Long-term frequency and damping wandering in buildings
... observed, such as during the second week of August. The same trend was previously observed by Clinton et al. (2006), i.e. frequency increases with temperature. The scientific explanation for frequency variations has not yet been completely understood but it may result from the expansion of concrete ...
... observed, such as during the second week of August. The same trend was previously observed by Clinton et al. (2006), i.e. frequency increases with temperature. The scientific explanation for frequency variations has not yet been completely understood but it may result from the expansion of concrete ...
The tsunami generated from the eruption of the volcano of Santorin
... tsunami wave at the source could not have exceeded 50 m The pumice deposits found on the northeastern side of the island of Anaphi, at 160 and at 250 m could not have been carried by tsunami waves of any eruption or of any other earthquake. These values are simply too high. Furthermore, even a 50m t ...
... tsunami wave at the source could not have exceeded 50 m The pumice deposits found on the northeastern side of the island of Anaphi, at 160 and at 250 m could not have been carried by tsunami waves of any eruption or of any other earthquake. These values are simply too high. Furthermore, even a 50m t ...
Variations of fluid pressure within the subducting oceanic crust and
... Figure 1. Seismotectonic setting of central Japan and locations of linear seismic array. (a) The linear seismic array subparallel to the convergence direction of the Philippine Sea plate (PSP) is denoted as a bold green line. Blue contour lines and arrows represent slip rate and slip direction of th ...
... Figure 1. Seismotectonic setting of central Japan and locations of linear seismic array. (a) The linear seismic array subparallel to the convergence direction of the Philippine Sea plate (PSP) is denoted as a bold green line. Blue contour lines and arrows represent slip rate and slip direction of th ...
Earthquake Disaster Guidelines - National Disaster Management
... and technical institutions, academics, technocrats, architects and humanitarian organizations. The first such meeting was held on 21 December 05. It reviewed the status of earthquake management efforts thus far, identified gaps and set the framework for the approach. Thereafter, a Core Group was con ...
... and technical institutions, academics, technocrats, architects and humanitarian organizations. The first such meeting was held on 21 December 05. It reviewed the status of earthquake management efforts thus far, identified gaps and set the framework for the approach. Thereafter, a Core Group was con ...
Earthquakes, Existing Buildings and Seismic Design Codes in
... earthquakes were the most severe ones, with magnitudes of 6.9, 7.4 and 7.2, respectively [1–3]. According to a recent investigation, the probability of an earthquake with magnitude 7.0 or greater to affect Istanbul, the cultural and economic center of Turkey, is around 41 ± 4% in the next 30 years [ ...
... earthquakes were the most severe ones, with magnitudes of 6.9, 7.4 and 7.2, respectively [1–3]. According to a recent investigation, the probability of an earthquake with magnitude 7.0 or greater to affect Istanbul, the cultural and economic center of Turkey, is around 41 ± 4% in the next 30 years [ ...
Improving the system for managing earthquake
... and displacement) 8. Because the definition relates to the site of the building, it takes into account the different levels of seismicity around New Zealand. A Determination, issued by the former Department of Building and Housing in 2012, concluded that where the provisions in the Act relating to ...
... and displacement) 8. Because the definition relates to the site of the building, it takes into account the different levels of seismicity around New Zealand. A Determination, issued by the former Department of Building and Housing in 2012, concluded that where the provisions in the Act relating to ...
Question paper - Unit F791/01
... epicentre 70 km off the coast of Japan at a focal depth of 32 km. The island of Honshu moved 2.5 m to the east. Over 15 000 people are known to have died. (a) What type of plate tectonic setting was responsible for the Honshu earthquake? ...
... epicentre 70 km off the coast of Japan at a focal depth of 32 km. The island of Honshu moved 2.5 m to the east. Over 15 000 people are known to have died. (a) What type of plate tectonic setting was responsible for the Honshu earthquake? ...
Time-dependent analysis of aftershock events and structural impacts
... The 1941 Erciž (MS 5.9-6.0) earthquake caused damage in the N-NW of Lake Van (Fig. 1a) [4, 24, 25]. The most destructive event located along the E-shore of the lake is the 1945 Van earthquake sequence as the largest shock occurred on 20 November (MS 5.5-5.8) [21, 22, 24, 25, 4]. The 1972 Gevaž and 1 ...
... The 1941 Erciž (MS 5.9-6.0) earthquake caused damage in the N-NW of Lake Van (Fig. 1a) [4, 24, 25]. The most destructive event located along the E-shore of the lake is the 1945 Van earthquake sequence as the largest shock occurred on 20 November (MS 5.5-5.8) [21, 22, 24, 25, 4]. The 1972 Gevaž and 1 ...
Existence of low-velocity zones under the source areas of the... 2007 Chuetsu-oki earthquakes inferred from travel-time tomography
... the source areas of the two events to the southwest. Low200 velocity zones at a depth of 40 km are generally correlated spatially with the distribution of Quaternary volcanoes, but Fig. 4. (a) P-wave and (b) S-wave velocity perturbations at a depth the source areas of the two events are exceptional ...
... the source areas of the two events to the southwest. Low200 velocity zones at a depth of 40 km are generally correlated spatially with the distribution of Quaternary volcanoes, but Fig. 4. (a) P-wave and (b) S-wave velocity perturbations at a depth the source areas of the two events are exceptional ...
Hypocenter depths of large interplate earthquakes and their relation
... negative at depths from 6.0 to 43.6 km. This region may approximately correspond to the seismogenic zone, where earthquakes take place. A similar depth dependence of A and B has been applied for seismic cycle simulations (e.g. Stuart [18], Kato and Hirasawa [13]), because the friction parameters var ...
... negative at depths from 6.0 to 43.6 km. This region may approximately correspond to the seismogenic zone, where earthquakes take place. A similar depth dependence of A and B has been applied for seismic cycle simulations (e.g. Stuart [18], Kato and Hirasawa [13]), because the friction parameters var ...
Coseismic stress changes and crustal deformation on the Reykjanes
... [7] Surface faulting observed for the three events indicate rupture on N – S trending faults, with severe disruption found at the eastern shore of lake Kleifarvatn [Clifton et al., 2003]. The level of lake Kleifarvatn dropped by about 4 m during the first 18 months following the June 2000 ...
... [7] Surface faulting observed for the three events indicate rupture on N – S trending faults, with severe disruption found at the eastern shore of lake Kleifarvatn [Clifton et al., 2003]. The level of lake Kleifarvatn dropped by about 4 m during the first 18 months following the June 2000 ...
An Alternative Probabilistic Seismic Hazard Assessment Method in
... in the vicinity of areas where earthquakes have occurred in recorded history but the main concern with this type of model is the inherent underestimation of seismic hazard in areas where the historical database does not show any significant local seismic activity. Intraplate seismicity by definition ...
... in the vicinity of areas where earthquakes have occurred in recorded history but the main concern with this type of model is the inherent underestimation of seismic hazard in areas where the historical database does not show any significant local seismic activity. Intraplate seismicity by definition ...
Probabilistic seismic hazard analysis
... various models and (b) corresponding corner frequencies and moment ratios...................29 Table 5-2. (a) Spectra shape factor relations for various models and (b) corresponding corner frequencies and moment ratios.................................................................................. ...
... various models and (b) corresponding corner frequencies and moment ratios...................29 Table 5-2. (a) Spectra shape factor relations for various models and (b) corresponding corner frequencies and moment ratios.................................................................................. ...
Repeating earthquakes in the Yellowstone volcanic field
... (2008), and Massin et al. (2011). The first step is populating a working Yellowstone earthquake waveform catalog with data from the University of Utah Seismograph Stations (UUSS). 2.1. Yellowstone seismic network and data The UUSS operates the Yellowstone seismic network (Fig. 1A) that has consisted ...
... (2008), and Massin et al. (2011). The first step is populating a working Yellowstone earthquake waveform catalog with data from the University of Utah Seismograph Stations (UUSS). 2.1. Yellowstone seismic network and data The UUSS operates the Yellowstone seismic network (Fig. 1A) that has consisted ...
Surface Deformation and Seismic Rebound: Implications and
... stress. If loading stress on strata is less than the maximum static friction force, it would be stored via rock deformation based on classical mechanisms (Den Hartog 1961; Ruina and Pratap 2002). Once the sequential loading stress exceeds the threshold, which rocks can withstand via deformation, wea ...
... stress. If loading stress on strata is less than the maximum static friction force, it would be stored via rock deformation based on classical mechanisms (Den Hartog 1961; Ruina and Pratap 2002). Once the sequential loading stress exceeds the threshold, which rocks can withstand via deformation, wea ...
CLASSIFICATIONS OF STRUCTURAL TYPES AND DAMAGE
... Without doubt, field investigation for buildings destroyed due to a large earthquake is the most primitive activity on earthquake protection strategies. A lot of ways of field investigations have been carried out all over the world after large earthquakes. The Earthquake Engineering Research Institu ...
... Without doubt, field investigation for buildings destroyed due to a large earthquake is the most primitive activity on earthquake protection strategies. A lot of ways of field investigations have been carried out all over the world after large earthquakes. The Earthquake Engineering Research Institu ...
Generalized statistical mechanics approaches to earthquakes and
... where C, γ and τ 0 are positive constants. The latter expression exhibits two regions, where short inter-event times, associated with short-term clustering effects and aftershock sequences, scale as a power law with exponent 1 − γ , while long inter-event times that are associated with the backgroun ...
... where C, γ and τ 0 are positive constants. The latter expression exhibits two regions, where short inter-event times, associated with short-term clustering effects and aftershock sequences, scale as a power law with exponent 1 − γ , while long inter-event times that are associated with the backgroun ...
Consultation on Introduction of Seismic
... forthcoming about introducing seismic-resistant requirements for major A&A works, the stakeholders were more cautious on this and expressed concerns over various issues which might render the proposal not feasible. The major concern was the practical difficulties in strengthening the foundations and ...
... forthcoming about introducing seismic-resistant requirements for major A&A works, the stakeholders were more cautious on this and expressed concerns over various issues which might render the proposal not feasible. The major concern was the practical difficulties in strengthening the foundations and ...
? AN EVALUATION OF CHINESE ANNUAL
... al., 1993; SSB, 1996). How these CSB predictions should be evaluated is a question of great interest to seismologists all over the world: earthquake predictions and their evaluation are very topical questions that are strongly debated (e.g. Stark, 1996; Geller et al., 1997). The Chinese annual predi ...
... al., 1993; SSB, 1996). How these CSB predictions should be evaluated is a question of great interest to seismologists all over the world: earthquake predictions and their evaluation are very topical questions that are strongly debated (e.g. Stark, 1996; Geller et al., 1997). The Chinese annual predi ...
MEASUREMENT OF SOLUBLE RADON IN JOOSHAN SPA (SE OF
... parameters, because based on researches by other scientists, the affect of whole environmental parameters on radon concentration in less than 20%. So the anomalies associated with these parameters could be ignored in some cases. The epicenter distribution of earthquakes during the monitoring period ...
... parameters, because based on researches by other scientists, the affect of whole environmental parameters on radon concentration in less than 20%. So the anomalies associated with these parameters could be ignored in some cases. The epicenter distribution of earthquakes during the monitoring period ...
Green et al (2010) - Experimental Studies of Planetary Materials
... it gives rise to in the lower mantle, namely magnesium silicate perovskite and magnesiowüstite22. Therefore, if wet ringwoodite were present in a down-going slab that passes into the lower mantle (for example along the southern end of the Marianas slab), dehydration should result in a flurry of ear ...
... it gives rise to in the lower mantle, namely magnesium silicate perovskite and magnesiowüstite22. Therefore, if wet ringwoodite were present in a down-going slab that passes into the lower mantle (for example along the southern end of the Marianas slab), dehydration should result in a flurry of ear ...
Earthquake Analysis of Top Storey Isolated Building using Rubber
... 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 response of the structure, as the time period increases the base shear and acceleration values found to be reducing. In the nonl ...
... 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 response of the structure, as the time period increases the base shear and acceleration values found to be reducing. In the nonl ...
Observations and Tectonic Setting of Historic
... values for those earthquakes along with those for the sequence in central New Jersey in 1938 (Street and Turcotte, 1977) and the 1985 Ardsley, New York, shock of mb Lg 4.2 (Kim, 1998) are shown as red circles in Figure 4. While some events as small as mb Lg 2 are felt, felt area decreases rapidly fo ...
... values for those earthquakes along with those for the sequence in central New Jersey in 1938 (Street and Turcotte, 1977) and the 1985 Ardsley, New York, shock of mb Lg 4.2 (Kim, 1998) are shown as red circles in Figure 4. While some events as small as mb Lg 2 are felt, felt area decreases rapidly fo ...
The mechanism of intraplate earthquakes: insights from geodynamic
... faults without historically recorded earthquakes, such as the Meers fault in Oklahoma [Crone and Luza, 1990], appear to have had prehistoric large events [Clark and McCue, 2003]. The earthquakes in continental intraplate regions may also occur in temporal clusters. For example, earthquakes in North ...
... faults without historically recorded earthquakes, such as the Meers fault in Oklahoma [Crone and Luza, 1990], appear to have had prehistoric large events [Clark and McCue, 2003]. The earthquakes in continental intraplate regions may also occur in temporal clusters. For example, earthquakes in North ...
A survey of methods and techniques used for Seismic retrofitting of
... method for existing open ground storey RC frame buildings. A two dimensional RC frame is designed with non-ductile. Detailing is subjected to nonlinear static pushover analysis. The RC frame is retrofitted by three methods. a) Concrete jacketing of columns in the ground storey, b)Brick masonry infil ...
... method for existing open ground storey RC frame buildings. A two dimensional RC frame is designed with non-ductile. Detailing is subjected to nonlinear static pushover analysis. The RC frame is retrofitted by three methods. a) Concrete jacketing of columns in the ground storey, b)Brick masonry infil ...
1880 Luzon earthquakes
The earthquakes of July 1880 in Luzon, the largest island of the Philippines, was one of the most destructive tremors on record in the history of the country. The shocks continued, with greater or less interruption, from the 14th to the 25th of the month, highlighted by three violent shaking events, which destroyed churches and other buildings, producing loss of life. Coinciding with the tectonic activity was an increased in volcanic activity in Taal Volcano in southwestern Luzon.The Luzon provinces of Manila, Cavite, Bulacan, Laguna, Pampanga, and Nueva Ecija, were the chief victims from the terrible convulsions with Manila and Laguna receiving the most damages. In many places, buildings were converted into shapeless heaps of ruins, and the materials of their prosperity buried beneath the rubbish.