Crustal Velocity Structure in Iranian Kopeh
... discussion, it is assumed that we are estimating the radial receiver function. First, the vertical component is cross-correlated with the radial component to estimate the lag of the first and largest spike in the receiver function (the optimal time is that of the largest peak in the absolute sense i ...
... discussion, it is assumed that we are estimating the radial receiver function. First, the vertical component is cross-correlated with the radial component to estimate the lag of the first and largest spike in the receiver function (the optimal time is that of the largest peak in the absolute sense i ...
evaluation of ground motion intensities from induced earthquakes
... (3) Associate Professor, Stanford University, [email protected] ...
... (3) Associate Professor, Stanford University, [email protected] ...
2. Data processing and group velocity measurements
... measured only from distant earthquakes. Second, it is difficult to obtain high-quality short-period (<20 s) dispersion measurements from teleseismic events due to intrinsic attenuation and scattering along ray paths. It is, however, the short-period waves that are most useful to constrain the struct ...
... measured only from distant earthquakes. Second, it is difficult to obtain high-quality short-period (<20 s) dispersion measurements from teleseismic events due to intrinsic attenuation and scattering along ray paths. It is, however, the short-period waves that are most useful to constrain the struct ...
Centrifuge tests to assess seismic site response of partially
... water to 8 fog-spray nozzles. Three sets of BETE nozzles were utilized in this investigation to obtain various discharge rates and, therefore, different degree of saturation profiles. 1/8 PJ10, 1/8 PJ20, and 1/8 PJ40 nozzles were used for degrees of saturation lower than 45%, between 45% and 60%, and ...
... water to 8 fog-spray nozzles. Three sets of BETE nozzles were utilized in this investigation to obtain various discharge rates and, therefore, different degree of saturation profiles. 1/8 PJ10, 1/8 PJ20, and 1/8 PJ40 nozzles were used for degrees of saturation lower than 45%, between 45% and 60%, and ...
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 ...
Tables
... elastic half space with uniform values of shear modulus (or rigidity) and Poisson’s ratio . Yet other work ...
... elastic half space with uniform values of shear modulus (or rigidity) and Poisson’s ratio . Yet other work ...
International Journal of Computer Science and Intelligent
... Structures). Story heights are assumed to be same for all build ings including the ground story. The build ings are assumed to be fixed at the base. The floors of all buildings act as rigid diaphrag ms. Shopping Comp lex is analyzed and designed by using ETABS v 9.7.4 software. In this paper, two bu ...
... Structures). Story heights are assumed to be same for all build ings including the ground story. The build ings are assumed to be fixed at the base. The floors of all buildings act as rigid diaphrag ms. Shopping Comp lex is analyzed and designed by using ETABS v 9.7.4 software. In this paper, two bu ...
Józef Kabiesz, Beata Sikora, Marek Sikora and Łukasz Wróbel
... The aim of this paper is to make an attempt at improving accuracy of seismic hazard prediction. Two hazard assessment methods, commonly applied in Polish hard coal mines, act as our reference point. These methods are so-called seismic method and seismoacoustic method which are described later in thi ...
... The aim of this paper is to make an attempt at improving accuracy of seismic hazard prediction. Two hazard assessment methods, commonly applied in Polish hard coal mines, act as our reference point. These methods are so-called seismic method and seismoacoustic method which are described later in thi ...
Listric Thrust Faulting in the Laramide Front of North
... faults and folds that step right to the north, forming a ragged, sawtooth pattern of uplifted units. These structural steps range in size from 50 km between the en echelon Sangre de Cristo, Wet Mountain, and Front Range arches to 10 km along the margin of the northeastern Front Range. South of the S ...
... faults and folds that step right to the north, forming a ragged, sawtooth pattern of uplifted units. These structural steps range in size from 50 km between the en echelon Sangre de Cristo, Wet Mountain, and Front Range arches to 10 km along the margin of the northeastern Front Range. South of the S ...
Battleship - Quakes & Tectonics - New York State Regents Earth
... Click on the ‘Q’ at the center of the square. Be careful to click only on the ‘Q’. A question will appear. IF the team answers the question correctly, click on ‘return to board’. This will take you back to the main game board. Now click anywhere else in the box (except the ‘Q’). The box will disappe ...
... Click on the ‘Q’ at the center of the square. Be careful to click only on the ‘Q’. A question will appear. IF the team answers the question correctly, click on ‘return to board’. This will take you back to the main game board. Now click anywhere else in the box (except the ‘Q’). The box will disappe ...
Continental crust under compression: A seismic refraction study of
... 20 air guns on board the R/V Maurice Ewing with a total capacity of 139 liter. The air guns were fired every 50 m on the offshore portions of the seismic transects (Figure 1). The two-way travel time to the acoustic basement is constrained using stacked multichannel seismic (MCS) data on both the ea ...
... 20 air guns on board the R/V Maurice Ewing with a total capacity of 139 liter. The air guns were fired every 50 m on the offshore portions of the seismic transects (Figure 1). The two-way travel time to the acoustic basement is constrained using stacked multichannel seismic (MCS) data on both the ea ...
Earthquake Resistant Design of Open Ground Storey Building
... IJSTE - International Journal of Science Technology & Engineering | Volume 2 | Issue 4 | October 2015 ...
... IJSTE - International Journal of Science Technology & Engineering | Volume 2 | Issue 4 | October 2015 ...
Through a glass darkly: improving raypath interferometry Summary
... Interferometry is a family of wave propagation techniques widely used in the physical sciences to perform imaging or image corrections, or to characterize the media through which waves are propagated. Over the past few years, we have developed a processing technique, based partly on interferometric ...
... Interferometry is a family of wave propagation techniques widely used in the physical sciences to perform imaging or image corrections, or to characterize the media through which waves are propagated. Over the past few years, we have developed a processing technique, based partly on interferometric ...
Volcanic activity before and after large tectonic earthquakes
... statistical study at the subregional level, showing that certain subregions are especially predisposed to concurrent eruption–earthquake sequences, whereas such clustering is statistically less significant in other subregions. Based on this study, we argue that individual and selected observations ma ...
... statistical study at the subregional level, showing that certain subregions are especially predisposed to concurrent eruption–earthquake sequences, whereas such clustering is statistically less significant in other subregions. Based on this study, we argue that individual and selected observations ma ...
The state of the upper mantle beneath southern Africa
... We construct the 3D upper mantle model for southern Africa employing the two-step procedure previously used for Australia (Debayle and Kennett, 2000b), eastern Africa (Debayle et al., 2001) and Siberia (Priestley and Debayle, 2003). We first use the automated version (Debayle, 1999) of the Cara and ...
... We construct the 3D upper mantle model for southern Africa employing the two-step procedure previously used for Australia (Debayle and Kennett, 2000b), eastern Africa (Debayle et al., 2001) and Siberia (Priestley and Debayle, 2003). We first use the automated version (Debayle, 1999) of the Cara and ...
Earthquake engineering
Earthquake engineering or Seismic engineering is a branch of engineering that searches for ways to make structures, such as buildings and bridges, resistant to earthquake damage. Earthquake engineer, better known as a seismic engineer aim to develop building techniques that will prevent any damage in a minor quake and avoid serious damage or collapse in a major shake. It is the scientific field concerned with protecting society, the natural environment, and the man-made environment from earthquakes by limiting the seismic risk to socio-economically acceptable levels. Traditionally, it has been narrowly defined as the study of the behavior of structures and geo-structures subject to seismic loading; it is considered as a subset of both structural and geotechnical engineering. However, the tremendous costs experienced in recent earthquakes have led to an expansion of its scope to encompass disciplines from the wider field of civil engineering, mechanical engineering and from the social sciences, especially sociology, political science, economics and finance. The main objectives of earthquake engineering are: Foresee the potential consequences of strong earthquakes on urban areas and civil infrastructure. Design, construct and maintain structures to perform at earthquake exposure up to the expectations and in compliance with building codes.A properly engineered structure does not necessarily have to be extremely strong or expensive. It has to be properly designed to withstand the seismic effects while sustaining an acceptable level of damage.