Stochastic finite-fault modeling of Mw 5.4 earthquake along Uttarakhand-Nepal border

被引：31

作者：

Mittal, Himanshu ^{[1
]}

Kumar, Ashok ^{[2
]}

机构：

[1] Indian Inst Technol Roorkee, Ctr Excellence Disaster Mitigat & Management, Roorkee 247667, Uttar Pradesh, India

[2] Indian Inst Technol Roorkee, Dept Earthquake Engn, Roorkee 247667, Uttar Pradesh, India

来源：

NATURAL HAZARDS | 2015年 / 75卷 / 02期

关键词：

Stochastic; Uttarakhand; Spectral acceleration; Synthesis; Site effects; GROUND-MOTION PREDICTION; GREAT EARTHQUAKE; 1991; UTTARKASHI; RUPTURE LENGTH; SPECTRAL RATIO; HIMALAYA; DELHI; INDIA; SIMULATION; MAGNITUDE;

D O I：

10.1007/s11069-014-1367-1

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

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: 995-1010, 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.

引用

页码：1145 / 1166

页数：22