Central US earthquake catalog for hazard maps of Memphis
... of the smaller earthquakes, only maximum intensity was available, and this was converted directly to mbLg with a look-up table of unspeci®ed origin (Nuttli, 1974). Absent an isoseismal map, if magnitudes from both the felt area and the maximum intensity were available, Nuttli (1979) used the larger. ...
... of the smaller earthquakes, only maximum intensity was available, and this was converted directly to mbLg with a look-up table of unspeci®ed origin (Nuttli, 1974). Absent an isoseismal map, if magnitudes from both the felt area and the maximum intensity were available, Nuttli (1979) used the larger. ...
Subducted seafloor relief stops rupture in South American great
... subduction earthquakes could be forced by along-strike variation of properties of the ...
... subduction earthquakes could be forced by along-strike variation of properties of the ...
Hypocenter depths of large interplate earthquakes and their relation
... area and propagates upward. Sibson [2] pointed out the same thing for large inland earthquakes in the United States. These observational facts may indicate that in many cases shear strength is largest at the bottom of the seismogenic zone, below which stable sliding or shear £ow is thought to take p ...
... area and propagates upward. Sibson [2] pointed out the same thing for large inland earthquakes in the United States. These observational facts may indicate that in many cases shear strength is largest at the bottom of the seismogenic zone, below which stable sliding or shear £ow is thought to take p ...
P from the 2011 Tohoku-Oki earthquake Masatoshi Miyazawa
... earthquakes (e.g., Miyazawa et al., 2005; Fischer et al., 2008a, b) because P-wave arrivals cause high-frequency transient stress changes and it is difficult to identify a local event using a high-pass filtering technique, particularly if the embedded event is minor. In the case of the 2011 Tohoku-O ...
... earthquakes (e.g., Miyazawa et al., 2005; Fischer et al., 2008a, b) because P-wave arrivals cause high-frequency transient stress changes and it is difficult to identify a local event using a high-pass filtering technique, particularly if the embedded event is minor. In the case of the 2011 Tohoku-O ...
Using the AS-1 Seismograph and AmaSeis
... analysis of seismograms, retrieving information from the internet and performing simple calculations. Continuous or short duration (several weeks or months) recording of earthquakes with an educational seismograph is an excellent component of an in-depth science experience that includes record keepi ...
... analysis of seismograms, retrieving information from the internet and performing simple calculations. Continuous or short duration (several weeks or months) recording of earthquakes with an educational seismograph is an excellent component of an in-depth science experience that includes record keepi ...
Earthquake Disaster Guidelines - National Disaster Management
... magnitude of effects of any disaster; evacuation, rescue and relief; and rehabilitation and reconstruction. ...
... magnitude of effects of any disaster; evacuation, rescue and relief; and rehabilitation and reconstruction. ...
Mapping spatial variability of the frequency
... synthetic catalog of 5000 events with a b-value of 1.0. For sample sizes smaller than 50, the 5% and 95 % confidence regions are separated by more than 0.5 units, suggesting that only very large differences in b can be established with significance. For N = 100, this difference is about 0.25, and fo ...
... synthetic catalog of 5000 events with a b-value of 1.0. For sample sizes smaller than 50, the 5% and 95 % confidence regions are separated by more than 0.5 units, suggesting that only very large differences in b can be established with significance. For N = 100, this difference is about 0.25, and fo ...
Repeating earthquakes in the Yellowstone volcanic field
... chosen criterion of P and S waveforms similarity, a process named clustering by Everitt (1974). Fig. 1B represents our clustering scheme with an example of an earthquake dataset. To have both the P- and the S-waves from a single event, we extracted five-second long waveforms from the vertical compone ...
... chosen criterion of P and S waveforms similarity, a process named clustering by Everitt (1974). Fig. 1B represents our clustering scheme with an example of an earthquake dataset. To have both the P- and the S-waves from a single event, we extracted five-second long waveforms from the vertical compone ...
Anomalous soil radon fluctuations – signal of earthquakes in Nepal
... gas and reported anomalous radon concentration changes prior to the strong earthquake of magnitude M8.0 that occurred at Tonankai. Since then, the study of radon anomaly in sub-soil gas, thermal spring and ground water has been undertaken significantly by researchers all around the globe. Fleischer a ...
... gas and reported anomalous radon concentration changes prior to the strong earthquake of magnitude M8.0 that occurred at Tonankai. Since then, the study of radon anomaly in sub-soil gas, thermal spring and ground water has been undertaken significantly by researchers all around the globe. Fleischer a ...
Seismotectonic modeling of the repeating Katsuhiko Ishibashi
... 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 to earthquakes, there has been little interest in modeli ...
... 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 to earthquakes, there has been little interest in modeli ...
OBSERVED BEHAVIOR OF SEISMICALLY ISOLATED BUILDINGS
... earthquake recordings. In the case of one building, the inferred isolator stiffness and damping during several earthquakes is compared with experimental results. Spectral displacements of the ground motion at the effective fundamental period of the seismically isolated building are found to correlat ...
... earthquake recordings. In the case of one building, the inferred isolator stiffness and damping during several earthquakes is compared with experimental results. Spectral displacements of the ground motion at the effective fundamental period of the seismically isolated building are found to correlat ...
SOFT-STOREY BEHAVIOUR IN AN EARTHQUAKE and
... other storeys spoils the perpendicular symmetry of the construction, and if this fact was not taken into consideration, it causes the construction to be affected by the quake. Because the columns in this part are forced by the quake more than the ones in the other parts of the building. studies cond ...
... other storeys spoils the perpendicular symmetry of the construction, and if this fact was not taken into consideration, it causes the construction to be affected by the quake. Because the columns in this part are forced by the quake more than the ones in the other parts of the building. studies cond ...
Are earthquakes predictable? - San Andreas UCLA Seismic
... a pattern-recognition technique. It is not clear whether such TIPs in various regions have the same probability, nor what the level of the increased probability is compared to normal seismicity. Forecast accuracy can be improved if the probability value is indicated for selected zones of interest. A ...
... a pattern-recognition technique. It is not clear whether such TIPs in various regions have the same probability, nor what the level of the increased probability is compared to normal seismicity. Forecast accuracy can be improved if the probability value is indicated for selected zones of interest. A ...
geol_15_patton_fall_..
... 19. (20 pts.) Show by a drawing how a subduction zone behaves both during and between earthquakes. Explain in a few sentences what your drawing depicts. ...
... 19. (20 pts.) Show by a drawing how a subduction zone behaves both during and between earthquakes. Explain in a few sentences what your drawing depicts. ...
report
... abruptly changed course upstream of the Reelfoot scarp around the same time that 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 straighte ...
... abruptly changed course upstream of the Reelfoot scarp around the same time that 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 straighte ...
KeyGraph as Risk Explorer in Earthquake-Sequence
... of past earthquakes ± (Okada, 1993), can approximately estimate the risk, that is, whether we have a long time before the next earthquake will occur at the fault. Such a direct `land-mining' is inefficient and expensive and, more significantly, can not distinguish near-future (within a few decades) ...
... of past earthquakes ± (Okada, 1993), can approximately estimate the risk, that is, whether we have a long time before the next earthquake will occur at the fault. Such a direct `land-mining' is inefficient and expensive and, more significantly, can not distinguish near-future (within a few decades) ...
Benefit in the wake of disaster: Long
... Bertrand 1993; Skidmore and Toya 2002 and 2007; Kahn 2005; Loayza et al. 2012; Noy 2009; Strobl 2012) have generally examined the largest disasters and provided some evidence that their negative short-run effects depend on the level of development and structure of the economy and are more pronounce ...
... Bertrand 1993; Skidmore and Toya 2002 and 2007; Kahn 2005; Loayza et al. 2012; Noy 2009; Strobl 2012) have generally examined the largest disasters and provided some evidence that their negative short-run effects depend on the level of development and structure of the economy and are more pronounce ...
Earthquake geotechnical engineering practice
... and lateral spreading are significant earthquake hazards. The design of foundations, retaining structures, roads, and buried infrastructure to resist earthquake shaking and ground failure requires special consideration. The high seismic hazard in New Zealand and profound relevance of earthquake geot ...
... and lateral spreading are significant earthquake hazards. The design of foundations, retaining structures, roads, and buried infrastructure to resist earthquake shaking and ground failure requires special consideration. The high seismic hazard in New Zealand and profound relevance of earthquake geot ...
Earthquake forecasting and its verification
... the first is based on empirical observations of precursory changes. Examples include precursory seismic activity, precursory ground motions, and many others. The second approach is based on statistical patterns of seismicity. Neither approach has been able to provide reliable short-term forecasts (d ...
... the first is based on empirical observations of precursory changes. Examples include precursory seismic activity, precursory ground motions, and many others. The second approach is based on statistical patterns of seismicity. Neither approach has been able to provide reliable short-term forecasts (d ...
Creeping along the Ismetpasa section of the North Anatolian fault
... displaced by about 1.5 m during the 1944 earthquake. In the following 6 years, the fault at same site manifested aseismic surface slip of about 0.3 m before rupturing again during the 1951 earthquake [7]. Detailed surface slip distributions of these earthquakes are not known. However, it is thought ...
... displaced by about 1.5 m during the 1944 earthquake. In the following 6 years, the fault at same site manifested aseismic surface slip of about 0.3 m before rupturing again during the 1951 earthquake [7]. Detailed surface slip distributions of these earthquakes are not known. However, it is thought ...
Earthquake Hazards and Large Dams in Western China
... By constructing more than 130 large dams in a region of known high seismicity, China is embarking on a major experiment with potentially disastrous consequences for its economy and its citizens. A comparison of large dam locations and seismic hazard zones1 for dams that are built, under construction ...
... By constructing more than 130 large dams in a region of known high seismicity, China is embarking on a major experiment with potentially disastrous consequences for its economy and its citizens. A comparison of large dam locations and seismic hazard zones1 for dams that are built, under construction ...
2008 Sichuan earthquake
The 2008 Sichuan earthquake or the Great Sichuan earthquake, measured at 8.0 Msand 7.9 Mw, and occurred at 02:28:01 PM China Standard Time at epicenter (06:28:01 UTC)on Monday, May 12 in Sichuan province, killed 69,197 people and left 18,222 missing.It is also known as the Wenchuan earthquake (Chinese: 汶川大地震; pinyin: Wènchuān dà dìzhèn; literally: ""Great Wenchuan earthquake""), after the location of the earthquake's epicenter, Wenchuan County, Sichuan. The epicenter was 80 kilometres (50 mi) west-northwest of Chengdu, the provincial capital, with a focal depth of 19 km (12 mi).The earthquake was also felt in nearby countries and as far away as both Beijing and Shanghai—1,500 km (930 mi) and 1,700 km (1,060 mi) away—where office buildings swayed with the tremor. Strong aftershocks, some exceeding magnitude 6, continued to hit the area even months after the main quake, causing new casualties and damage.Official figures (as of July 21, 2008 12:00 CST) stated that 69,197 were confirmed dead, including 68,636 in Sichuan province, and 374,176 injured, with 18,222 listed as missing. The earthquake left about 4.8 million people homeless, though the number could be as high as 11 million. Approximately 15 million people lived in the affected area. It was the deadliest earthquake to hit China since the 1976 Tangshan earthquake, which killed at least 240,000 people, and the strongest in the country since the 1950 Chayu earthquake, which registered at 8.5 on the Richter magnitude scale. It is the 21st deadliest earthquake of all time. On November 6, 2008, the central government announced that it would spend 1 trillion RMB (about US $146.5 billion) over the next three years to rebuild areas ravaged by the earthquake, as part of the Chinese economic stimulus program.