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Showing 1 to 20 of 42 for “"Aftershock"”.
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Vulnerability assessment of extended end-plate connections under mainshock-aftershock sequences
… However, research into the effects of mainshock-aftershock sequences that occur during many earthquakes on connection behavior has generally been lacking. Moreover, assessment of connection behavior, whether subjected to mainshock or mainshock-aftershock sequences, using a probabilistic framework …
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Rheological Properties of Rocks as Inferred From the Study of Earthquake Aftershock Sequences
Made available in DSpace on 2015-05-12T21:41:57Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 7021045.PDF: 4686060 bytes, checksum: ecc590a28f5b89e0234a8eccf077418c (MD5) Previous issue date: 1970
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Stochastic model for the simulation of synthetic main shock-aftershock ground motion sequences
… main shock, a structure may still face damaging aftershocks. The main shock-aftershock sequence may result in major damage and eventually the collapse of a structure. Current studies on seismic hazard mainly focus on the modeling and simulation of main shocks. This paper proposes a stochastic …
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Improvement of aftershock models based on Coulomb stress changes and rate-and-state dependent friction
… earthquake forecasts, with a focus on aftershock sequences. Physical models of triggered 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 …
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Microseismic observations in the Ceres-Tulbagh aftershock zone, Western Cape, South Africa, and their tectonic implications
… was deployed for a 3 month period in the aftershock zone of the 1969 Ceres earthquake. A total of 168 microseismic events could be located within the boundaries of the array, roughly 30 km x 40 km. Travel times of these events were used for coupled hypocenter-velocity inversion to produce …
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Analysis and modeling of transient earthquake patterns and their dependence on local stress regimes
… and associated interactions, which includes aftershock triggering as well as induced seismicity, is important for seismic hazard assessment due to earthquakes destructive power. One of the approaches to study earthquake triggering and their interactions is the use of statistical earthquake …
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Revisioning, reconnecting and revisiting. Facing the aftershock of stroke in the first month post-discharge: an interpretative phenomenological analysis: an interpretative phenomenological analysis
This study is concerned with the impact of stroke, and in particular, the experiences of patients and carers following the return of the survivor to the home environment
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Improving statistical seismicity models
… expected in the spatial distribution of aftershocks. However, testing the different hypotheses is challenging because it requires the consideration of the large uncertainties involved in stress calculations as well as the appropriate consideration of secondary aftershock triggering which …
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Characteristics of Deep-Focus Earthquakes in the Northwestern Pacific
… depth 595 km), noted for its anomalously high aftershock activity. Rupture properties of the 1973 Japan event are precisely determined through the inversion of body waveforms. This event is shown to have occurred along a sub-horizontal fault, over a dimension of 55 +/- 10 km by 25 +/- 10 km in …
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Seismic Source and Attenuation Studies in the Central and Eastern United States
… in seismic-hazard maps. The well-recored aftershock sequence of the 2011 Mineral, Virginia, earthquake offers a rare opportunity to improve our understanding of earthquake processes and earthquake hazard in this populous region of the United States. Moreover, the rapid increase of …
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Statistical analysis of natural and induced seismicity catalogues
… zemětřesných rojů a sekvencí zvaných mainshock-aftershock (hlavní otřes - dotřes neboli MS-AS). Naše analýza neobjevila vhodný způsob, který by pouze na základně statistických časových a magnitudových vlastností obsažených v seismickém katalogu dokázal spolehlivě rozlišit přírodní a indukovanou …
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Geophysical Imaging of Earth Processes: Electromagnetic Induction in Rough Geologic Media, and Back-Projection Imaging of Earthquake Aftershocks
… heterogeneity. Seismic signals generated by aftershocks are generally recorded by local aftershock networks consisted of insufficient number of stations which result in strongly spatially-aliased aftershock data. This limits aftershock detections and locations at smaller magnitudes. Following …
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Fault plane structure of the 1995 Antofagasta Earthquake (Chile) derived from local seismological parameters
… to 44 seismic stations was set up to record the aftershock sequence. The seaward extension of the network with 9 OBH stations increased significantly the precision of hypocenter determinations. They were distributed mainly on the fault plane itself around the city of Antofagasta and Mejillones …
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Passive Seismic Tomography and Seismicity Hazard Analysis in Deep Underground Mines
… Statistical analyses were performed on the aftershock sequence in order to generate an aftershock decay model to detect potential hazards and evaluate stability of aftershock activities.
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Clustering in Multidimensional Spaces with Applications to Statistics Analysis of Earthquake Clustering
… and independent earthquakes into fore- and aftershock clusters is examined. This declustering program is improved with the implementation of an Expectation-Maximization algorithm that is able to automatically detect the two populations in an earthquake catalog and reset the separating …
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Controls on earthquake rupture and triggering mechanisms in subduction zones
… catalogs: the stochastic Epidemic Type Aftershock Sequence model [Ogata, 1988] and the physically-based rate-state friction model [Dieterich, 1994]. These approaches are combined into a single model that accounts for both aftershock activity and variations in background seismicity rate …
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Controls on earthquake rupture and triggering mechanisms in subduction zones
… catalogs: the stochastic Epidemic Type Aftershock Sequence model [Ogata, 1988] and the physically-based rate-state friction model [Dieterich, 1994]. These approaches are combined into a single model that accounts for both aftershock activity and variations in background seismicity rate …
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Hydrochemical Response of Groundwater Following the 2020 Monte Cristo Range Earthquake Sequence within Mineral and Esmeralda Counties, NV
… were observed following the initial shock and aftershocks >M 4, varying between sites and event. CM had significantly lower SpC values in the week following the May 15th event. During the early part of the seismic series, a period of high frequency and intensity aftershocks, MD showed a …
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