Recipe for Predicting Strong Ground Motion from Crustal
... motions based on a characterization of the source model for future crustal earthquakes. From recent developments of waveform inversion of strong motion data used to estimate the rupture process, we have inferred that strong ground motion is primarily related to the slip heterogeneity inside the sour ...
... motions based on a characterization of the source model for future crustal earthquakes. From recent developments of waveform inversion of strong motion data used to estimate the rupture process, we have inferred that strong ground motion is primarily related to the slip heterogeneity inside the sour ...
10950_2013_9375_MOESM1_ESM
... 1716 (IX, EMS); April 14, 1839 (VIII, EMS); June 18, 1847 (VI, MSK) and November 5, 1924 (VIII, MSK). These events were followed by a long sequence of aftershocks suggesting a high magnitude for the main shocks. The strongest seismic event recorded in the coastal region of Algiers is the ChenouaTipa ...
... 1716 (IX, EMS); April 14, 1839 (VIII, EMS); June 18, 1847 (VI, MSK) and November 5, 1924 (VIII, MSK). These events were followed by a long sequence of aftershocks suggesting a high magnitude for the main shocks. The strongest seismic event recorded in the coastal region of Algiers is the ChenouaTipa ...
Creeping along the Ismetpasa section of the North Anatolian fault
... [1,2]). In other cases, fault-creep appears to take place within a shallow depth interval and/or at a rate slower than the overall slip rate, and hence does not prevent the fault from producing moderate-to-large size earthquakes (e.g. southern and northern Hayward fault; [3,4]). Therefore, the rate ...
... [1,2]). In other cases, fault-creep appears to take place within a shallow depth interval and/or at a rate slower than the overall slip rate, and hence does not prevent the fault from producing moderate-to-large size earthquakes (e.g. southern and northern Hayward fault; [3,4]). Therefore, the rate ...
Deterministic seismic hazard assessment for Sultanate of Oman
... scheme to select the best earthquake parameters from the available catalogues. To ensure catalogue magnitude homogeneity, El-Hussain et al. (2012) converted all events for which moment magnitudes were not reported into this scale. The number of large earthquakes documented in the Arabian Peninsula i ...
... scheme to select the best earthquake parameters from the available catalogues. To ensure catalogue magnitude homogeneity, El-Hussain et al. (2012) converted all events for which moment magnitudes were not reported into this scale. The number of large earthquakes documented in the Arabian Peninsula i ...
SEISMOTECTONIC OF THE AZORES-ALBORAN - UPStrat-MAFA
... one fourth of the houses in Lisbon were totally destroyed with many persons killed. Damage was also reported from towns in Spain and northern Morocco and the shock was felt as far away as Holland and Switzerland. There are descriptions of tsunamis along the southwest coast of Portugal. The intensity ...
... one fourth of the houses in Lisbon were totally destroyed with many persons killed. Damage was also reported from towns in Spain and northern Morocco and the shock was felt as far away as Holland and Switzerland. There are descriptions of tsunamis along the southwest coast of Portugal. The intensity ...
P from the 2011 Tohoku-Oki earthquake Masatoshi Miyazawa
... by teleseismic waves provides a clue to understanding its mechanism because it is possible to directly investigate the stress/strain changes that excite NVT by distinguishing between incoming seismic waves and triggered events. Dynamic triggering of NVT associated with the passage of surface waves h ...
... by teleseismic waves provides a clue to understanding its mechanism because it is possible to directly investigate the stress/strain changes that excite NVT by distinguishing between incoming seismic waves and triggered events. Dynamic triggering of NVT associated with the passage of surface waves h ...
KeyGraph as Risk Explorer in Earthquake-Sequence
... movements and activities of faults. Hereafter, we call our system Fatal Fault Finder or F3 in short. F3 finds risky faults by applying KeyGraph, which was originally presented as a document-indexing algorithm (Ohsawa, 1998), not to a document but to a sequence of focal faults, that is, the faults wh ...
... movements and activities of faults. Hereafter, we call our system Fatal Fault Finder or F3 in short. F3 finds risky faults by applying KeyGraph, which was originally presented as a document-indexing algorithm (Ohsawa, 1998), not to a document but to a sequence of focal faults, that is, the faults wh ...
geol_15_patton_fall_..
... 27. (2.5 pts.) How long of a time period is shown in the time series plots? a) 3 years b) 4 years c) 5 years d) 5 1/2 years 28. (2.5 pts.) How far North did the Pacific Beach station move on the time series? a) 30 millimeters b) 40 millimeters c) 60 millimeters d) 90 millimeters ...
... 27. (2.5 pts.) How long of a time period is shown in the time series plots? a) 3 years b) 4 years c) 5 years d) 5 1/2 years 28. (2.5 pts.) How far North did the Pacific Beach station move on the time series? a) 30 millimeters b) 40 millimeters c) 60 millimeters d) 90 millimeters ...
Large submarine earthquakes occurred worldwide
... rence of an earthquake. As results, various research works have been performed in order to: (i) identify the source zones mostly prone to trigger tsunami around the world, (ii) understand the generation mechanism of tsunami sources, (iii) assess tsunami hazard, vulnerability, and risk along the coas ...
... rence of an earthquake. As results, various research works have been performed in order to: (i) identify the source zones mostly prone to trigger tsunami around the world, (ii) understand the generation mechanism of tsunami sources, (iii) assess tsunami hazard, vulnerability, and risk along the coas ...
Balance of seismic moment in the Songpan
... region, eastern Tibet. We have investigated the evolution of strain energy along major faults in this region by comparing the accumulation and release of seismic moment. First, we calculated the slip rates on the Longmen Shan and other major faults in the region using a three-dimensional regional-sc ...
... region, eastern Tibet. We have investigated the evolution of strain energy along major faults in this region by comparing the accumulation and release of seismic moment. First, we calculated the slip rates on the Longmen Shan and other major faults in the region using a three-dimensional regional-sc ...
6 Source Characterization
... For areal sources, the estimation of the maximum magnitude has traditionally been computed by considering the largest historical earthquake in the source zone and adding some additional value (e.g. half magnitude unit). For source zones with low historical seismicity rates, such as the Eastern Unite ...
... For areal sources, the estimation of the maximum magnitude has traditionally been computed by considering the largest historical earthquake in the source zone and adding some additional value (e.g. half magnitude unit). For source zones with low historical seismicity rates, such as the Eastern Unite ...
Dependence of earthquake recurrence times and independence of
... The slow decay provided by the decreasing power law is a signature of clustering, which means that the events tend to be closer to each other in the short time scale, in comparison with a Poisson process (given by f exponential, i.e., γ = a = δ = 1). In fact, clustering is more clearly identified by ...
... The slow decay provided by the decreasing power law is a signature of clustering, which means that the events tend to be closer to each other in the short time scale, in comparison with a Poisson process (given by f exponential, i.e., γ = a = δ = 1). In fact, clustering is more clearly identified by ...
Repeating earthquakes in the Yellowstone volcanic field
... Here we define the process used to retrieve multiplets, that is similar to that by Got et al. (1994), Rowe et al. (2002, 2004), Thelen et al. (2008), and Massin et al. (2011). The first step is populating a working Yellowstone earthquake waveform catalog with data from the University of Utah Seismogra ...
... Here we define the process used to retrieve multiplets, that is similar to that by Got et al. (1994), Rowe et al. (2002, 2004), Thelen et al. (2008), and Massin et al. (2011). The first step is populating a working Yellowstone earthquake waveform catalog with data from the University of Utah Seismogra ...
SOFT-STOREY BEHAVIOUR IN AN EARTHQUAKE and
... Soft storey is the one of which the rigidity is lower than any other storeys due to the fact that it has not got the walls with the same properties the other ones have. If vertical load bearing structural elements and the partitioning wall continue in all the storeys, there is no soft storey in the ...
... Soft storey is the one of which the rigidity is lower than any other storeys due to the fact that it has not got the walls with the same properties the other ones have. If vertical load bearing structural elements and the partitioning wall continue in all the storeys, there is no soft storey in the ...
OBSERVED BEHAVIOR OF SEISMICALLY ISOLATED BUILDINGS
... time-variant modal identification analyses. The buildings are identified as equivalent, time-varying, linear dynamic systems characterized by their time-varying modal parameters (including fundamental-mode natural frequencies, damping ratios, and mode shapes). The identification analyses for each si ...
... time-variant modal identification analyses. The buildings are identified as equivalent, time-varying, linear dynamic systems characterized by their time-varying modal parameters (including fundamental-mode natural frequencies, damping ratios, and mode shapes). The identification analyses for each si ...
August 2007
... April 24, 12:34 a.m. (maximum intensity VIII, estimated magnitude 6.3 + 0.3). It was felt from Winnemucca to Berkeley. Strong shaking lasted for approximately 15 seconds. In Reno, two chimneys came down on Lincoln Hall, and two chimneys came down on Manzanita Hall on the UNR campus. There was one bl ...
... April 24, 12:34 a.m. (maximum intensity VIII, estimated magnitude 6.3 + 0.3). It was felt from Winnemucca to Berkeley. Strong shaking lasted for approximately 15 seconds. In Reno, two chimneys came down on Lincoln Hall, and two chimneys came down on Manzanita Hall on the UNR campus. There was one bl ...
Seismotectonic modeling of the repeating Katsuhiko Ishibashi
... 1923 great Kanto earthquakes (K in Fig. 1(b)). Odawara suffered the heaviest damage among disaster areas by these two earthquakes. The 1633, 1782 and 1853 disasters were caused by M 7-class earthquakes around Odawara. Despite the remarkably constant repeat time of the five disasters at Odawara due t ...
... 1923 great Kanto earthquakes (K in Fig. 1(b)). Odawara suffered the heaviest damage among disaster areas by these two earthquakes. The 1633, 1782 and 1853 disasters were caused by M 7-class earthquakes around Odawara. Despite the remarkably constant repeat time of the five disasters at Odawara due t ...
Earthquake Analysis of Top Storey Isolated Building using Rubber
... Top storey isolated model shows reducing the design parameters i.e. base shear and bending moment in the structural members. In the base shear forces, the results of the BI building provided 30% reduction in the x direction and 32% reduction in the y direction. Time period affects the earthquake res ...
... Top storey isolated model shows reducing the design parameters i.e. base shear and bending moment in the structural members. In the base shear forces, the results of the BI building provided 30% reduction in the x direction and 32% reduction in the y direction. Time period affects the earthquake res ...
Are earthquakes predictable? - San Andreas UCLA Seismic
... not be interpreted as a statement that any further attempts to mitigate the destructive effects of earthquakes are futile. The seismic-moment conservation principle, when combined with geodetic deformation data, offers a new way to evaluate the seismic hazard, not only for tectonic plate boundaries, ...
... not be interpreted as a statement that any further attempts to mitigate the destructive effects of earthquakes are futile. The seismic-moment conservation principle, when combined with geodetic deformation data, offers a new way to evaluate the seismic hazard, not only for tectonic plate boundaries, ...
Earthquake Sources and Hazard in Northern Central America
... complex area. It is embedded between the Caribbean and North American plates and is bounded by the Cocos plate to the southwest. A cursory inspection of earthquake activity maps reveals high seismicity in the area. According to historical records, large earthquakes, reaching magnitudes up to M=8 hav ...
... complex area. It is embedded between the Caribbean and North American plates and is bounded by the Cocos plate to the southwest. A cursory inspection of earthquake activity maps reveals high seismicity in the area. According to historical records, large earthquakes, reaching magnitudes up to M=8 hav ...
Global Strategy of JCI on ISO Standard for Seismic Evaluation and
... Earthquakes that cause damage to structures occur frequently in many areas of the world. Especially, heavy damage by earthquakes concentrates in vulnerable structures and vulnerable parts. As the result of the direct action of earthquakes, RC structures may collapse or overturn in earthquake prone a ...
... Earthquakes that cause damage to structures occur frequently in many areas of the world. Especially, heavy damage by earthquakes concentrates in vulnerable structures and vulnerable parts. As the result of the direct action of earthquakes, RC structures may collapse or overturn in earthquake prone a ...
report
... paleoearthquakes occurred on the Reelfoot fault, with the timing of the paleoearthquakes independently determined from paleoliquefaction features and fault scarp trenching. It appears that the meandering river straightened as a result of changes in the ground elevation due to movement of the fault. ...
... paleoearthquakes occurred on the Reelfoot fault, with the timing of the paleoearthquakes independently determined from paleoliquefaction features and fault scarp trenching. It appears that the meandering river straightened as a result of changes in the ground elevation due to movement of the fault. ...
Intricacies of the Himalayan seismotectonics and seismogenesis
... of Seeber et al. 18, and an evolutionary model of Ni and Barazangi 13 have been proposed to explain the Himalayan seismicity. In the steady state model, the zone of detachment has been identified as a portion of the active thrust fault between the subducting slab and the sedimentary wedge22, while t ...
... of Seeber et al. 18, and an evolutionary model of Ni and Barazangi 13 have been proposed to explain the Himalayan seismicity. In the steady state model, the zone of detachment has been identified as a portion of the active thrust fault between the subducting slab and the sedimentary wedge22, while t ...
Surface Deformation and Seismic Rebound: Implications and
... elastic rocks are capable of stress accumulation. When the accumulated energy is partially (or as completely as possible) released, dislocation happens in weak sites of strata during earthquakes. On the other hand, previous studies have suggested that post-seismic rebounds are closely related to vis ...
... elastic rocks are capable of stress accumulation. When the accumulated energy is partially (or as completely as possible) released, dislocation happens in weak sites of strata during earthquakes. On the other hand, previous studies have suggested that post-seismic rebounds are closely related to vis ...
Earthquake geotechnical engineering practice
... Earthquakes Royal Commission (CERC) to consider the adequacy of current legal and best practice requirements for the design, construction, and maintenance of buildings in the context of earthquake risk. Seven volumes of reports were published with 189 recommendations. Of these recommendations, 175 s ...
... Earthquakes Royal Commission (CERC) to consider the adequacy of current legal and best practice requirements for the design, construction, and maintenance of buildings in the context of earthquake risk. Seven volumes of reports were published with 189 recommendations. Of these recommendations, 175 s ...
April 2015 Nepal earthquake
The April 2015 Nepal earthquake (also known as the Gorkha earthquake) killed more than 9,000 people and injured more than 23,000. It occurred at 11:56 NST on 25 April, with a magnitude of 7.8Mw or 8.1Ms and a maximum Mercalli Intensity of IX (Violent). Its epicenter was east of the district of Lamjung, and its hypocenter was at a depth of approximately 8.2 km (5.1 mi). It was the worst natural disaster to strike Nepal since the 1934 Nepal–Bihar earthquake.The earthquake triggered an avalanche on Mount Everest, killing at least 19, making April 25, 2015 the deadliest day on the mountain in history. The earthquake triggered another huge avalanche in the Langtang valley, where 250 people were reported missing.Hundreds of thousands of people were made homeless with entire villages flattened, across many districts of the country. Centuries-old buildings were destroyed at UNESCO World Heritage sites in the Kathmandu Valley, including some at the Kathmandu Durbar Square, the Patan Durbar Square, the Bhaktapur Durbar Square, the Changu Narayan Temple and the Swayambhunath Stupa. Geophysicists and other experts had warned for decades that Nepal was vulnerable to a deadly earthquake, particularly because of its geology, urbanization, and architecture.Continued aftershocks occurred throughout Nepal at the intervals of 15–20 minutes, with one shock reaching a magnitude of 6.7 on 26 April at 12:54:08 NST. The country also had a continued risk of landslides.A major aftershock occurred on 12 May 2015 at 12:51 NST with a moment magnitude (Mw) of 7.3. The epicenter was near the Chinese border between the capital of Kathmandu and Mt. Everest. More than 200 people were killed and more than 2,500 were injured by this aftershock.