Ground-motion prediction equations based on data from the Himalayan and Zagros region

Mukatlal Sharma (1) , John Douglas (2) , Hilmar Bungum (3, 4) , Jainish Kotadia (1)

1 Department of Earthquake Engineering [Roorkee]
2 BRGM - Bureau de Recherches Géologiques et Minières (BRGM)
3 International Centre for Geohazards
4 NORSAR

This study derives ground-motion prediction equations for the horizontal elastic response spectral acceleration for 5% damping for application to the Indian Himalayas. The present equations include a consideration of site category (rock/soil) and style-of-faulting (strike-slip/reverse). Due to a lack of near-field data from India, additional strong-motion data have been included from the Zagros region of Iran, which has comparable seismotectonics to the Himalayas (continental compression). A set of 201 records from 16 earthquakes were used within the regression. The derived model predicts similar ground motions to previously published equations for the Himalayan region but with lower standard deviations.

Mots clés: ground-motion prediction equations; strong-motion data; India; Iran; Himalayas

Domaines: Sciences de la Terre

Mukatlal Sharma, John Douglas, Hilmar Bungum, Jainish Kotadia. Ground-motion prediction equations based on data from the Himalayan and Zagros region. Journal of Earthquake Engineering, 2009, 13 (8), p. 1191-1210. ⟨10.1080/13632460902859151⟩. ⟨hal-00502687⟩