The depth effect of earthquakes on tsunami
... seismic area of 200 km or more, calculations according to the two different formulas of Okada agree rather well. For shallow-focus earthquakes the approach of point area does not work, as noted by Bolshakova and Nosov (2011). By the calculations according to Okada’s “exact” formula, as well as his a ...
... seismic area of 200 km or more, calculations according to the two different formulas of Okada agree rather well. For shallow-focus earthquakes the approach of point area does not work, as noted by Bolshakova and Nosov (2011). By the calculations according to Okada’s “exact” formula, as well as his a ...
evaluation of ground motion intensities from induced earthquakes
... There has recently been a significant increase in the occurrence of earthquakes in the Central and Eastern United States (CEUS), which is believed to be a result of anthropogenic activities. This is a cause for concern due to the potential damage that shaking from these earthquakes could cause. With ...
... There has recently been a significant increase in the occurrence of earthquakes in the Central and Eastern United States (CEUS), which is believed to be a result of anthropogenic activities. This is a cause for concern due to the potential damage that shaking from these earthquakes could cause. With ...
MEASUREMENT OF SOLUBLE RADON IN JOOSHAN SPA (SE OF
... [11]. All active deformations and tectonic movements are well documented in eastern and southeastern part of Iran with the development of relatively rigid blocks between major strike-slip faults and thrust faults [15]. Under focus on such geological features of case study, this hypothesis that when ...
... [11]. All active deformations and tectonic movements are well documented in eastern and southeastern part of Iran with the development of relatively rigid blocks between major strike-slip faults and thrust faults [15]. Under focus on such geological features of case study, this hypothesis that when ...
Active tectonic blocks and strong earthquakes in the continent of China
... concordant fashion in the frame of continental scale tectonics. Tectonic activity in the interior of blocks shows two distinctive patterns. One is relatively stable with little or no tectonic activities. The other shows some tectonic activities, but nothing is comparable with that along the boundari ...
... concordant fashion in the frame of continental scale tectonics. Tectonic activity in the interior of blocks shows two distinctive patterns. One is relatively stable with little or no tectonic activities. The other shows some tectonic activities, but nothing is comparable with that along the boundari ...
Relocation of large intermediate-depth earthquakes in the Vrancea
... concentrated in an area of 20 × 85 km in the Vrancea region. Based on the regularity of past large earthquakes, the predominant focal mechanism is of a thrust type with a NWSE compressional axis. Since no plate boundary is present, a paleo-subduction is assumed in the zone (e.g. Fuchs et al., 1979; ...
... concentrated in an area of 20 × 85 km in the Vrancea region. Based on the regularity of past large earthquakes, the predominant focal mechanism is of a thrust type with a NWSE compressional axis. Since no plate boundary is present, a paleo-subduction is assumed in the zone (e.g. Fuchs et al., 1979; ...
How might infinitesimal strain analysis be used as a
... Figure OP.1. Tectonic setting for the Olympic Peninsula. The North American–Juan De Fuca Plate boundary (trench of the Cascadia Subduction zone) is the thin yellow line on the left side of the figure. ...
... Figure OP.1. Tectonic setting for the Olympic Peninsula. The North American–Juan De Fuca Plate boundary (trench of the Cascadia Subduction zone) is the thin yellow line on the left side of the figure. ...
How might infinitesimal strain analysis be used as a component of
... Now that you have calculated the ongoing strain in this region and considered the related tectonic setting, it is time to consider the societal impacts of a large earthquake resulting from this plate motion and strain. Search HAZUS-MH: Earthquake Event Report for Provo Segment Mw 7.2 ShakeMap Scenar ...
... Now that you have calculated the ongoing strain in this region and considered the related tectonic setting, it is time to consider the societal impacts of a large earthquake resulting from this plate motion and strain. Search HAZUS-MH: Earthquake Event Report for Provo Segment Mw 7.2 ShakeMap Scenar ...
Post-earthquake ignition vulnerability assessment of
... fuel available (combustible materials), the actual construction material, water capacity, firefighting capabilities, an inadequate number of firebreaks, the direction and speed of wind, any of which can turn these ignitions into large urban conflagrations. All of these effects can cause many destroy ...
... fuel available (combustible materials), the actual construction material, water capacity, firefighting capabilities, an inadequate number of firebreaks, the direction and speed of wind, any of which can turn these ignitions into large urban conflagrations. All of these effects can cause many destroy ...
Ground-shaking mapping for a scenario earthquake considering
... In order to examine the correlation of the shear-wave velocity with the geomorphological conditions in the Kanto and Hanshin areas, soil data on shear-wave velocity for these two areas are collected. The total number of soil data compiled was 478 (the number of PS logging and that of boring data is ...
... In order to examine the correlation of the shear-wave velocity with the geomorphological conditions in the Kanto and Hanshin areas, soil data on shear-wave velocity for these two areas are collected. The total number of soil data compiled was 478 (the number of PS logging and that of boring data is ...
Global Strategy of JCI on ISO Standard for Seismic Evaluation and
... Keywords: seismic retrofit; seismic assessment; ISO; The seismic index of “Is” INTRODUCTION 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 th ...
... Keywords: seismic retrofit; seismic assessment; ISO; The seismic index of “Is” INTRODUCTION 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 th ...
Toward a Time-Dependent Probabilistic Seismic Hazard Analysis for
... The state of Alaska rests at the northern end of the convergent margin between the North American and Pacific plates. At a subduction rate of roughly 50 mm/yr [DeMets and Dixon, 1999], Alaska includes the most abundant seismicity and highest rates of deformation in North America. Subduction gives wa ...
... The state of Alaska rests at the northern end of the convergent margin between the North American and Pacific plates. At a subduction rate of roughly 50 mm/yr [DeMets and Dixon, 1999], Alaska includes the most abundant seismicity and highest rates of deformation in North America. Subduction gives wa ...
Chapter 01 - Earthquakes
... The amount of fault slip that occurs in an earthquake relates to the area of the fault rupture, which, for simple fault geometries, can be estimated from the fault subsurface rupture length and downdip rupture width (Figure 3A). The latter is limited by the thickness of the brittle crust and the di ...
... The amount of fault slip that occurs in an earthquake relates to the area of the fault rupture, which, for simple fault geometries, can be estimated from the fault subsurface rupture length and downdip rupture width (Figure 3A). The latter is limited by the thickness of the brittle crust and the di ...
Long-term creep-rate changes and their causes
... creepmeters that extend along about 30 km of the fault. Two of them (CWC3 and CWN1) are nearly co-located, separated by only 30 meters within a winery building. Figure 1 also shows the locations of a number of earthquakes that occurred on the San Andreas fault between 1960 and 2003. The largest of t ...
... creepmeters that extend along about 30 km of the fault. Two of them (CWC3 and CWN1) are nearly co-located, separated by only 30 meters within a winery building. Figure 1 also shows the locations of a number of earthquakes that occurred on the San Andreas fault between 1960 and 2003. The largest of t ...
Evaluating earthquake predictions and earthquake
... focal mechanism, or some other measurable characteristic. What is essential is that, after the end time of the prediction, one must be able to determine objectively whether or not the prediction was successful. Making this determination should not require any interpretation. To state the preceding i ...
... focal mechanism, or some other measurable characteristic. What is essential is that, after the end time of the prediction, one must be able to determine objectively whether or not the prediction was successful. Making this determination should not require any interpretation. To state the preceding i ...
Research on the Seismic Activity of the Lower Yangtze River
... initially outlines the potential danger zone． ...
... initially outlines the potential danger zone． ...
Ground uplift detected by precise leveling in the Ontake earthquake... area, central Japan in 2002–2004
... The point pressure sources are estimated from the ground 1000 m above sea level, inflation occurs at depths of about uplift detected by precise leveling using the Mogi solution 1–2 km below sea level. A number of features may be related to the observed up(Mogi, 1958). As benchmarks are arranged almo ...
... The point pressure sources are estimated from the ground 1000 m above sea level, inflation occurs at depths of about uplift detected by precise leveling using the Mogi solution 1–2 km below sea level. A number of features may be related to the observed up(Mogi, 1958). As benchmarks are arranged almo ...
Inferring fault strength from earthquake rupture properties and the tectonic
... explanation for this behavior can be argued as follows. Consider a rupture that has saturated at the seismogenic width and is constrained to propagate along strike only. As the rupture arrives at an un-slipped section, the slip associated with the initial stress drop at the rupture front determines ...
... explanation for this behavior can be argued as follows. Consider a rupture that has saturated at the seismogenic width and is constrained to propagate along strike only. As the rupture arrives at an un-slipped section, the slip associated with the initial stress drop at the rupture front determines ...
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.