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Earthquake ground motion predictive equations for Garhwal Himalaya, India
Abstract Predictive equations based on the stochastic approach are developed for earthquake ground motions from Garhwal Himalayan earthquakes of 3.5≤M w≤6.8 at a distance of 10≤R≤250km. The predicted ground motion parameters are response spectral values at frequencies from 0.25 to 20Hz, and peak ground acceleration (PGA). The ground motion prediction equations (GMPEs) are derived from an empirically based stochastic ground motion model. The GMPEs show a fair agreement with the empirically developed ground motion equations from Himalaya as well as the NGA equation. The proposed relations also reasonably predict the observed ground motion of two major Himalayan earthquakes from Garhwal Himalayan region. For high magnitudes, there is insufficient data to satisfactorily judge the relationship; however it reasonably predicts the 1991 Uttarkashi earthquake (M w=6.8) and 1999 Chamoli earthquake (M w=6.4) from Garhwal Himalaya region.
Highlights Key seismic parameters used to model Garhwal Himalaya earthquakes. Modeling uncertainty is estimated from simulated and actual response spectra. Ground motion predictive equation is proposed based on generated synthetic scenarios. Proposed predictive equation is validated against Indian and NGA equations. Study provides an alternative to unavailability of local predictive equations.
Earthquake ground motion predictive equations for Garhwal Himalaya, India
Abstract Predictive equations based on the stochastic approach are developed for earthquake ground motions from Garhwal Himalayan earthquakes of 3.5≤M w≤6.8 at a distance of 10≤R≤250km. The predicted ground motion parameters are response spectral values at frequencies from 0.25 to 20Hz, and peak ground acceleration (PGA). The ground motion prediction equations (GMPEs) are derived from an empirically based stochastic ground motion model. The GMPEs show a fair agreement with the empirically developed ground motion equations from Himalaya as well as the NGA equation. The proposed relations also reasonably predict the observed ground motion of two major Himalayan earthquakes from Garhwal Himalayan region. For high magnitudes, there is insufficient data to satisfactorily judge the relationship; however it reasonably predicts the 1991 Uttarkashi earthquake (M w=6.8) and 1999 Chamoli earthquake (M w=6.4) from Garhwal Himalaya region.
Highlights Key seismic parameters used to model Garhwal Himalaya earthquakes. Modeling uncertainty is estimated from simulated and actual response spectra. Ground motion predictive equation is proposed based on generated synthetic scenarios. Proposed predictive equation is validated against Indian and NGA equations. Study provides an alternative to unavailability of local predictive equations.
Earthquake ground motion predictive equations for Garhwal Himalaya, India
Harbindu, Ashish (Autor:in) / Gupta, Sushil (Autor:in) / Sharma, M.L. (Autor:in)
Soil Dynamics and Earthquake Engineering ; 66 ; 135-148
17.06.2014
14 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Earthquake ground motion predictive equations for Garhwal Himalaya, India
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