Regional stochastic ground-motion model for low to moderate seismicity area with variable seismotectonic: application to Peninsular India

Bajaj, Ketan and Anbazhagan, P (2019) Regional stochastic ground-motion model for low to moderate seismicity area with variable seismotectonic: application to Peninsular India. In: BULLETIN OF EARTHQUAKE ENGINEERING, 17 (7). pp. 3661-3680.

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Abstract

A new stochastic ground motion prediction equation (GMPE) for low and diverse seismicity region, i.e., Peninsular India has been derived for a wide range of magnitude (Mw 4-8) and distance (10-500km). Source, path, and site terms have been determined by comparing the recorded and simulated response spectra using derived values from the literature. Uncertainty has been assessed through simulation by random sampling of the corresponding distribution of all the input parameters. To capture the non-uniform seismicity of Peninsular India, GMPE has been derived using constant stress and variable stress model. The synthetic data has been regressed using linear mixed-effect model algorithm by determining the functional form that is compatible for magnitude and distance scaling. Sensitivity analysis has been used in determining the impact of uncertainty of each input parameter on GMPE standard deviation. Further, new GMPEs have been validated using the recorded ground-motion data.

Item Type:	Journal Article
Publication:	BULLETIN OF EARTHQUAKE ENGINEERING
Publisher:	SPRINGER
Additional Information:	copyright for this article belongs to SPRINGER
Keywords:	Peninsular India; Seismicity; GMPE; Intra plate; Crossed and nested regression
Department/Centre:	Division of Mechanical Sciences > Civil Engineering
Date Deposited:	02 Aug 2019 05:52
Last Modified:	02 Aug 2019 05:52
URI:	http://eprints.iisc.ac.in/id/eprint/63174

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