Entire paper as a 2 MB file
... magnitudes decrease from about 7.1 to about 6.3 with increasing relative plate velocity. Oceanic transform faults also show a quasi-exponential decrease in coupled lithosphere thickness (from about 3000 m to about 300 m) as relative plate velocity increases. Perhaps this is due to formation of serpe ...
... magnitudes decrease from about 7.1 to about 6.3 with increasing relative plate velocity. Oceanic transform faults also show a quasi-exponential decrease in coupled lithosphere thickness (from about 3000 m to about 300 m) as relative plate velocity increases. Perhaps this is due to formation of serpe ...
Geochemistry, Geophysics, Geosystems - ePrints Soton
... evolution of the sequence using the continuous seismic record from the nearest permanent seismic station to Kivu (supplemental information Figure S1, MBAR located 250 km from the main shock) during October 2002. During 5–29 October 2002, we compute local magnitude (ML) of 88 well-recorded earthquak ...
... evolution of the sequence using the continuous seismic record from the nearest permanent seismic station to Kivu (supplemental information Figure S1, MBAR located 250 km from the main shock) during October 2002. During 5–29 October 2002, we compute local magnitude (ML) of 88 well-recorded earthquak ...
Plate Tectonics and Earthquake Potential of Spreading Ridges and
... spreading ridges and oceanic transform faults. Global surveys of mid-ocean seismicity have previously been published by Burr and Solomon [1978] and Solomon and Burr [1979], by Frohlich and Apperson [1992], and by Sobolev and Rundquist [1999]. We hope to present more definitive results by using a bet ...
... spreading ridges and oceanic transform faults. Global surveys of mid-ocean seismicity have previously been published by Burr and Solomon [1978] and Solomon and Burr [1979], by Frohlich and Apperson [1992], and by Sobolev and Rundquist [1999]. We hope to present more definitive results by using a bet ...
federal emergency
... of NEHRP Recommended Provisions for Seismic Regulations for New Buildings. It is designed to provide interested individuals and community decision-makers with information for assessing seismic risk and making informed decisions about seismic safety in their communities and in determining what might ...
... of NEHRP Recommended Provisions for Seismic Regulations for New Buildings. It is designed to provide interested individuals and community decision-makers with information for assessing seismic risk and making informed decisions about seismic safety in their communities and in determining what might ...
Dependence of earthquake recurrence times and independence of
... law is a signature of clustering, which means that the events tend to be closer to each other in the short time scale, in comparison with a Poisson process (given by f exponential, i.e., γ = a = δ = 1). In fact, clustering is more clearly identified by looking at the hazard rate function (containing ...
... law is a signature of clustering, which means that the events tend to be closer to each other in the short time scale, in comparison with a Poisson process (given by f exponential, i.e., γ = a = δ = 1). In fact, clustering is more clearly identified by looking at the hazard rate function (containing ...
102_2012_Wang_et_al_.. - Description
... Kramer 1996). Therefore, it is not an indication in physical damages caused by earthquakes, such as casualty, economic loss. For instance, PGA at 10 % exceedance probability within 50 years at Western and Eastern United States is around 0.6 g and less than 0.1 g, respectively (USGS 2008). Accordingl ...
... Kramer 1996). Therefore, it is not an indication in physical damages caused by earthquakes, such as casualty, economic loss. For instance, PGA at 10 % exceedance probability within 50 years at Western and Eastern United States is around 0.6 g and less than 0.1 g, respectively (USGS 2008). Accordingl ...
pdf file - University of Victoria
... The earthquake rate, average fault slip rate, and the effective seismic thickness have been examined for the Revere-Dellwood-Wilson, Sovanco, Nootka, Blanco and Mendocino transform faults, bordering the Juan de Fuca plate system. Seismicity statistics are related to the rate of slip along a given fa ...
... The earthquake rate, average fault slip rate, and the effective seismic thickness have been examined for the Revere-Dellwood-Wilson, Sovanco, Nootka, Blanco and Mendocino transform faults, bordering the Juan de Fuca plate system. Seismicity statistics are related to the rate of slip along a given fa ...
Clusters of Moderate Size Earthquakes along Main Central Thrust
... knickpoints in the gradient of major rivers is southern part of Himalaya corresponds to the traces of MCT which in turn suggest that some segments of MCT may still be active [26]. Supporting evidences of neotectonic activities along MCT is obtained from topographic and geodetic data [27]. From the a ...
... knickpoints in the gradient of major rivers is southern part of Himalaya corresponds to the traces of MCT which in turn suggest that some segments of MCT may still be active [26]. Supporting evidences of neotectonic activities along MCT is obtained from topographic and geodetic data [27]. From the a ...
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 [ ...
Anomalous soil radon fluctuations – signal of earthquakes in Nepal
... from soil radon gas at both locations (locations A and B). A plastic cup of dimension 4.7 cm in height, 6.3 cm diameter at the open end and 5.9 cm diameter at the closed end is used for tapping the CR-39 plate with a double-sided tape. A CR-39 plate of nearly square shape is attached at the lower cl ...
... from soil radon gas at both locations (locations A and B). A plastic cup of dimension 4.7 cm in height, 6.3 cm diameter at the open end and 5.9 cm diameter at the closed end is used for tapping the CR-39 plate with a double-sided tape. A CR-39 plate of nearly square shape is attached at the lower cl ...
Observing spatio-temporal clustering and separation using
... works report that both interevent distances or “jumps” between earthquake epicentres (Davidsen and Paczuski, 2005; Corral, 2006) and the interevent times, or return times (Bak et al., 2002; Corral, 2004), exhibit statistical distributions involving power-law regimes, revealing the complex spatiotemp ...
... works report that both interevent distances or “jumps” between earthquake epicentres (Davidsen and Paczuski, 2005; Corral, 2006) and the interevent times, or return times (Bak et al., 2002; Corral, 2004), exhibit statistical distributions involving power-law regimes, revealing the complex spatiotemp ...
Interface Locking of Subduction Zone near Costa Rica using
... movement orientation, and heat flow distribution. The boundary is almost perpendicular to the MAT and cut through the central Nicoya Peninsula [Barkhausen et al., 2001]. CNS has the age of 15~16 Ma, while EPS with the age of 22~24 Ma, which is relatively older than CNS [Barkhausen et al., 2001]. CNS ...
... movement orientation, and heat flow distribution. The boundary is almost perpendicular to the MAT and cut through the central Nicoya Peninsula [Barkhausen et al., 2001]. CNS has the age of 15~16 Ma, while EPS with the age of 22~24 Ma, which is relatively older than CNS [Barkhausen et al., 2001]. CNS ...
Proposal_Yan - Geophysics at Georgia Tech
... movement orientation, and heat flow distribution. The boundary is almost perpendicular to the MAT and cut through the central Nicoya Peninsula [Barkhausen et al., 2001]. CNS has the age of 15~16 Ma, while EPS with the age of 22~24 Ma, which is relatively older than CNS [Barkhausen et al., 2001]. CNS ...
... movement orientation, and heat flow distribution. The boundary is almost perpendicular to the MAT and cut through the central Nicoya Peninsula [Barkhausen et al., 2001]. CNS has the age of 15~16 Ma, while EPS with the age of 22~24 Ma, which is relatively older than CNS [Barkhausen et al., 2001]. CNS ...
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 ...
Central US earthquake catalog for hazard maps of Memphis
... mbLg, either calculated directly, or estimated from (1) intensity data, (2) some amplitude other than that of 1s period Lg, or (3) coda duration. However, the hazards community has moved to use of moment magnitudes, which indicates that the ideal, generalpurpose, central US catalog will use moment m ...
... mbLg, either calculated directly, or estimated from (1) intensity data, (2) some amplitude other than that of 1s period Lg, or (3) coda duration. However, the hazards community has moved to use of moment magnitudes, which indicates that the ideal, generalpurpose, central US catalog will use moment m ...
evidence of basin-and-range extensional tectonics in the sierra
... The Basin and Range tectonic province extends for more than 1500 km along the western Cordillera of North America. The west boundary of this province is generally considered to be at the east front of the Sierra Nevada, and the east boundary at the Colorado Plateau and the west front of the Wasatch ...
... The Basin and Range tectonic province extends for more than 1500 km along the western Cordillera of North America. The west boundary of this province is generally considered to be at the east front of the Sierra Nevada, and the east boundary at the Colorado Plateau and the west front of the Wasatch ...
August 2007
... good progress is being made on the Nevada Hazard Mitigation Plan. The deadline for submission to FEMA is the end of September. 1914 Reno Earthquakes Craig dePolo described the 1914 Reno earthquakes. On the basis of newspaper accounts of reports by people who felt the earthquake, the sources appeared ...
... good progress is being made on the Nevada Hazard Mitigation Plan. The deadline for submission to FEMA is the end of September. 1914 Reno Earthquakes Craig dePolo described the 1914 Reno earthquakes. On the basis of newspaper accounts of reports by people who felt the earthquake, the sources appeared ...
The South Iceland Seismic Zone: tectonic and sismotectonic
... most recent tectonic behaviour of the SISZ. 3.1. Plio-quaternary fault patterns At a regional scale, a study of the aerial photographs available at the Icelandic Geodetic Survey (scale: 1/50,000) enabled us to better characterize the pattern of the Plio-Quaternary faults. We present herein, as examp ...
... most recent tectonic behaviour of the SISZ. 3.1. Plio-quaternary fault patterns At a regional scale, a study of the aerial photographs available at the Icelandic Geodetic Survey (scale: 1/50,000) enabled us to better characterize the pattern of the Plio-Quaternary faults. We present herein, as examp ...
Focal depth estimates of earthquakes in the Himalayan
... The surface reflections are recorded after the direct P phase with a time delay that changes slowly with distance but rapidly with depth. Therefore, they provide powerful constrains on focal depth. As pP and sP are not isolated signals for shallow earthquakes, the arrival times are determined by mode ...
... The surface reflections are recorded after the direct P phase with a time delay that changes slowly with distance but rapidly with depth. Therefore, they provide powerful constrains on focal depth. As pP and sP are not isolated signals for shallow earthquakes, the arrival times are determined by mode ...
A Policy Guide to Steel Moment Frame
... SAC is a joint venture of the Structural Engineers Association of California (SEAOC), the Applied Technology Council (ATC), and California Universities for Research in Earthquake Engineering (CUREe), formed specifically to address both immediate and long-term needs related to solving performance pro ...
... SAC is a joint venture of the Structural Engineers Association of California (SEAOC), the Applied Technology Council (ATC), and California Universities for Research in Earthquake Engineering (CUREe), formed specifically to address both immediate and long-term needs related to solving performance pro ...
Repeating earthquakes in the Yellowstone volcanic field
... 2. Multiplet earthquake analysis Here we define the process used to retrieve multiplets, that is similar to that by Got et al. (1994), Rowe et al. (2002, 2004), Thelen et al. (2008), and Massin et al. (2011). The first step is populating a working Yellowstone earthquake waveform catalog with data from ...
... 2. Multiplet earthquake analysis Here we define the process used to retrieve multiplets, that is similar to that by Got et al. (1994), Rowe et al. (2002, 2004), Thelen et al. (2008), and Massin et al. (2011). The first step is populating a working Yellowstone earthquake waveform catalog with data from ...
The mechanism of intraplate earthquakes: insights from geodynamic
... first rupture, which had a stress drop of 1 Mpa. Stress on the fault then gradually rises due to the far-field loading(Figure 8), and reaches the new lower fault strength and causes a second fault rupture (Figure 8) in 1800 years. Because no further fault weakening occurs, it then takes another 3000 ...
... first rupture, which had a stress drop of 1 Mpa. Stress on the fault then gradually rises due to the far-field loading(Figure 8), and reaches the new lower fault strength and causes a second fault rupture (Figure 8) in 1800 years. Because no further fault weakening occurs, it then takes another 3000 ...
Dynamic response of reinforced masonry columns in classical
... ground motion. Concerning the size, larger columns are more stable than smaller ones with the same aspect ratio of dimensions. Concerning the period of the excitation, it affects significantly the response and the possibility of collapse, with low-frequency earthquakes being much more dangerous than ...
... ground motion. Concerning the size, larger columns are more stable than smaller ones with the same aspect ratio of dimensions. Concerning the period of the excitation, it affects significantly the response and the possibility of collapse, with low-frequency earthquakes being much more dangerous than ...
Mapping spatial variability of the frequency
... best suited for our analyses should cover long periods in highly seismic regions at small magnitudes of completeness. The smallest catalog we found useful for mapping likely magma chambers in a volume of about 10x10x20 km dimensions contained only 450 events [Murru et al., 1999]; but mapping the cha ...
... best suited for our analyses should cover long periods in highly seismic regions at small magnitudes of completeness. The smallest catalog we found useful for mapping likely magma chambers in a volume of about 10x10x20 km dimensions contained only 450 events [Murru et al., 1999]; but mapping the cha ...
Kashiwazaki-Kariwa Nuclear Power Plant
The Kashiwazaki-Kariwa Nuclear Power Plant (柏崎刈羽原子力発電所, Kashiwazaki-Kariwa genshiryoku-hatsudensho, Kashiwazaki-Kariwa NPP) is a large, modern (housing the world's first ABWR) nuclear power plant on a 4.2-square-kilometer (1,038 acres) site including land in the towns of Kashiwazaki and Kariwa in Niigata Prefecture, Japan on the coast of the Sea of Japan, from where it gets cooling water. The plant is owned and operated by Tokyo Electric Power Company (TEPCO).It was the largest nuclear generating station in the world by net electrical power rating.It was approximately 19 km (12 mi) from the epicenter of the second strongest earthquake to ever occur at a nuclear plant, the Mw 6.6 July 2007 Chūetsu offshore earthquake. This shook the plant beyond design basis and initiated an extended shutdown for inspection, which indicated that greater earthquake-proofing was needed before operation could be resumed. The plant was completely shut down for 21 months following the earthquake. Unit 7 was restarted after seismic upgrades on May 9, 2009, followed later by units 1, 5, and 6. (Units 2, 3, 4 were not restarted).After the April 2011 earthquake, all restarted units were shut down and safety improvements are being carried out. As of May 2015 no units are restarted and no units are expected to restart sooner than the end of 2015.