Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Farhad Sedaghati"'
Publikováno v:
Earthquake Spectra. 38:128-151
The Uniform California Earthquake Rupture Forecast Version 3 (UCERF3) relaxes fault segmentation, allowing multi-segment and multi-fault ruptures through fault-to-fault “jumps,” with lengths up to ∼1200 km along the San Andreas Fault. Local fau
Autor:
Shahram Pezeshk, Anooshiravan Ansari, Farhad Sedaghati, Siamak Daneshvaran, Mehdi Zare, Sahar Rahpeyma
Publikováno v:
Geophysical Journal International. 223:1355-1377
SUMMARYTien Shan of central Asia is known as one of the world's largest, youngest and most active intracontinental orogens. In this study, we implemented the horizontal-to-vertical spectral ratio (HVSR) technique as a widely used first-order approxim
Publikováno v:
Pure and Applied Geophysics. 177:3713-3732
A generalization of the stochastic summation scheme of small earthquakes following a general form of the source spectrum (ω−n) model is developed to estimate the proper probability density functions for rupture propagation over the fault and to si
Autor:
Nima Nazemi, Mehdi Zare, Shahram Pezeshk, Anooshiravan Ansari, Siamak Daneshvaran, Farhad Sedaghati
Publikováno v:
Journal of Seismology. 23:1047-1070
In this study, we evaluate the body and coda wave attenuation characteristics within Kyrgyzstan and Tajikistan as part of Central Asia. The selected database consists of 354 broadband seismograms from 179 local earthquakes recorded by 24 different st
Publikováno v:
Soil Dynamics and Earthquake Engineering. 113:534-544
The impact of unconsolidated sedimentary basins on ground motion amplification is of particular interest for earthquake engineers and seismologists. The Mississippi embayment (ME) of the New Madrid seismic zone, located in the central United States,
Publikováno v:
Bulletin of the Seismological Society of America. 108:742-760
Publikováno v:
Journal of Seismology. 22:455-470
Attenuation characteristics in the New Madrid Seismic Zone (NMSZ) are estimated from 157 local seismograph recordings out of 46 earthquakes of 2.6 ≤ M ≤ 4.1 with hypocentral distances up to 60 km and focal depths down to 25 km. Digital waveform s
Publikováno v:
Tectonophysics. :623-633
Unique properties of coda waves are employed to evaluate the frequency dependent quality factor of Lg waves using the coda normalization method in the New Madrid seismic zone of the central United States. Instrument and site responses are eliminated
Autor:
Farhad Sedaghati, Shahram Pezeshk
Publikováno v:
Bulletin of the Seismological Society of America. 107:934-948
We present new ground‐motion prediction equations (GMPEs) to estimate horizontal and vertical strong ground motion intensity measures (GMIMs) generated by shallow active crustal earthquakes occurring within the Iranian plateau. To this end, a datas
Autor:
Shahram Pezeshk, Farhad Sedaghati
Publikováno v:
Journal of Geophysics and Engineering. 13:912-927
In this paper, the performance and advantages and disadvantages of various regression methods to derive coefficients of an attenuation relationship have been investigated. A database containing 350 records out of 85 earthquakes with moment magnitudes