Finite-Fault Simulation of Broadband Strong Ground Motion from the 2010 Mw 7.0 Haiti Earthquake

2013 ◽  
Vol 103 (5) ◽  
pp. 2557-2576 ◽  
Author(s):  
G. P. Mavroeidis ◽  
C. M. Scotti
Keyword(s):  
Ground Motion ◽  
Strong Ground Motion ◽  
Fault Simulation ◽  
Haiti Earthquake ◽  
Finite Fault ◽  
Strong Ground

A fault model with variable slip duration for the 1989 Loma Prieta, California, earthquake determined from strong-ground-motion data

1996 ◽  
Vol 86 (1A) ◽  
pp. 122-132
Author(s):  
Stephen Horton
Keyword(s):  
Ground Motion ◽  
Strong Ground Motion ◽  
Propagation Rate ◽  
Fault Model ◽  
Fault Surface ◽  
Loma Prieta Earthquake ◽  
Motion Data ◽  
Finite Fault ◽  
Loma Prieta ◽  
Strong Ground

Abstract A finite-fault model with variable slip duration is inferred from strong-ground-motion data for the Loma Prieta earthquake. Unlike previous models, slip duration is found to be consistent with fault width scaling. Slip duration varies between 1 and 6 sec at points along the fault surface with values between 3 and 6 sec, where slip amplitudes obtain or exceed the average slip of 98 cm. Modest high-frequency modifications of the slip function shape greatly enhance the data fit without significantly changing the inferred static offset or rupture characteristics. This model exhibits bilateral rupture with the propagation rate of the main energy release of 3 km/sec or less. The moment is 2.3 × 1026 dyne-cm, and the largest slip amplitudes occur northwest of the hypocenter. The rake varies with position along the fault from dominantly strike slip in the southeast to dominantly reverse slip in the northwest.

Comparison of Loss Estimation for Various Seismic Source Models: The Case of the 1995 Hyogo-ken Nanbu Earthquake

2003 ◽  
Vol 19 (1) ◽  
pp. 67-85
Author(s):  
Ken Hatayama ◽  
Shinsaku Zama
Keyword(s):  
Ground Motion ◽  
Strong Ground Motion ◽  
Seismic Source ◽  
Loss Estimation ◽  
Kobe Earthquake ◽  
Finite Fault ◽  
Seismic Source Models ◽  
Future Earthquake ◽  
Source Models ◽  
Strong Ground

We compare the distribution of damage to housing caused by the 1995 Hyogo-ken Nanbu (Kobe) earthquake with those estimated for several source models proposed for this earthquake. This comparison aims at identifying source models that can provide loss estimates that are most appropriate for planning emergency response activities just after earthquakes and/or for preparing effective countermeasures for mitigation of future earthquake disasters. The results suggest the necessity of finite-fault slip models that can reproduce or predict accurately strong ground motion within a frequency range closely related to damage. The loss estimation just after earthquakes based on source models can be counted on in areas without dense strong-ground-motion observation networks. Even with the dense networks, source models will also be useful for accurate loss estimation in the immediate vicinity of earthquake source faults.

Seismic Hazard Assessment of Hengshui Area by the Modified Stochastic Finite Fault Modeling

2015 ◽  
Vol 744-746 ◽  
pp. 894-897
Author(s):  
Bo Yan Liu ◽  
Wen Hao Shen ◽  
Bao Ping Shi
Keyword(s):  
Seismic Hazard ◽  
Ground Motion ◽  
Hazard Assessment ◽  
Strong Ground Motion ◽  
Seismic Hazard Assessment ◽  
Peak Ground Velocity ◽  
Finite Fault ◽  
Scenario Earthquakes ◽  
The Impact ◽  
Strong Ground

In recent years, numerical simulation of strong ground motion has been well developed with the progress of earthquake science, and it has become an important approach to estimate strong ground motion. In this research, we improve the original program of EXSIM and the modified program named MEXSIM to calculate the Peak Ground Acceleration (PGA) and Peak Ground Velocity (PGV) which is essential for seismic hazard assessment of Hengshui area. Considering the impact of V30(the average shear-velocity down to 30 m) we calculate the impact of two scenario earthquakes from the rupture processes of Hengshui fault and Qianmotou fault. Comparing to Qianmotou scenario earthquake, if the instability fault is Hengshui fault, the PGA and PGV could be 200-360gal and 20-35cm/s respectively in Hengshui city.

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