the effectiveness of viscous dampers for structures subjected to
... The input histories used in analysis were based on the two components of the 22 far-filed (measured 10 km or more from fault rupture) NGA PEER (2009b) records. These 44 records have been identified by ATC 63 (FEMA 2009) for collapse evaluation analysis. The selected 22 records correspond to a relati ...
... The input histories used in analysis were based on the two components of the 22 far-filed (measured 10 km or more from fault rupture) NGA PEER (2009b) records. These 44 records have been identified by ATC 63 (FEMA 2009) for collapse evaluation analysis. The selected 22 records correspond to a relati ...
Fourth-order finite-difference scheme for P and SV waves
... Format of files for the elastic constants: If the number of elastic constants is 5, 5 files have to be prepared. If the number of elastic constants is 7, then 7 files are needed. Each of these files contains only the values of one fixed elastic constant. For example, if a file contains values of c13 ...
... Format of files for the elastic constants: If the number of elastic constants is 5, 5 files have to be prepared. If the number of elastic constants is 7, then 7 files are needed. Each of these files contains only the values of one fixed elastic constant. For example, if a file contains values of c13 ...
Juan de Fuca slab geometry and its relation to Wadati
... Figures S2, S4, and S5 in the auxiliary material).1 We utilize 35 years (1975–2009) of recorded earthquakes from the ANSS catalog, filtered to be consistent with the 25 years (1984–2008) of relocated NCSS catalog earthquakes. Specifically, we retained earthquakes recorded at a minimum of 6 stations, ...
... Figures S2, S4, and S5 in the auxiliary material).1 We utilize 35 years (1975–2009) of recorded earthquakes from the ANSS catalog, filtered to be consistent with the 25 years (1984–2008) of relocated NCSS catalog earthquakes. Specifically, we retained earthquakes recorded at a minimum of 6 stations, ...
The Performance of Earthquake Strengthened URM Buildings in the
... A diagram that shows the peak ground acceleration that a building of a specific period will be subjected to. The spectra can be used to assess both the seismic inertial forces induced in an elastically responding structure and the amount of induced displacement relative to the ground A structural el ...
... A diagram that shows the peak ground acceleration that a building of a specific period will be subjected to. The spectra can be used to assess both the seismic inertial forces induced in an elastically responding structure and the amount of induced displacement relative to the ground A structural el ...
How EM survey analysis validates current technology, processing
... that the drilling target in fact was below the seabed logging detection threshold. These surveys were classified as seabed logging technical successes with discoveries modelled subdetection, because the EM response was as expected in the context of the information about the actual reservoir. Such ca ...
... that the drilling target in fact was below the seabed logging detection threshold. These surveys were classified as seabed logging technical successes with discoveries modelled subdetection, because the EM response was as expected in the context of the information about the actual reservoir. Such ca ...
Heimgartner_thesis_revise - The Nevada Seismological
... recent data and about other mountain ranges throughout the world, but for the Sierra Nevada Mountains, the story is much more complicated. Results from a seismic refraction experiment extending from San Francisco, CA to Fallon, NV, and then from Fallon, NV down the spine of the Sierras and into Owen ...
... recent data and about other mountain ranges throughout the world, but for the Sierra Nevada Mountains, the story is much more complicated. Results from a seismic refraction experiment extending from San Francisco, CA to Fallon, NV, and then from Fallon, NV down the spine of the Sierras and into Owen ...
Intraslab Stresses in the Cascadia Subduction Zone from Inversion
... some small events from the routine-processing results given by the PNSN catalog and Bolton (2003). To provide a qualitative assessment of the quality of the routine-processing solutions, we compare the 39 events in our compilation for which focal mechanism solutions were given by both PNSN and a dif ...
... some small events from the routine-processing results given by the PNSN catalog and Bolton (2003). To provide a qualitative assessment of the quality of the routine-processing solutions, we compare the 39 events in our compilation for which focal mechanism solutions were given by both PNSN and a dif ...
Seismic modeling in viscoelastic media
... fitting parameters are the relaxation times. The theory, developed in Carcione et al. (1988c), circumvents the convolutional relation between the stress and strain tensors by the introduction of the memory variables. In the 3-D case, the resulting wave equation is solved for the displacement field, ...
... fitting parameters are the relaxation times. The theory, developed in Carcione et al. (1988c), circumvents the convolutional relation between the stress and strain tensors by the introduction of the memory variables. In the 3-D case, the resulting wave equation is solved for the displacement field, ...
federal emergency
... This Handbook presents a method to quickly identify, inventory, and rank buildings posing risk of death, injury, or severe curtailment in use following an earthquake. The Rapid Visual Screening (RVS) procedure can be used by trained personnel to identify potentially hazardous buildings on the basis ...
... This Handbook presents a method to quickly identify, inventory, and rank buildings posing risk of death, injury, or severe curtailment in use following an earthquake. The Rapid Visual Screening (RVS) procedure can be used by trained personnel to identify potentially hazardous buildings on the basis ...
ALOS PALSAR interferometry of Taupo Volcanic Zone
... this study of Taupo Volcanic Zone, New Zealand 2. We confirm that L-band interferometry can be successfully used for mapping ground deformations in densely vegetated regions such as TVZ, New Zealand 3. We could identified ground subsidence at a few geothermal fields (Wairakei, Tauhara, Ohaaki) and p ...
... this study of Taupo Volcanic Zone, New Zealand 2. We confirm that L-band interferometry can be successfully used for mapping ground deformations in densely vegetated regions such as TVZ, New Zealand 3. We could identified ground subsidence at a few geothermal fields (Wairakei, Tauhara, Ohaaki) and p ...
Low seismic-wave speeds and enhanced fluid
... Figure 2. A: Data from shot 25 reduced at 6 km/s [time 2 (distance/6)]. Note strong PiP phase (reflection from lower crust layer) recorded to near zero offset. Ray paths are shown in D as three arrows at bottom left. Beyond 105 km offset, we append receiver gather for seismograph located at shotpoin ...
... Figure 2. A: Data from shot 25 reduced at 6 km/s [time 2 (distance/6)]. Note strong PiP phase (reflection from lower crust layer) recorded to near zero offset. Ray paths are shown in D as three arrows at bottom left. Beyond 105 km offset, we append receiver gather for seismograph located at shotpoin ...
determination of fault plane orientations from rupture directivity of
... When stress is applied to an object, it will accumulate until a critical point is reached and then the material ruptures. Under pressure and temperature conditions at the Earth's surface, an object may respond in a brittle manner once a critical stress load is reached. At greater depth within the Ea ...
... When stress is applied to an object, it will accumulate until a critical point is reached and then the material ruptures. Under pressure and temperature conditions at the Earth's surface, an object may respond in a brittle manner once a critical stress load is reached. At greater depth within the Ea ...
2. Gravitational Waves - Hanford Observatory
... (APS) publicized as part of World Year of Physics (WYP) 2005 activities Use infrastructure/help from SETI@home developers for the distributed computing parts (BOINC) Goal: pulsar searches using ~1 million clients. Support for Windows, Mac OSX, Linux clients From our own clusters we can get ~ thousan ...
... (APS) publicized as part of World Year of Physics (WYP) 2005 activities Use infrastructure/help from SETI@home developers for the distributed computing parts (BOINC) Goal: pulsar searches using ~1 million clients. Support for Windows, Mac OSX, Linux clients From our own clusters we can get ~ thousan ...
Seismicity patterns and velocity structure of Katla volcano, Iceland
... straight line, but rather a soft bulge with no apparent sudden changes (Fig. 3). The dataset from within the Katla caldera shows a straight line and a b-value close to 1. It is thus not surprising that when a dataset including both areas is used to plot the frequency–magnitude distribution we get (a ...
... straight line, but rather a soft bulge with no apparent sudden changes (Fig. 3). The dataset from within the Katla caldera shows a straight line and a b-value close to 1. It is thus not surprising that when a dataset including both areas is used to plot the frequency–magnitude distribution we get (a ...
shallow Water `06 - Ocean Mixing Group
... surface (Figure 3). These records provided depictions of the wave fronts over 3-nm ranges from the ships, extending our understanding of the shapes of the wave fronts beyond their points of intersection with the ships. Wave-front shapes were tracked even further by aircraft radar flights and satelli ...
... surface (Figure 3). These records provided depictions of the wave fronts over 3-nm ranges from the ships, extending our understanding of the shapes of the wave fronts beyond their points of intersection with the ships. Wave-front shapes were tracked even further by aircraft radar flights and satelli ...
Earthquake casualty estimation
Recent advances are improving the speed and accuracy of loss estimates immediately after earthquakes (within less than an hour) so that injured people may be rescued more efficiently. After major and large earthquakes, rescue agencies and civil defense managers rapidly need quantitative estimates of the extent of the potential disaster, at a time when information from the affected area may not yet have reached the outside world. For the injured below the rubble every minute counts.To rapidly provide estimates of the extent of an earthquake disaster is much less of a problem in industrialized than in developing countries. This article focuses on how one can estimate earthquake losses in developing countries in real time.