BARUAH , S and BARUAH , SANTANU and KALITA , A and KAYAL , R J
(2011)
Ground motion parameters in Shillong and Mikir Plateau supplemented by mapping of amplification factors in Guwahati City, Northeastern India.
Journal of Asian Earth Sciences, 42 (6).
pp. 1424-1436.
Abstract
Ground motion parameters for Shillong–Mikir Plateau of Northeastern India are examined. Empirical
relations are obtained for ground motions as a function of earthquake magnitude, fault type, source
depth, velocity characterization of medium and distance. Correlation between ground motion
parameters and characteristics of seismogenic zones are established. Simultaneously, new empirical
relations are derived for attenuation of ground motion amplitudes. Correlation coefficients of the
attenuation relations depend on the site classifications that are identified based on average shear
wave velocity and site response factors. The attenuation relation estimated for logarithmic width of
Mikir Plateau found to be a little bit higher than that of Shillong Plateau both for soft and hard ground
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