduction Zone
… they offer the highest resolution for studying moment release through time. To test the hypothesis that tremor and transient deformation are two manifestations of the same faulting process, and to quantify the relative contribution of moment release during times of strain-transients versus other …
-
Analysis of Seismic Signatures Generated from Controlled Methane and Coal Dust Explosions in an Underground Mine
… analysis procedures in order to estimate the moment magnitude and radiated seismic energy. The procedures used to analyze the data were conducted using self-produced programs not available with existing commercial software. The signatures of the explosions were found to be extremely complex …
-
Seismic parameters for the central United States based on paleoliquefaction evidence in the Wabash Valley
… outside that Zone suggest prehistoric earthquake magnitudes in the Wabash Valley far exceed historical events. This geotechnical engineering study of paleoliquefaction sites in southern Indiana and along the Wabash River in Illinois has provided an opportunity to estimate magnitudes and …
-
Investigation of Parameters Influencing Reverse Fault Rupture Propagation to the Ground Surface
… frameworks rely only on fault mechanism and moment magnitude to predict the probability of rupture to the ground surface. However, recent work has shown that there may be other parameters which also deserve consideration. For example, statistical analyses have demonstrated that variation in …
-
Determination of the energy magnitude ME : application to rapid response purposes and insights to regional/local variabilities
… and rapid procedures to properly calculate the magnitude of an earthquake in a short time after its occurrence. The most famous example is the 26 December 2004 Sumatra earthquake, when the limitations of the standard procedures adopted at that time by many agencies failed to provide accurate …
-
Different styles of deformation of the fore-arc wedge along the Chilean convergent margin : insights from 3D numerical experiments
… the 1960 Valdivia earthquake, occurred with a moment magnitude of MW=9.5. I have constructed 2D thermal models and 3D mechanical models for both Chilean study areas to study processes related to active subduction. The applied numerical method is the finite element technique by means of the …
-
The dynamic soil structure interaction of shallow foundations on dry sand beds
… in a significant increase in the displacement magnitude experienced by the structure. The behaviour is not unexpected, as the same behaviour can be observed from the analytical analysis of a simple single degree of freedom system. Inaddition, a strong correlation between rocking, sliding and …