Estimation of seismic spectral acceleration in Peninsular India |
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| Authors: | S T G Raghu Kanth R N Iyengar |
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| Institution: | (1) Department of Civil Engineering, Indian Institute of Technology, Guwahati, 781 039, India;(2) Department of Civil Engineering, Indian Institute of Science, Bangalore, 560 012, India |
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| Abstract: | Peninsular India (PI), which lies south of 24°N latitude, has experienced several devastating earthquakes in the past. However,
very few strong motion records are available for developing attenuation relations for ground acceleration, required by engineers
to arrive at rational design response spectra for construction sites and cities in PI. Based on a well-known seismological
model, the present paper statistically simulates ground motion in PI to arrive at an empirical relation for estimating 5%
damped response spectra, as a function of magnitude and source to site distance, covering bedrock and soil conditions. The
standard error in the proposed relationship is reported as a function of the frequency, for further use of the results in
probabilistic seismic hazard analysis. |
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| Keywords: | Attenuation response spectra Peninsular India site coefficients |
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