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Ground Motion Prediction Equation For Earthquakes Along The Western Himalayan Arc


Affiliations
1 CSIR-National Geophysical Research Institute, Uppal Road, Hyderabad 500 007, India
2 Universidad Nacional Autónoma de México. Instituto de Geofísica, Circuito de la Investigación s/n, Ciudad Universitaria, Coyoacán, Mexico City 04510, Mexico
3 Departamento de Materiales, Universidad Autónoma Metropolitana, Avenida San Pablo 180, Reynosa Tamaulipas, Azcapotzalco, Mexico City 02200, Mexico
4 National Centre for Seismology, India, Mausam Bhavan Complex, Lodi Road, New Delhi 110 003, India
 

A critical element in seismic hazard estimation is the ground motion prediction equation (GMPE) which relates expected seismic intensity at a point from an earthquake of a given magnitude and location. Presently available GMPEs for plate interface thrust earthquakes along the Himalayan arc suffer from limited number of strong motion recordings used in their derivation. In this study we use a larger dataset, including recordings from the 2015 Gorhka, Nepal earthquake (Mw 7.9) and some of its larger aftershocks, to derive GMPE for earthquakes along the Western Himalayan arc. The proposed GMPE should give more reliable estimation of ground motion parameters at hard sites along the arc and in Peninsular India, and at soft sites in the Indo-Gangetic Plains.

Keywords

Active Tectonics, Ground Motion Prediction Equation, Plate Interface Earthquake, Seismic Hazard.
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  • Ground Motion Prediction Equation For Earthquakes Along The Western Himalayan Arc

Abstract Views: 513  |  PDF Views: 140

Authors

Srinagesh
CSIR-National Geophysical Research Institute, Uppal Road, Hyderabad 500 007, India
S. K. Singh
Universidad Nacional Autónoma de México. Instituto de Geofísica, Circuito de la Investigación s/n, Ciudad Universitaria, Coyoacán, Mexico City 04510, Mexico
D. Arroyo
Departamento de Materiales, Universidad Autónoma Metropolitana, Avenida San Pablo 180, Reynosa Tamaulipas, Azcapotzalco, Mexico City 02200, Mexico
D. Srinivas
CSIR-National Geophysical Research Institute, Uppal Road, Hyderabad 500 007, India
G. Suresh
National Centre for Seismology, India, Mausam Bhavan Complex, Lodi Road, New Delhi 110 003, India
G. Suresh
CSIR-National Geophysical Research Institute, Uppal Road, Hyderabad 500 007, India

Abstract


A critical element in seismic hazard estimation is the ground motion prediction equation (GMPE) which relates expected seismic intensity at a point from an earthquake of a given magnitude and location. Presently available GMPEs for plate interface thrust earthquakes along the Himalayan arc suffer from limited number of strong motion recordings used in their derivation. In this study we use a larger dataset, including recordings from the 2015 Gorhka, Nepal earthquake (Mw 7.9) and some of its larger aftershocks, to derive GMPE for earthquakes along the Western Himalayan arc. The proposed GMPE should give more reliable estimation of ground motion parameters at hard sites along the arc and in Peninsular India, and at soft sites in the Indo-Gangetic Plains.

Keywords


Active Tectonics, Ground Motion Prediction Equation, Plate Interface Earthquake, Seismic Hazard.

References





DOI: https://doi.org/10.18520/cs%2Fv120%2Fi6%2F1074-1082