Title: Probabilistic seismic hazard assessment of district headquarters of Kashmir Valley in Jammu and Kashmir, India
Authors: Fida Anjum; Shaista Jan; Yawar Mushtaq Raina
Addresses: Department of Civil Engineering, Islamic University of Science and Technology, Awantipora, Pulwama, 192122, Jammu and Kashmir, India ' Hindustan Petroleum Corporation Limited (HPCL), Pampore, Pulwama, 192121, Jammu and Kashmir, India ' Public Works (R&B) Department, Division Rajouri, 185131, Government of Jammu and Kashmir, India
Abstract: This study aims at characterising the probable 99 faults of region by carrying out the probabilistic seismic hazard analysis for different districts of Kashmir valley by preparing seismic hazard curves and the contour maps of three ground motion parameters, namely, peak ground acceleration (PGA), short period Sa (0.02 s) and long period Sa (1.0 s) spectral acceleration for 50, 100, 500 and 2,500 years return periods using the Atkinson and Boore (2006) GMPM and an updated catalogue containing event records till April 2018. On comparison with the earlier studies it was found that there is the need to consider the local site variability in the hazard computation. Shopian, Budgam, Baramulla and Kupwara were found to have much higher seismic hazard levels as compare to other districts. The estimated hazard values for these regions highlights that the zonal spectral values are underestimated in the Indian Codal provisions. The maps, hazard curves and UHRS so developed can be used for assessing the seismic vulnerability of the existing structures and constructing risk maps for the selected areas.
Keywords: seismicity; earthquake; Kashmir Valley; faults; contour maps; Himalaya; rocks; peak ground acceleration; PGA; short period; long period; spectral acceleration; India.
International Journal of Earthquake and Impact Engineering, 2020 Vol.3 No.1, pp.60 - 79
Received: 10 May 2019
Accepted: 29 Aug 2019
Published online: 26 Feb 2020 *