Stochastic finite-fault modeling of M w 5.4 earthquake along Uttarakhand–Nepal border
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- 作者：Himanshu Mittal (1)
Ashok Kumar (2) - 关键词：Stochastic ; Uttarakhand ; Spectral acceleration ; Synthesis ; Site effects
- 刊名：Natural Hazards
- 出版年：2015
- 出版时间：January 2015
- 年：2015
- 卷：75
- 期：2
- 页码：1145-1166
- 全文大小：2,348 KB
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Ashok Kumar (2)
1. Centre of Excellence in Disaster Mitigation and Management, Indian Institute of Technology Roorkee, Roorkee, 247667, India
2. Department of Earthquake Engineering, Indian Institute of Technology Roorkee, Roorkee, 247667, India - ISSN：1573-0840
文摘
In this work, an attempt has been made to simulate strong ground motion of M w 5.4 earthquake in Kumaun region of Uttarakhand. The simulation is based on modified stochastic finite modeling technique with dynamic corner frequency (Motazedian and Atkinson in Bull Seismol Soc Am 95:995-010, 2005). Ground motion is simulated for 24 sites, where a magnitude 5.4 earthquake was recorded. Synthesized ground motion is found in close agreement with recorded ones, when compared in terms of main characteristics such as peak ground acceleration (PGA), Fourier spectra, response spectra and duration. Decay of PGA values with distance is almost same as that of observed ones. Successful modeling of present earthquake gives the confidence to understand and quantify seismic hazard of different parts of Uttarakhand from earthquakes of different magnitudes.