Wenchuan 8.0 Magnitude Earthquake Acceleration Peak Attenuation RelationshipBased on A “Mapping Circle” Model

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Journal of Vibration and Shock ›› 2013, Vol. 32 ›› Issue (3) : 75-78.

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Wenchuan 8.0 Magnitude Earthquake Acceleration Peak Attenuation RelationshipBased on A “Mapping Circle” Model

LIU Ping1，LUO Qi-feng2

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Abstract

At present, there are three ground motion attenuation relationship models which exist some shortage, including the circle model, the fault-rupture model and the ellipsoid model. Based on assuming some linear relation between intensity and ground motion, and compressing the fault-rupture to epicenter, then the intensity isoseismic map would have the character of the circle model. Describe this process through the mapping method of ground motion estimation, and define this model as “mapping circle” model. Taking Wenchuan earthquake for an instance, regress three models respectively, including the circle model, the fault-rupture model, and the “mapping circle” model. The accuracy of the “mapping circle” model is more ideal than others.

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ground motion attenuation relationship / circle model / fault-rupture model / “mapping circle” model / Wenchuan earthquake

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LIU Ping;LUO Qi-feng. Wenchuan 8.0 Magnitude Earthquake Acceleration Peak Attenuation RelationshipBased on A “Mapping Circle” Model[J]. Journal of Vibration and Shock, 2013, 32(3): 75-78