Journal of Earth System Science

, Volume 116, Issue 3, pp 199–214

Estimation of seismic spectral acceleration in Peninsular India

  • S. T. G. Raghu Kanth
  • R. N. Iyengar

DOI: 10.1007/s12040-007-0020-8

Cite this article as:
Raghu Kanth, S.T.G. & Iyengar, R.N. J Earth Syst Sci (2007) 116: 199. doi:10.1007/s12040-007-0020-8


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.


Attenuationresponse spectraPeninsular Indiasite coefficients

Copyright information

© Indian Academy of Sciences 2007

Authors and Affiliations

  • S. T. G. Raghu Kanth
    • 1
  • R. N. Iyengar
    • 2
  1. 1.Department of Civil EngineeringIndian Institute of TechnologyGuwahatiIndia
  2. 2.Department of Civil EngineeringIndian Institute of ScienceBangaloreIndia