近断层强地震动预测中的有限断层震源模型

王海云; 谢礼立; 陶夏新

Volume 33 Issue 6

Jun. 2008

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Article Navigation > Earth Science > 2008 > 33(6): 843-851

WANG Hai-yun, XIE Li-li, TAO Xia-xin, 2008. Finite Fault Source Model for Predicting Near-Fault Strong Ground Motion. Earth Science, 33(6): 843-851.

Citation:

WANG Hai-yun, XIE Li-li, TAO Xia-xin, 2008. Finite Fault Source Model for Predicting Near-Fault Strong Ground Motion. Earth Science, 33(6): 843-851.

WANG Hai-yun, XIE Li-li, TAO Xia-xin, 2008. Finite Fault Source Model for Predicting Near-Fault Strong Ground Motion. Earth Science, 33(6): 843-851.

Citation:

WANG Hai-yun, XIE Li-li, TAO Xia-xin, 2008. Finite Fault Source Model for Predicting Near-Fault Strong Ground Motion. Earth Science, 33(6): 843-851.

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Finite Fault Source Model for Predicting Near-Fault Strong Ground Motion

WANG Hai-yun^{1, 2
,},
XIE Li-li^{1, 2},
TAO Xia-xin^{2, 1}

1.
Institute of Engineering Mechanics, China Earthquake Administration, Harbin 150080, China
2.
School of Civil Engineering, Harbin Institute of Technology, Harbin 150001, China

Received Date: 2007-12-31
Publish Date: 2008-11-25

Abstract

Abstract

A new method and steps of setting up a finite fault source model of a scenario earthquake on an active fault for predicting near-fault strong ground motion are proposed here. Firstly,spatial orientation and slip type of the active fault are deduced from data of seismic geology,seismicity,and geophysics exploration and so on.Secondly,macro-source parameters of the active fault are inferred from seismic scaling laws.Thirdly,the hybrid slip model on the fault plane is generated by combining the asperity model with k square slip model.On the basis of the above mentioned,the finite fault source model of a scenario earthquake(its fault type and moment magnitude the same as 1994 Northridge earthquake's,i.e.,the reverse fault and M_w6.7) is predicted consequently.Lastly,combining the finite fault source model predicted by mentioned-above with stochastic method of synthesizing ground motion using dynamic corner frequency based on seismology,we predict acceleration time histories of the 12 stations during 1994 Northridge earthquake.And comparison between predicted and recorded acceleration time histories shows that the above-mentioned method and the steps of modeling finite fault source model are feasible and practicable.
- active fault,
- asperity,
- finite fault source model,
- near-fault,
- stochastic method of synthesizing ground motion

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References(38)

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