Synthesis of geodetic and seismological results for the 1979 Imperial Valley earthquake is approached using three-dimensional finite element modeling techniques. The displacements and stresses are calculated elastically throughout the modeled region. The vertical elastic structure in the model is derived from compressional and shear wave velocities as used in the seismic data analysis (Fuis et ...

Nowadays it is common to use the fragility curves in probabilistic methods to determine the collapse probability resulting from an earthquake. The uncertainties exist in intensity and frequency content of the earthquake records are considered as the most effective parameters in developing the fragility curves. The pulse-type records reported in the near-fault regions might lead to the major dam...

interferometric synthetic aperture radar (insar) technique is valuable tool in monitoring crustal deformation due to its large spatial coverage and high spatial resolutions. in this paper, the intersiesmic crustal deformation occurred before earthquake on august 2012 in ahar-varzegan located in north-west of iran is studied using persistent scattering interferometry. the psi algorithm used in t...

this paper presents the application of radial basis neural networks to the development of a novel method for the condition monitoring and fault diagnosis of synchronous generators. in the proposed scheme, flux linkage analysis is used to reach a decision. probabilistic neural network (pnn) and discrete wavelet transform (dwt) are used in design of fault diagnosis system. pnn as main part of thi...

A detailed study of the aftershocks of the earthquake that devastated Managua, Nicaragua, on December 23, 1972, shows that the earthquake occurred on a fault that strikes N30 ° to 35°E and dips 80 ° to 90°E, and that this fault moved in a leftlateral sense over a zone about 15 km long extending from shallow depth to a depth of 8 or 10 km. The extensive damage accompanying an earthquake with bod...

We present an inversion strategy capable of using real-time high-rate GPS data to simultaneously solve for a distributed slip model and fault geometry in real time as a rupture unfolds. We employ Bayesian inference to find the optimal fault geometry and the distribution of possible slip models for that geometry using a simple analytical solution. By adopting an analytical Bayesian approach, we ...

The objective of present study is to develop a finite element method (FEM) software system toward a large-scale computation of following seismic processes: (1) Accumulation of the stress around active faults in the crust, which is induced by a subduction of plates in a long time span (static deformation process); (2) Onset of an earthquake due to a dynamic sliding on the faults, which is induce...

on 26 december 2003 at 05:26lt (01:26gmt), a catastrophic earthquake mw 6.6, seismic moment (6 – 9 ×10 nm) struck the city of bam in the kerman province of southeast iran. the intense shaking in the city caused the complete collapse of nearly every building in the central parts of the city including many of the newer buildings, killing about 40000 people officially. the city lies to the east of...

1. introduction zakeri gary (1750) found that earthquake is jolts of some places or significant portions of land to natural causes with big voices like thunder that is often accompanied by an eruption of water, fire, smog or wind. after the earthquake, building efficiency greatly reduces because of the network’s collapse and closing of paths. however, after a catastrophic disaster, communicatio...

[1] The 23 October 2002 Nenana Mountain Earthquake (Mw 6.7) occurred on the Denali Fault (Alaska), to the west of the Mw 7.9 Denali Earthquake that ruptured the same fault 11 days later. We used 6 interferograms, constructed using radar images from the Canadian Radarsat-1 and European ERS-2 satellites, to determine the coseismic surface deformation and a source model. Data were acquired on asce...