Poster - International Seismological Centre
... increases in each decade. Note that although no substantial amount of new phase data were acquired for the modern period (1964-2009), the number of phases used in the location has still increased by 3 million, owing to the fact that both the EHB and ISC locators use most phases with a valid ak135 (K ...
... increases in each decade. Note that although no substantial amount of new phase data were acquired for the modern period (1964-2009), the number of phases used in the location has still increased by 3 million, owing to the fact that both the EHB and ISC locators use most phases with a valid ak135 (K ...
Seismic Zone at East Africa Rift: Insights Into the Geothermal Potential
... In this study, we image the shallow crust of the four volcanic systems using ambient noise tomography on continuous data from the Menengai and Silali-Paka-Korosi seismic broadband network (Velasco et al., 2011). Specifically, we develop the corresponding Green’s functions and determine group velocit ...
... In this study, we image the shallow crust of the four volcanic systems using ambient noise tomography on continuous data from the Menengai and Silali-Paka-Korosi seismic broadband network (Velasco et al., 2011). Specifically, we develop the corresponding Green’s functions and determine group velocit ...
Quantifying the effect of large earthquakes in promoting eruptions
... the key attributes of each volcano that may lead to a seismically-triggered eruption and the general mechanisms by which earthquakes could trigger volcanic new activity. We developed a new approach by resolving the earthquake-induced normal static stress change on the magma pathway of each volcano i ...
... the key attributes of each volcano that may lead to a seismically-triggered eruption and the general mechanisms by which earthquakes could trigger volcanic new activity. We developed a new approach by resolving the earthquake-induced normal static stress change on the magma pathway of each volcano i ...
seismic analysis of low to medium rise building for base isolation
... The largest is a four storey dormitory building constructed for the Earthquake Strong Motion Observatory in Beijing in which the sliding surface is a layer of specially selected sand between terrazzo plates that are located above the foundation and under the walls at the ground floor level [2]. ...
... The largest is a four storey dormitory building constructed for the Earthquake Strong Motion Observatory in Beijing in which the sliding surface is a layer of specially selected sand between terrazzo plates that are located above the foundation and under the walls at the ground floor level [2]. ...
Earthquake Energy Release Mechanism
... and by the 1964 Good Friday, Valdez (Anchorage), Alaska earthquake (red curves). The 1960 tsunamis killed 61 people and caused about $24 million in damage. ...
... and by the 1964 Good Friday, Valdez (Anchorage), Alaska earthquake (red curves). The 1960 tsunamis killed 61 people and caused about $24 million in damage. ...
Earthquake Sources and Hazard in Northern Central America
... complex area. It is embedded between the Caribbean and North American plates and is bounded by the Cocos plate to the southwest. A cursory inspection of earthquake activity maps reveals high seismicity in the area. According to historical records, large earthquakes, reaching magnitudes up to M=8 hav ...
... complex area. It is embedded between the Caribbean and North American plates and is bounded by the Cocos plate to the southwest. A cursory inspection of earthquake activity maps reveals high seismicity in the area. According to historical records, large earthquakes, reaching magnitudes up to M=8 hav ...
Rapid Visual Screening for Seismic Evaluation of Existing Buildings
... the building, such as the building type, seismic zone, soil conditions, horizontal and vertical irregularities, apparent quality in masonry and RC structures and short column etc. This walk survey is carried out based on the checklists provided in a proforma for all five typology of buildings. Other ...
... the building, such as the building type, seismic zone, soil conditions, horizontal and vertical irregularities, apparent quality in masonry and RC structures and short column etc. This walk survey is carried out based on the checklists provided in a proforma for all five typology of buildings. Other ...
Cost Modeling of Reinforced Concrete Buildings Designed for
... square of floor area will generally gets reduced towards the upper floors due to the reduction in earthquake induced storey shears towards the upper storeys. BUILDINGS STUDIED The structural system with moment resisting frames considered for this study is based on the actual buildings constructed fo ...
... square of floor area will generally gets reduced towards the upper floors due to the reduction in earthquake induced storey shears towards the upper storeys. BUILDINGS STUDIED The structural system with moment resisting frames considered for this study is based on the actual buildings constructed fo ...
Chapter 01 - Earthquakes
... for simple fault geometries, can be estimated from the fault subsurface rupture length and downdip rupture width (Figure 3A). The latter is limited by the thickness of the brittle crust and the dip of the fault, so that vertical faults may have smaller down-dip rupture widths than inclined faults. T ...
... for simple fault geometries, can be estimated from the fault subsurface rupture length and downdip rupture width (Figure 3A). The latter is limited by the thickness of the brittle crust and the dip of the fault, so that vertical faults may have smaller down-dip rupture widths than inclined faults. T ...
Stress evolution following the 1811–1812 large earthquakes in the
... model NMSZ fault zone, resulting in a Coulomb stress drop of 5 MPa within the fault zone, as estimated by Hough et al. [2000]. The Coulomb stress on a plane is defined as sf = tb msb, where tb is the shear stress on the plane, sb is the normal stress, and m is the effective coefficient of friction [ ...
... model NMSZ fault zone, resulting in a Coulomb stress drop of 5 MPa within the fault zone, as estimated by Hough et al. [2000]. The Coulomb stress on a plane is defined as sf = tb msb, where tb is the shear stress on the plane, sb is the normal stress, and m is the effective coefficient of friction [ ...
1.6 Mb PowerPoint presentation
... modelled • fire suppression time needs to be obtained or calculated from building type and layout ...
... modelled • fire suppression time needs to be obtained or calculated from building type and layout ...
Improvement of Methods for Earthquake
... For regional hazard assessment, the simplest and usually used approach is to define the area which will be affected by landslides at some special location during the seismic shaking. Keefer compiled an earthquake-triggered landslides database which included 40 historical world-wide earthquakes, and ...
... For regional hazard assessment, the simplest and usually used approach is to define the area which will be affected by landslides at some special location during the seismic shaking. Keefer compiled an earthquake-triggered landslides database which included 40 historical world-wide earthquakes, and ...
ISNS 4359 Earthquakes and Volcanoes
... Tsunamis are, therefore, shallow-water waves (even in the open ocean)! Though tsunamis have very long wavelengths, their amplitude in the open ocean is often relatively small - commonly only a meter or two - and this amplitude is distributed over the very long wavelength so that tsunamis are quite i ...
... Tsunamis are, therefore, shallow-water waves (even in the open ocean)! Though tsunamis have very long wavelengths, their amplitude in the open ocean is often relatively small - commonly only a meter or two - and this amplitude is distributed over the very long wavelength so that tsunamis are quite i ...
PUBLICATIONS
... along the seismic zones were similar and amounted to V≈200 (170–230) km/year. It was also noted that almost all the foci of the earthquakes of the magnitude range under study were lined up in migration chains. In other words, the phenomenon of earthquake foci migration of the strongest earthquakes w ...
... along the seismic zones were similar and amounted to V≈200 (170–230) km/year. It was also noted that almost all the foci of the earthquakes of the magnitude range under study were lined up in migration chains. In other words, the phenomenon of earthquake foci migration of the strongest earthquakes w ...
tsunami disaster in south asia
... is indicated by large craters, which have been found in different parts of the earth. Also, it is possible that an asteroid may have fallen on the earth in prehistoric times - the last one some 65 million years ago during the Cretaceous period. Since evidence of the fall of meteorites and asteroids ...
... is indicated by large craters, which have been found in different parts of the earth. Also, it is possible that an asteroid may have fallen on the earth in prehistoric times - the last one some 65 million years ago during the Cretaceous period. Since evidence of the fall of meteorites and asteroids ...
Postseismic stress transfer explains time clustering of large
... seismic stage progressively vanishes. The corresponding relaxed stress after the postseismic relaxation becomes controlled by a dislocation of length L with an in¢nite width. This new fault scaling leads to values of 5^20 bar for L values ranging from 300 km to 75 km when replacing L by W in Eq. 3. ...
... seismic stage progressively vanishes. The corresponding relaxed stress after the postseismic relaxation becomes controlled by a dislocation of length L with an in¢nite width. This new fault scaling leads to values of 5^20 bar for L values ranging from 300 km to 75 km when replacing L by W in Eq. 3. ...
CV - NGRI
... Made significant contributions in earthquake studies towards understanding the geodynamics of the Indian plate margins, particularly the Burma-Andaman arc, the Himalaya-Tibet region and the diffuse Indian Ocean deformation zone. Brought in application of new methodologies in the country like seismic ...
... Made significant contributions in earthquake studies towards understanding the geodynamics of the Indian plate margins, particularly the Burma-Andaman arc, the Himalaya-Tibet region and the diffuse Indian Ocean deformation zone. Brought in application of new methodologies in the country like seismic ...
Earthquake-Tsunami in South Jogjakarta Indonesia
... Earthquake-Tsunami in South Jogjakarta Indonesia: Potential, Simulation Models, and... South Java subduction zones have lower seismic activity compared to those in Sumatra [16]. Based on the historical data, intense earthquake happened in South Java subduction area in period of 1977-2007 (Figure 1) ...
... Earthquake-Tsunami in South Jogjakarta Indonesia: Potential, Simulation Models, and... South Java subduction zones have lower seismic activity compared to those in Sumatra [16]. Based on the historical data, intense earthquake happened in South Java subduction area in period of 1977-2007 (Figure 1) ...
Resistivity image of the Philippine Sea Plate around the 1944... earthquake zone deduced by Marine and Land MT surveys
... The salient result of this study is the resistivity change of the subducting Philippine Sea Plate (Fig. 3). The uppermost mantle below the ocean in particular is shown as a resistive region (up to 500 -m at a depth of 40 km), and its resistivity decreases to about 10 -m with the plate subducting b ...
... The salient result of this study is the resistivity change of the subducting Philippine Sea Plate (Fig. 3). The uppermost mantle below the ocean in particular is shown as a resistive region (up to 500 -m at a depth of 40 km), and its resistivity decreases to about 10 -m with the plate subducting b ...
IOSR Journal of Mechanical and Civil Engineering (IOSR-JMCE) e-ISSN: 2278-1684,p-ISSN: 2320-334X,
... in the structure and then we will decide whether the particular part is retrofitted or rehabilitated according to the requirement. In this paper we are performing the push over analysis on flat slabs by using most common software SAP2000.Many existing flat slab buildings may not have been designed f ...
... in the structure and then we will decide whether the particular part is retrofitted or rehabilitated according to the requirement. In this paper we are performing the push over analysis on flat slabs by using most common software SAP2000.Many existing flat slab buildings may not have been designed f ...
Diaster Preparedness
... financial instability, and in extreme cases even civil duress as there is a potential for breakdown in access to public services such as water, electricity, and transportation. Focusing on one of the major disasters facing the west region we look at earthquakes which are defined as, “shaking or trem ...
... financial instability, and in extreme cases even civil duress as there is a potential for breakdown in access to public services such as water, electricity, and transportation. Focusing on one of the major disasters facing the west region we look at earthquakes which are defined as, “shaking or trem ...
Distribution Characteristics of Geohazards Induced by the Lushan
... 1. Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China 2. China Institute of Geo-Environment Monitoring, Beijing 100081, China 3. School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China ABSTRACT: The Lushan Earthquake induced ...
... 1. Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China 2. China Institute of Geo-Environment Monitoring, Beijing 100081, China 3. School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China ABSTRACT: The Lushan Earthquake induced ...
Dynamic response of reinforced masonry columns in classical
... ones (e.g. [7] – [12]). These studies have shown that the response is non-linear and sensitive even to small changes of the parameters. These characteristics are evident even to the simplest case of a rocking rigid block (Housner [13]). Previous analyses of the seismic response of classical columns ...
... ones (e.g. [7] – [12]). These studies have shown that the response is non-linear and sensitive even to small changes of the parameters. These characteristics are evident even to the simplest case of a rocking rigid block (Housner [13]). Previous analyses of the seismic response of classical columns ...
Effect of Discontinuous Load Path on Seismic Performance of
... use of the computer software. On the other hand in some lens. But, the same is not true for the concave lens; a part of cases seismic codes provide empirical rules for dealing with the line may lie outside the area of the concave lens. additional seismic demands required due to structural Structures ...
... use of the computer software. On the other hand in some lens. But, the same is not true for the concave lens; a part of cases seismic codes provide empirical rules for dealing with the line may lie outside the area of the concave lens. additional seismic demands required due to structural Structures ...
1880 Luzon earthquakes
The earthquakes of July 1880 in Luzon, the largest island of the Philippines, was one of the most destructive tremors on record in the history of the country. The shocks continued, with greater or less interruption, from the 14th to the 25th of the month, highlighted by three violent shaking events, which destroyed churches and other buildings, producing loss of life. Coinciding with the tectonic activity was an increased in volcanic activity in Taal Volcano in southwestern Luzon.The Luzon provinces of Manila, Cavite, Bulacan, Laguna, Pampanga, and Nueva Ecija, were the chief victims from the terrible convulsions with Manila and Laguna receiving the most damages. In many places, buildings were converted into shapeless heaps of ruins, and the materials of their prosperity buried beneath the rubbish.