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
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
收藏
页码:1145 / 1166
页数:22
相关论文
共 63 条
[1]  
Ambraseys N, 2003, CURR SCI INDIA, V84, P570
[2]  
ANDERSON JG, 1984, B SEISMOL SOC AM, V74, P1969
[3]  
[Anonymous], 2002, CRIT EARTHQ RES DES
[4]   Earthquake ground-motion prediction equations for eastern North America [J].
Atkinson, Gail M. ;
Boore, David M. .
BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA, 2006, 96 (06) :2181-2205
[5]  
Beresnev I.A., 1998, SEISM RES LETT, V69, P27, DOI DOI 10.1785/GSSRL.69.1.27
[6]  
Beresnev IA, 1998, B SEISMOL SOC AM, V88, P1392
[7]   Properties of vertical ground motions [J].
Beresnev, IA ;
Nightengale, AM ;
Silva, WJ .
BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA, 2002, 92 (08) :3152-3164
[8]  
Beresnev IA, 1999, B SEISMOL SOC AM, V89, P608
[9]  
Beresnev IA, 1997, SPECTRUM B SEISMOL S, V87, P67
[10]   Earthquakes - Himalayan seismic hazard [J].
Bilham, R ;
Gaur, VK ;
Molnar, P .
SCIENCE, 2001, 293 (5534) :1442-1444