Seismicity perspectives - School of Earth and Environment
... 44‐station seismic network, and interpret them in the growing body of structural and geodetic studies from this region, and of models of rift zone dike intrusions worldwide. [6] In this paper we compare and contrast the detailed temporal and spatial distribution of intense seismic activity from 7 of ...
... 44‐station seismic network, and interpret them in the growing body of structural and geodetic studies from this region, and of models of rift zone dike intrusions worldwide. [6] In this paper we compare and contrast the detailed temporal and spatial distribution of intense seismic activity from 7 of ...
Juan de Fuca slab geometry and its relation to Wadati
... (1984–2008) of relocated NCSS catalog earthquakes. Specifically, we retained earthquakes recorded at a minimum of 6 stations, with locations having a maximum RMS of 0.5 s, between depths of 0–150 km and ranging in magnitude from 0 to 7+. In addition, we eliminated events whose formal vertical (depth ...
... (1984–2008) of relocated NCSS catalog earthquakes. Specifically, we retained earthquakes recorded at a minimum of 6 stations, with locations having a maximum RMS of 0.5 s, between depths of 0–150 km and ranging in magnitude from 0 to 7+. In addition, we eliminated events whose formal vertical (depth ...
Tohoku Chapter, Architectural Institute of Japan Quick
... the damage caused by tsunamis. He was confined in his school from immediately after the earthquake on March 11 to noon on March 12. Mr. Ishioka sent the following message; Two weeks have passed since the tsunami earthquake. During this period, I was involved in contacting all students and staff of t ...
... the damage caused by tsunamis. He was confined in his school from immediately after the earthquake on March 11 to noon on March 12. Mr. Ishioka sent the following message; Two weeks have passed since the tsunami earthquake. During this period, I was involved in contacting all students and staff of t ...
An alternative mechanism of pile failure in
... 1. Before the superstructure starts oscillating, the piles may be forced to follow the soil motion, depending on the flexural rigidity (EI) of the pile. Here the soil and pile may take part in kinematic interplay and the motion of the pile may differ substantially from the free field motion. This ma ...
... 1. Before the superstructure starts oscillating, the piles may be forced to follow the soil motion, depending on the flexural rigidity (EI) of the pile. Here the soil and pile may take part in kinematic interplay and the motion of the pile may differ substantially from the free field motion. This ma ...
Historical tsunami in the Makran Subduction Zone off
... of the eastern, Page et al. (1979) believed that the east end is more likely to experience a large earthquake than the west end. Byrne et al. (1992) reported seven large earthquakes in the MSZ, of which six may have ruptured the plate boundary in four different segments. According to this report, th ...
... of the eastern, Page et al. (1979) believed that the east end is more likely to experience a large earthquake than the west end. Byrne et al. (1992) reported seven large earthquakes in the MSZ, of which six may have ruptured the plate boundary in four different segments. According to this report, th ...
Tsunami - Library Junction
... Warning System and most regularly practice evacuation and other procedures. In Japan, such preparation is mandatory for government, local authorities, emergency services and the population. ...
... Warning System and most regularly practice evacuation and other procedures. In Japan, such preparation is mandatory for government, local authorities, emergency services and the population. ...
Landslides, earthquakes, and erosion
... introduced a landslide-event magnitude scale m L=log(N LT), with N LT the total number of landslides associated with the landslide event, in analogy to the Richter earthquake magnitude scale. In this paper, we use this general landslide distribution to (a) relate landslide inventories to erosion rat ...
... introduced a landslide-event magnitude scale m L=log(N LT), with N LT the total number of landslides associated with the landslide event, in analogy to the Richter earthquake magnitude scale. In this paper, we use this general landslide distribution to (a) relate landslide inventories to erosion rat ...
Present-day crustal stress field in Greece inferred from regional
... Figure 2 shows the distribution of these earthquakes in the form of event locations and their corresponding beach balls. It can be seen that the distribution is clearly not homogeneous with certain areas such as northern Greece, the Cyclades, and onshore Crete Island, lacking large enough earthquake ...
... Figure 2 shows the distribution of these earthquakes in the form of event locations and their corresponding beach balls. It can be seen that the distribution is clearly not homogeneous with certain areas such as northern Greece, the Cyclades, and onshore Crete Island, lacking large enough earthquake ...
Seismic analysis of structures connected with friction dampers
... A numerical example is considered to study the influence of slip force on the seismic responses of two adjacent connected SDOF structures under various earthquake excitations. The earthquake time histories selected to examine seismic behavior of the two structures are: E00W component of Kobe, 1995, ...
... A numerical example is considered to study the influence of slip force on the seismic responses of two adjacent connected SDOF structures under various earthquake excitations. The earthquake time histories selected to examine seismic behavior of the two structures are: E00W component of Kobe, 1995, ...
Seismic Analysis of Fixed Based and Base Isolated Building Structures
... earthquake, which may be problematic in some structures, like hospitals, which need to remain functional during the earthquake. Non-structural components are sensitive to large floor accelerations, velocities, and displacements. When a building is subjected to an earthquake ground motion, the buildi ...
... earthquake, which may be problematic in some structures, like hospitals, which need to remain functional during the earthquake. Non-structural components are sensitive to large floor accelerations, velocities, and displacements. When a building is subjected to an earthquake ground motion, the buildi ...
Moment Magnitude Estimates for Earthquakes in the Greek Region
... Mediterranean region since 1997 using a variation of the CMT algorithm that inverts the first-arriving surface waves with a low-pass cutoff period of 40–60 s (Pondrelli et al., 2002, 2004, 2011). The Swiss seismological service group in ETH was calculating deviatoric moment tensors for events in the ...
... Mediterranean region since 1997 using a variation of the CMT algorithm that inverts the first-arriving surface waves with a low-pass cutoff period of 40–60 s (Pondrelli et al., 2002, 2004, 2011). The Swiss seismological service group in ETH was calculating deviatoric moment tensors for events in the ...
Deliverable 3.2 - version 2 - Website for the dissemination of long
... complemented with the descriptions of the steps that the SHARE catalogue underwent since its first release in April 2011, which are briefly summarized in the following. 1. SHEEC was first released on 13 April 2011, as deliverable D3.2 of the Project. The catalogue was made available as two separate ...
... complemented with the descriptions of the steps that the SHARE catalogue underwent since its first release in April 2011, which are briefly summarized in the following. 1. SHEEC was first released on 13 April 2011, as deliverable D3.2 of the Project. The catalogue was made available as two separate ...
Canterbury Earthquakes – Impact on the Ministry
... this report is to review performance of school buildings in the Canterbury earthquake sequence. The intent is to assist the Ministry of Education in improving the resilience of their current and future school buildings in Christchurch and throughout New Zealand. The post-earthquake review sampled 70 ...
... this report is to review performance of school buildings in the Canterbury earthquake sequence. The intent is to assist the Ministry of Education in improving the resilience of their current and future school buildings in Christchurch and throughout New Zealand. The post-earthquake review sampled 70 ...
Thesis_combine - The Nevada Seismological Laboratory
... similar to Miocene rocks (Farmer et al., 2002), not from delamination in opinion and results. Also, there is no strong evidence for these Pliocene, K-rocks north of 38 N, but the root was most likely root removed along the entire the Sierra Nevada (Jones et al., 2004) because all Sierras have been u ...
... similar to Miocene rocks (Farmer et al., 2002), not from delamination in opinion and results. Also, there is no strong evidence for these Pliocene, K-rocks north of 38 N, but the root was most likely root removed along the entire the Sierra Nevada (Jones et al., 2004) because all Sierras have been u ...
Heimgartner_thesis_revise - The Nevada Seismological
... When picking at distance greater than 400 km from the source, with this type of experiment, it can be difficult to distinguish between Pn refracted arrivals and noise. By having more than one record from similar events, the first arrivals are more easily distinguished. While there are some discrepan ...
... When picking at distance greater than 400 km from the source, with this type of experiment, it can be difficult to distinguish between Pn refracted arrivals and noise. By having more than one record from similar events, the first arrivals are more easily distinguished. While there are some discrepan ...
Spatiotemporal relationships between earthquakes of the Mid
... The seismicity of the mid Atlantic Ridge (MAR) was compared in space and time with the seismicity along the Atlantic continental margins of Europe, Africa, North America, the Carribean and South America in a bid to appraise the level of influence of the ridge push force at the MAR on the Atlantic co ...
... The seismicity of the mid Atlantic Ridge (MAR) was compared in space and time with the seismicity along the Atlantic continental margins of Europe, Africa, North America, the Carribean and South America in a bid to appraise the level of influence of the ridge push force at the MAR on the Atlantic co ...
comparison of earthquake locations determined with
... tripartite arrays and to look for evidence of zones of abnormally high or low velocity in a region of complex crustal structure. Ten vertical and two horizontal seismometers were operated on the south flank of Kilauea within the seismic network of the Hawaiian Volcano Observatory. A number of combin ...
... tripartite arrays and to look for evidence of zones of abnormally high or low velocity in a region of complex crustal structure. Ten vertical and two horizontal seismometers were operated on the south flank of Kilauea within the seismic network of the Hawaiian Volcano Observatory. A number of combin ...
ÔØ Å ÒÙ× Ö ÔØ - uO Research
... widespread episodic slow slip events that occur downdip of the seismogenic zone. Slow slip events (sometimes referred to as slow earthquakes) had been recognized for some time in the literature using strainmeters (Linde et al., 1996) and seismometers (e.g., Kanamori and Stewart, 1979), although thei ...
... widespread episodic slow slip events that occur downdip of the seismogenic zone. Slow slip events (sometimes referred to as slow earthquakes) had been recognized for some time in the literature using strainmeters (Linde et al., 1996) and seismometers (e.g., Kanamori and Stewart, 1979), although thei ...
Structure of the Managua graben, Nicaragua, from
... into open folds with approximately NW-SE - trending, horizontal axes and is unconformably overlain by unfolded, sandy-conglomeratic and calcareous, older Pliocene and andesitic to rhyodacitic younger Pliocene (Andean-tectogene; Dengo, 1985). Thrust- and reverse faults indicate NE- to E directed tran ...
... into open folds with approximately NW-SE - trending, horizontal axes and is unconformably overlain by unfolded, sandy-conglomeratic and calcareous, older Pliocene and andesitic to rhyodacitic younger Pliocene (Andean-tectogene; Dengo, 1985). Thrust- and reverse faults indicate NE- to E directed tran ...
Test of Strain Behavior Model with Radon Anomaly in Seismogenic
... can help us understanding the local dynamics of the subsoil radon field controlled by variations in the stress-strain state in tectonically un compacted regions of the crust was proposed in [15,16]. In this paper, we derive a probabilistic bayesian framework between emanation fields and the dynamics ...
... can help us understanding the local dynamics of the subsoil radon field controlled by variations in the stress-strain state in tectonically un compacted regions of the crust was proposed in [15,16]. In this paper, we derive a probabilistic bayesian framework between emanation fields and the dynamics ...
Seismic Response Control of Benchmark Building Using - I-asem
... buildings under earthquake excitation. This displacement can be reduced by using different control strategies such as passive, active, semi-active or combinations thereof. In this paper, the full scale analytical second generation 20-storey benchmark building designed by Brandow and Johnston Associa ...
... buildings under earthquake excitation. This displacement can be reduced by using different control strategies such as passive, active, semi-active or combinations thereof. In this paper, the full scale analytical second generation 20-storey benchmark building designed by Brandow and Johnston Associa ...
Report on the expected PGV and PGA values for
... Since this research is focused on shallow events, < 5 km depth, of magnitude 3.5 < M < 5, GMPEs should preferably include at least this magnitude range. Although recently there is a tendency to include smaller magnitudes in the GMPEs, application of this criterion alone limits the number of availabl ...
... Since this research is focused on shallow events, < 5 km depth, of magnitude 3.5 < M < 5, GMPEs should preferably include at least this magnitude range. Although recently there is a tendency to include smaller magnitudes in the GMPEs, application of this criterion alone limits the number of availabl ...
The Effect of P-wave Propagation on the Seismic Behavior of Steel
... by Roudsari et al. to investigate the seismic behavior of GRP pipelines. Roudsari et al. embarked on the laboratorial analysis of the pipe as well as the numerical analysis of the behavior of GRP pipeline in sandy and clayey soil. The purpose of this article is to investigate the effect of axial P-w ...
... by Roudsari et al. to investigate the seismic behavior of GRP pipelines. Roudsari et al. embarked on the laboratorial analysis of the pipe as well as the numerical analysis of the behavior of GRP pipeline in sandy and clayey soil. The purpose of this article is to investigate the effect of axial P-w ...
Tectonics - Teesdale School
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Physical modeling of the formation and evolution of
... Received 4 March 1996; accepted 30 September 1996 ...
... Received 4 March 1996; accepted 30 September 1996 ...
1988 Armenian earthquake
The 1988 Armenian earthquake, also known as the Spitak earthquake (Armenian: Սպիտակի երկրաշարժ Spitaki yerkrašarž) occurred in the northern region of Armenia (then part of the Soviet Union) on Wednesday, December 7, 1988 at 11:41 local time (07:41 UTC). The earthquake measured 6.8 on the surface wave magnitude scale and had a maximum perceived intensity of X (Devastating) on the Medvedev–Sponheuer–Karnik scale. The region that the earthquake occurred is vulnerable to occasional large and destructive earthquakes and is part of a larger active seismic belt that stretches from the Alps to the Himalayas. Activity in the area is associated with tectonic plate boundary interaction and the source of the event was a slip of a thrust fault just to the north of Spitak.Seismologists thoroughly studied the effects of the Spitak event, including the mainshock and aftershock fault rupture mechanisms and were on site setting up temporary seismometers before the end of 1988. Earthquake engineering experts scrutinized building construction styles and found fault in the poorly constructed apartments and other buildings that were built during the Era of Stagnation under the rule of Leonid Brezhnev. The cities of Spitak, Leninakan (Gyumri), and Kirovakan (Vanadzor) were greatly affected with large losses of life and devastating effects to buildings and other structures. A number of the smaller outlying villages away from the larger population centers were also severely affected.Despite the tensions of the Cold War, Soviet leader Mikhail Gorbachev formally asked the United States for humanitarian help within a few days of the earthquake, the first such request since World War II. One hundred and thirteen countries sent substantial amounts of humanitarian aid to the Soviet Union in the form of rescue equipment, search teams and medical supplies, but private donations and assistance from non-governmental organizations also had a large part of the international effort. While transporting some of these supplies to the region, a Soviet aircraft carrying 78 relief workers from Azerbaijan and a transport plane from Yugoslavia were both destroyed in separate incidents. In support of the relief effort, recording artists united to produce several music-related contributions for the victims of the quake. A song was produced by a duo of French composers (including Charles Aznavour) and a studio album that featured songs donated by mainstream rock bands was released from the Rock Aid Armenia effort by the British music industry.