Report of the 2016 Kumamoto Earthquake
... (B) is the Modified Mercalli (MMI scale). At right, column (E) is acceleration in mgal. This table indicates JMAI 7 of the Kumamoto event ranges from MMI 10 to 12, but due to the record, the maximum shake of 16th of April must be of 12, because it is reported that the maximum acceleration attained 1 ...
... (B) is the Modified Mercalli (MMI scale). At right, column (E) is acceleration in mgal. This table indicates JMAI 7 of the Kumamoto event ranges from MMI 10 to 12, but due to the record, the maximum shake of 16th of April must be of 12, because it is reported that the maximum acceleration attained 1 ...
Background information for some of the proposed earthquake
... These irregularities are known to have a detrimental effect on building behaviour, some being worse than others. For instance, stiffness or weight irregularities and torsionally stiff irregular buildings can be dealt with by using a dynamic analysis. This goes a long way in overcoming the shortcomin ...
... These irregularities are known to have a detrimental effect on building behaviour, some being worse than others. For instance, stiffness or weight irregularities and torsionally stiff irregular buildings can be dealt with by using a dynamic analysis. This goes a long way in overcoming the shortcomin ...
A simulation-based approach to forecasting the next great San
... questions to ask are to what extent the hazard is posed by another such event and how can this hazard be estimated. The San Andreas fault is the major boundary between the Pacific and North American plates, which move past each other at an average rate of 49 mm!yr#1 (3), implying that to accumulate ...
... questions to ask are to what extent the hazard is posed by another such event and how can this hazard be estimated. The San Andreas fault is the major boundary between the Pacific and North American plates, which move past each other at an average rate of 49 mm!yr#1 (3), implying that to accumulate ...
Nature of Earthquakes - Elements of Seismology and Earthquake
... • Although the intensity of the the quake is measured in terms of energy released at the location of the ground fault, the critical effects on the given structures is determined by the ground movements at the location of the structure. The effect of these movements is affected mostly by the distance ...
... • Although the intensity of the the quake is measured in terms of energy released at the location of the ground fault, the critical effects on the given structures is determined by the ground movements at the location of the structure. The effect of these movements is affected mostly by the distance ...
Geological Survey of Denmark and Greenland Bulletin 31
... Two earthquake swarms have been detected in Greenland. One occurred on the island of Disko in August 2010, the other one was active from January 2008 to June 2009 near the South-East Greenland coast c. 200 km south of Tasiilaq. An earthquake swarm is defined as a series of earthquakes of similar mag ...
... Two earthquake swarms have been detected in Greenland. One occurred on the island of Disko in August 2010, the other one was active from January 2008 to June 2009 near the South-East Greenland coast c. 200 km south of Tasiilaq. An earthquake swarm is defined as a series of earthquakes of similar mag ...
Plate-wide deformation before the Sumatra
... SWS time-delays in Band-1 directions within the shear-wave window are sensitive to aspectratios (CRAMPIN 1999). Band-1 directions are the solid angle subtending 15º-to-45º to the vertical crack plane. Time-delays in Band-2 directions, ±(0º-to-15º) to the crack plane, are sensitive to crack density b ...
... SWS time-delays in Band-1 directions within the shear-wave window are sensitive to aspectratios (CRAMPIN 1999). Band-1 directions are the solid angle subtending 15º-to-45º to the vertical crack plane. Time-delays in Band-2 directions, ±(0º-to-15º) to the crack plane, are sensitive to crack density b ...
conditional probabilities of occurrence of moderate earthquakes in
... independent seismogenic source zones having individual characteristics. These source zones were chosen on the basis of Khattri et al. (1984) in which the whole country is divided into 24 source zones. Figure 1. shows the source zones considered in the study for seismic hazard assessment. The zone I ...
... independent seismogenic source zones having individual characteristics. These source zones were chosen on the basis of Khattri et al. (1984) in which the whole country is divided into 24 source zones. Figure 1. shows the source zones considered in the study for seismic hazard assessment. The zone I ...
Literature review of health impact post-earthquakes
... buildings was the leading cause of death in the lower seismetic earthquakes, whereas population density is the first cause in the higher seismetic zones.11 Post-disaster studies have also been reported as clinical specialty research articles, most of them following the 1976 Tangshan earthquake. One s ...
... buildings was the leading cause of death in the lower seismetic earthquakes, whereas population density is the first cause in the higher seismetic zones.11 Post-disaster studies have also been reported as clinical specialty research articles, most of them following the 1976 Tangshan earthquake. One s ...
Seismic interaction and delayed triggering along the North Anatolian
... extension is diffuse and is characterized by spatial clusters of smaller earthquakes and near‐continuous activity. We study the evolution of seismicity along the fault and in the clusters neighboring the fault before and after the two large earthquakes of 1999. We observe that the un‐ruptured sectio ...
... extension is diffuse and is characterized by spatial clusters of smaller earthquakes and near‐continuous activity. We study the evolution of seismicity along the fault and in the clusters neighboring the fault before and after the two large earthquakes of 1999. We observe that the un‐ruptured sectio ...
Earthquake Risk Assessment of Quetta
... throughout the history. One of these major earthquakes occurred on the early morning of 31 May 1935. The 1935 Quetta earthquake, with an estimated magnitude 7.7, was reported to last around three minutes. The epicentre of the earthquake was established to be 4-kilometres south-west of the town of Al ...
... throughout the history. One of these major earthquakes occurred on the early morning of 31 May 1935. The 1935 Quetta earthquake, with an estimated magnitude 7.7, was reported to last around three minutes. The epicentre of the earthquake was established to be 4-kilometres south-west of the town of Al ...
UGRC 144_Session 3
... • The science of earthquakes is seismology, "study of shaking" in scientific Greek. Earthquake energy comes from the stresses of plate tectonics. • As plates move, the rocks on their edges deform and take up strain until the weakest point, a fault, ruptures and releases the strain. • The occurrence ...
... • The science of earthquakes is seismology, "study of shaking" in scientific Greek. Earthquake energy comes from the stresses of plate tectonics. • As plates move, the rocks on their edges deform and take up strain until the weakest point, a fault, ruptures and releases the strain. • The occurrence ...
Chapter 4: Igneous Rocks: Product of Earth`s Internal Fire
... geologists have observed that friction on many rock surfaces decreases greatly once the surfaces start to slip. This effect, called velocity-weakening behavior, allows slip to accelerate and to release all the strain of the rock. Incorporating this rock behavior into computer simulations of fault sl ...
... geologists have observed that friction on many rock surfaces decreases greatly once the surfaces start to slip. This effect, called velocity-weakening behavior, allows slip to accelerate and to release all the strain of the rock. Incorporating this rock behavior into computer simulations of fault sl ...
Earthquake-induced Landslides in Colombia
... discontinuities dipping out of the slope face. Road and river cuts have shown to be very prone to this kind of slides, which are also seen to be induced in areas where previous intense rainfalls have fallen such as during the earthquake in 1827 for which intense rainfalls where reported the same day ...
... discontinuities dipping out of the slope face. Road and river cuts have shown to be very prone to this kind of slides, which are also seen to be induced in areas where previous intense rainfalls have fallen such as during the earthquake in 1827 for which intense rainfalls where reported the same day ...
IOSR Journal of Applied Geology and Geophysics (IOSR-JAGG)
... associated with earthquakes. But most of the catalogs are heterogeneous and inconsistent in space and time and usually incomplete for small events due to the limited sensitivity and coverage of the earth by seismographic networks. In India reliable information on instrumental magnitudes and location ...
... associated with earthquakes. But most of the catalogs are heterogeneous and inconsistent in space and time and usually incomplete for small events due to the limited sensitivity and coverage of the earth by seismographic networks. In India reliable information on instrumental magnitudes and location ...
Earthquake 1
... Whenever a significant earthquake occurs somewhere in the world, news media present reports about two issues; the size or magnitude of the quake, and the location of the epicenter. Magnitude is important in that it determines the destructiveness of the earthquake. Location of the epicenter helps us ...
... Whenever a significant earthquake occurs somewhere in the world, news media present reports about two issues; the size or magnitude of the quake, and the location of the epicenter. Magnitude is important in that it determines the destructiveness of the earthquake. Location of the epicenter helps us ...
A SITE AMPLIFICATION STUDY USING OBSERVED RECORDS AT
... Nakamura method is that Hb/Vb is unity or two and Vs/Vb is unity. Hb/Vb of microtremor becomes roughly unity perhaps because of surface waves’ dominance, whereas that of earthquake motions becomes a little bit larger and complicated perhaps because of mixture of body waves. Vertical transfer functio ...
... Nakamura method is that Hb/Vb is unity or two and Vs/Vb is unity. Hb/Vb of microtremor becomes roughly unity perhaps because of surface waves’ dominance, whereas that of earthquake motions becomes a little bit larger and complicated perhaps because of mixture of body waves. Vertical transfer functio ...
Research on the Earthquake Disaster Thematic Electric Map
... interaction of movement, and within a certain range caused by the earthquake ground dynamic phenomenon. The center location of the earthquake is called earthquake source. Vertical projection point on the ground is called the epicenter. The depth of the earthquake is the distance between the earthqua ...
... interaction of movement, and within a certain range caused by the earthquake ground dynamic phenomenon. The center location of the earthquake is called earthquake source. Vertical projection point on the ground is called the epicenter. The depth of the earthquake is the distance between the earthqua ...
N. Ambraseys, "Historical earthquakes in Jerusalem – A
... and consistent analysis of historical earthquake data and sets out an example for such a task. The results from the historical study of earthquakes will be of value to earth scientists and engineers only when historical information is converted into “numbers” representing epicentral location and mag ...
... and consistent analysis of historical earthquake data and sets out an example for such a task. The results from the historical study of earthquakes will be of value to earth scientists and engineers only when historical information is converted into “numbers” representing epicentral location and mag ...
Earthquake Disaster Simulation in Immersive 3D Environment
... dimensions. This selection depends upon immersive 3D system capabilities. A system which has projection system all around can very effectively produce the room effect. On the other hand if system is not fully immersive and is to be viewed by many people at the same time, it is more useful to show ou ...
... dimensions. This selection depends upon immersive 3D system capabilities. A system which has projection system all around can very effectively produce the room effect. On the other hand if system is not fully immersive and is to be viewed by many people at the same time, it is more useful to show ou ...
A Multivariate Non-Parametric Hazard Model for Earthquake
... (Özmen and Kocaefe, 1999; Kasap and Gürlen, 2003; Kalyoncuoğlu, 2007). In those, the time between earthquakes is assumed to be exponentially distributed. This assumes that the probability of observing an earthquake at any given time is independent of both the elapsed time since the last earthquak ...
... (Özmen and Kocaefe, 1999; Kasap and Gürlen, 2003; Kalyoncuoğlu, 2007). In those, the time between earthquakes is assumed to be exponentially distributed. This assumes that the probability of observing an earthquake at any given time is independent of both the elapsed time since the last earthquak ...
IOSR Journal of Mechanical and Civil Engineering (IOSR-JMCE) e-ISSN: 2278-1684,p-ISSN: 2320-334X,
... Abstract : Introduction of the flexible element at the base of a structure and at the same time ensuring damping is probably the best option for the seismic isolation technique. The device that meets such criteria is known as isolator. In this study incorporation of such base isolator in buildings h ...
... Abstract : Introduction of the flexible element at the base of a structure and at the same time ensuring damping is probably the best option for the seismic isolation technique. The device that meets such criteria is known as isolator. In this study incorporation of such base isolator in buildings h ...
Introduction to Earthquakes
... also on the distance from the epicenter — it varies from place to place with respect to the earthquake's epicenter. The modified Mercalli intensity scale is composed of 12 increasing levels of intensity that range from imperceptible shaking to catastrophic destruction. It does not have a mathematica ...
... also on the distance from the epicenter — it varies from place to place with respect to the earthquake's epicenter. The modified Mercalli intensity scale is composed of 12 increasing levels of intensity that range from imperceptible shaking to catastrophic destruction. It does not have a mathematica ...
Seismic Hazard Analysis of Low Seismic Regions, Visakhapatnam
... is isolated hills in between the main range and coast in NW-SE and E-W (Sriramdas 1963). Major folds are noticed at Mulaga konda in Srikakulam district and Kambala Konda in Visakhapatnam district. Both folds trend towards south east. The Eastern Ghats are traversed by number of faults. Faults are ex ...
... is isolated hills in between the main range and coast in NW-SE and E-W (Sriramdas 1963). Major folds are noticed at Mulaga konda in Srikakulam district and Kambala Konda in Visakhapatnam district. Both folds trend towards south east. The Eastern Ghats are traversed by number of faults. Faults are ex ...
2010 Canterbury earthquake
The 2010 Canterbury earthquake (also known as the Christchurch earthquake or Darfield earthquake) struck the South Island of New Zealand with a moment magnitude of 7.1 at 4:35 a.m. local time on 4 September, and had a maximum perceived intensity of X (Extreme) on the Mercalli Intensity Scale. Some damaging aftershocks followed the main event, the strongest of which was a magnitude 6.3 shock that occurred on 22 February 2011. Because this aftershock was centred very close to Christchurch, it was much more destructive and resulted in the deaths of 185 people, and was felt from Invercargill to Wellington.The main shock caused widespread damage and several power outages, particularly in the city of Christchurch, New Zealand's second largest city. Two residents were seriously injured, one by a collapsing chimney and a second by flying glass. One person died of a heart attack suffered during the quake, although this could not be directly linked to the earthquake. Mass fatalities were avoided partly due to there being few houses of unreinforced construction, although this was also aided by the quake occurring during the night when most people were off the street.The earthquake's epicentre was 40 kilometres (25 mi) west of Christchurch, near the town of Darfield. The hypocentre was at a shallow depth of 10 km. A foreshock of roughly magnitude 5.8 hit five seconds before the main quake, and strong aftershocks have been reported, up to magnitude 6.3.The initial quake lasted about 40 seconds, and was felt widely across the South Island, and in the North Island as far north as New Plymouth. As the epicentre was on land away from the coast, no tsunami occurred.The National Crisis Management Centre in the basement of the Beehive in Wellington was activated, and Civil Defence declared a state of emergency for Christchurch, the Selwyn District, and the Waimakariri District, while Selwyn District, Waimakariri and Timaru activated their emergency operation centres. Initially, a curfew was established for parts of Christchurch Central City from 7:00 pm to 7:00 am in response to the earthquake. The New Zealand Army was deployed to the worst affected areas in Canterbury.Claims from the earthquake were confirmed at being between $2.75 and $3.5 billion NZD.