TY - GEN
T1 - Application of the Specific Barrier Model to the simulation of earthquake strong ground motions
AU - Halldorsson, Benedikt
AU - Papageorgiou, Apostolos S.
PY - 2006
Y1 - 2006
N2 - The Specific Barrier Model provides a complete, yet parsimonious, self-consistent description of the heterogeneous earthquake faulting process. It assumes that the seismic moment is distributed in a deterministic manner on the fault plane, and is released through the incoherent rupture ofidentical "subevents" that fill the fault plane. Thus, the model can be applied in the "near-fault", as well as in the "far-field" region and has recently been calibrated using an extensive database of earthquake events representing three tectonic regimes (Halldorsson and Papageorgiou, 2005a). Using the parameters ofthe model that were obtained from the above calibration, we simulate time histories for a number of earthquake events that were well recorded, cover a wide magnitude range (M 5.9-7.9), and are representative samples ofdifferent source mechanisms. The stochastic approach is applied to synthesize the incoherent part ofnear- and far-ield strong ground motion while the deterministic/coherent part ofnear-field strong motions is simulated using a recently proposed mathematical model ofnear-fault velocity pulses. We compare the simulations with the recorded data, both in the time and frequency domain and thus evaluate the overall performance of the model. It is shown that the model provides on the average unbiased predictions over a wide frequency range (0.1-20 Hz) of earthquake strong ground motions. Thus, the Specific Barrier Model can be utilized as an effective tool for providing time histories of near-fault and far-ield earthquake ground motions that can be used with conidence by earthquake engineers in aseismic design.
AB - The Specific Barrier Model provides a complete, yet parsimonious, self-consistent description of the heterogeneous earthquake faulting process. It assumes that the seismic moment is distributed in a deterministic manner on the fault plane, and is released through the incoherent rupture ofidentical "subevents" that fill the fault plane. Thus, the model can be applied in the "near-fault", as well as in the "far-field" region and has recently been calibrated using an extensive database of earthquake events representing three tectonic regimes (Halldorsson and Papageorgiou, 2005a). Using the parameters ofthe model that were obtained from the above calibration, we simulate time histories for a number of earthquake events that were well recorded, cover a wide magnitude range (M 5.9-7.9), and are representative samples ofdifferent source mechanisms. The stochastic approach is applied to synthesize the incoherent part ofnear- and far-ield strong ground motion while the deterministic/coherent part ofnear-field strong motions is simulated using a recently proposed mathematical model ofnear-fault velocity pulses. We compare the simulations with the recorded data, both in the time and frequency domain and thus evaluate the overall performance of the model. It is shown that the model provides on the average unbiased predictions over a wide frequency range (0.1-20 Hz) of earthquake strong ground motions. Thus, the Specific Barrier Model can be utilized as an effective tool for providing time histories of near-fault and far-ield earthquake ground motions that can be used with conidence by earthquake engineers in aseismic design.
UR - http://www.scopus.com/inward/record.url?scp=84865835758&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84865835758
SN - 9781615670444
T3 - 8th US National Conference on Earthquake Engineering 2006
SP - 8019
EP - 8028
BT - 8th US National Conference on Earthquake Engineering 2006
T2 - 8th US National Conference on Earthquake Engineering 2006
Y2 - 18 April 2006 through 22 April 2006
ER -