Volcanic and seismic hazards at a proposed nuclear power site in
... stage produced several pyroclastic £ows that descended the northwestern £ank of the volcano. The most recent known activity produced three explosion craters and at least one lava £ow on the eastern £anks of Muria. In early site investigations, the three water-¢lled craters were variably and inapprop ...
... stage produced several pyroclastic £ows that descended the northwestern £ank of the volcano. The most recent known activity produced three explosion craters and at least one lava £ow on the eastern £anks of Muria. In early site investigations, the three water-¢lled craters were variably and inapprop ...
SOFT-STOREY BEHAVIOUR IN AN EARTHQUAKE and
... constructions. Because a construction is the whole with its ground and its super structure. Soft storey is the one of which the rigidity is lower than any other storeys due to the fact that it has not got the walls with the same properties the other ones have. If vertical load bearing structural ele ...
... constructions. Because a construction is the whole with its ground and its super structure. Soft storey is the one of which the rigidity is lower than any other storeys due to the fact that it has not got the walls with the same properties the other ones have. If vertical load bearing structural ele ...
Local earthquake tomography of central Costa Rica
... shows a recent uplift rate of up to 4.7 mm yr−1 as observed along the coast of Osa Peninsula (Gardner et al. 1992). The investigation area is located in central Costa Rica and extends from the trench to the volcanic front (Fig. 2). It thus covers the forearc area of the seamount subduction province ...
... shows a recent uplift rate of up to 4.7 mm yr−1 as observed along the coast of Osa Peninsula (Gardner et al. 1992). The investigation area is located in central Costa Rica and extends from the trench to the volcanic front (Fig. 2). It thus covers the forearc area of the seamount subduction province ...
Preliminary results of a paleoseismological analysis along the Sahel
... field investigations were used to select a site in the south area of Kolea city, located 40 km SW of Algiers, on the southern flank of the Sahel fold (Fig. 2). The first witnesses of active faulting near the surface were highlighted by an abrupt change of the dip of the Astian upper layers from 31 to ...
... field investigations were used to select a site in the south area of Kolea city, located 40 km SW of Algiers, on the southern flank of the Sahel fold (Fig. 2). The first witnesses of active faulting near the surface were highlighted by an abrupt change of the dip of the Astian upper layers from 31 to ...
Mapping spatial variability of the frequency
... The longer the period included for analysis, the more earthquakes per volume become available, but, in general, the Mc is higher during early periods. When early parts of catalogs are used, the Mc for the entire data set must be raised, which reduces the number of events that may be included for rec ...
... The longer the period included for analysis, the more earthquakes per volume become available, but, in general, the Mc is higher during early periods. When early parts of catalogs are used, the Mc for the entire data set must be raised, which reduces the number of events that may be included for rec ...
The Moho in subduction zones - Earth and Space Sciences at the
... a prominent role in dictating the expression of both Mohos from trench to arc. In the second part, we will review results from other subduction zones in light of this model, evaluate its general applicability and discuss some of the resulting implications. 2. Cascadia Cascadia is a warm subduction z ...
... a prominent role in dictating the expression of both Mohos from trench to arc. In the second part, we will review results from other subduction zones in light of this model, evaluate its general applicability and discuss some of the resulting implications. 2. Cascadia Cascadia is a warm subduction z ...
? AN EVALUATION OF CHINESE ANNUAL
... by combination with the high-risk area prediction. Improved CSB prediction could be superior to high-risk area only prediction because it uses more than probabilitybased information. However on its own, this cannot yet be shown to give significant improvement: CSB prediction is still empirical and i ...
... by combination with the high-risk area prediction. Improved CSB prediction could be superior to high-risk area only prediction because it uses more than probabilitybased information. However on its own, this cannot yet be shown to give significant improvement: CSB prediction is still empirical and i ...
ARTICLE IN PRESS
... The Tatun Volcano Group (TVG) is located at the northern tip of Taiwan, near the capital Taipei and close to two nuclear power plants. Because of lack of any activity in historical times it has been classified as an extinct volcano, even though more recent studies suggest that TVG might have been ac ...
... The Tatun Volcano Group (TVG) is located at the northern tip of Taiwan, near the capital Taipei and close to two nuclear power plants. Because of lack of any activity in historical times it has been classified as an extinct volcano, even though more recent studies suggest that TVG might have been ac ...
Upper mantle anisotropy beneath Australia and Tahiti from P
... Polynésien de Prévention des Tsunamis (CPPT) in French Polynesia, which operates by automatic detection, location and quantification of the magnitude of large earthquakes using both P wave polarization direction and the time difference between P and S waves. We will show that Ppol method could be ...
... Polynésien de Prévention des Tsunamis (CPPT) in French Polynesia, which operates by automatic detection, location and quantification of the magnitude of large earthquakes using both P wave polarization direction and the time difference between P and S waves. We will show that Ppol method could be ...
The Yellowstone magmatic system from the mantle plume to the
... effectively tailoring its Hilbert space dynamically. This can be done by restricting the system evolution to a subset of possible states. When even a single energy level is disabled, the system evolution is deeply modified and is ruled by the so-called quantum Zeno dynamics (QZD) (1–5). As the name ...
... effectively tailoring its Hilbert space dynamically. This can be done by restricting the system evolution to a subset of possible states. When even a single energy level is disabled, the system evolution is deeply modified and is ruled by the so-called quantum Zeno dynamics (QZD) (1–5). As the name ...
The influence of crenulation cleavage development on the bulk
... Voigt and Reuss averages are the simplest and best-known averaging techniques for obtaining estimates of the effective elastic properties of polymineralic samples (Mainprice, 2007). The Voigt and Reuss calculations assume, respectively, constant elastic strain and constant elastic stress among all g ...
... Voigt and Reuss averages are the simplest and best-known averaging techniques for obtaining estimates of the effective elastic properties of polymineralic samples (Mainprice, 2007). The Voigt and Reuss calculations assume, respectively, constant elastic strain and constant elastic stress among all g ...
The lithosphere–asthenosphere boundary in the North
... Similar to our results, Li et al. [6] and Kumar et al. [7] have also observed the LAB in Hawaii and in the Tien Shan–Karakoram area, respectively. These findings lead us to suppose that the LAB may be a globally existing and observable discontinuity, comparable to the Moho. The S-receiver function t ...
... Similar to our results, Li et al. [6] and Kumar et al. [7] have also observed the LAB in Hawaii and in the Tien Shan–Karakoram area, respectively. These findings lead us to suppose that the LAB may be a globally existing and observable discontinuity, comparable to the Moho. The S-receiver function t ...
UNCERTAINTY AND QUALITY RATING IN ANALYTICAL
... The discriminant attributes which affect data quality are the Analysis Type, the Modelling of the structural response, and the Seismic Demand. Different choices are possible in each of these remits and the quality of the fragility curve is a function of the consistency of the choice made across them ...
... The discriminant attributes which affect data quality are the Analysis Type, the Modelling of the structural response, and the Seismic Demand. Different choices are possible in each of these remits and the quality of the fragility curve is a function of the consistency of the choice made across them ...
A crustal model of the ultrahigh-pressure Dabie Shan orogenic belt
... of the calculated depth. The phases Pg and Pn are recognizable as the first arrivals on all record sections. Pg, the refracted wave propagating within the upper crust, is observed at distances of ⬍100 km. Pn, the refraction within the uppermost mantle, is a first arrival at distances beyond 160 km. ...
... of the calculated depth. The phases Pg and Pn are recognizable as the first arrivals on all record sections. Pg, the refracted wave propagating within the upper crust, is observed at distances of ⬍100 km. Pn, the refraction within the uppermost mantle, is a first arrival at distances beyond 160 km. ...
Are earthquakes predictable? - San Andreas UCLA Seismic
... mechanism constitute the major parameters of an earthquake. Their specification allows US to calculate static deformation or low-frequency seismograms for an event. In considering earthquake predictions, it is often implicitly assumed that ‘large’ earthquakes-those which are potentially damaging-can ...
... mechanism constitute the major parameters of an earthquake. Their specification allows US to calculate static deformation or low-frequency seismograms for an event. In considering earthquake predictions, it is often implicitly assumed that ‘large’ earthquakes-those which are potentially damaging-can ...
S Waves
... Earthquakes occur due to movements that take place within the Earth. Large pressures build up between huge plates of land both above and below the sea. The release of these pressures is accompanied by huge releases of energy as one land mass slides against another. ...
... Earthquakes occur due to movements that take place within the Earth. Large pressures build up between huge plates of land both above and below the sea. The release of these pressures is accompanied by huge releases of energy as one land mass slides against another. ...
Geometry of the PamirHindu Kush intermediatedepth earthquake
... crustal seismicity, which is confined to the uppermost 20–25 km. The Hindu Kush seismic zone extends from 40 to 250 km depth and generally strikes east-west, yet bends northeast, toward the Pamir, at its eastern end. It may be divided vertically into upper and lower parts separated by a gap at approx ...
... crustal seismicity, which is confined to the uppermost 20–25 km. The Hindu Kush seismic zone extends from 40 to 250 km depth and generally strikes east-west, yet bends northeast, toward the Pamir, at its eastern end. It may be divided vertically into upper and lower parts separated by a gap at approx ...
Rapid Visual Screening for Seismic Evaluation of Existing Buildings
... Most of the methods for seismic evaluation of building follow three levels of assessment. RVS methods vary from those requiring 15-30 minutes on site for each building to more detailed ones involving some basic calculations. Preliminary assessment techniques are employed to analyze the building perf ...
... Most of the methods for seismic evaluation of building follow three levels of assessment. RVS methods vary from those requiring 15-30 minutes on site for each building to more detailed ones involving some basic calculations. Preliminary assessment techniques are employed to analyze the building perf ...
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.