New generation ground motion attenuation model for western China

作者：Zhang Qi; Hu Jinjun^*; Xie Lili; Jiang Zhijun

来源：Journal of Tianjin University, 2013, 46(12): 1079-1088.

DOI：10.11784/tdxb20131205

• Ground motion attenuation model
• Next generation attenuation model
• Random effect regression
• Residual analysis
• Wenchuan earthquake

Based on the records from Wenchuan earthquakes and selected world-wide earthquakes, a new ground motion attenuation model considering the effect of rupture mechanism of fault, site condition and hanging wall/footwall effect was developed for western China utilizing residual analysis method. The parameters were determined by random effect regression. The analytical results show that the model predicted values for Wenchuan earthquake Ms8.0 at the distance less than 200 km are highly consistent with the ground motions observed except for some slightly over-predicted values at long periods. Compared with the average predicted spectra of four next generation attenuation (NGA) models, the predicted spectra of our newly-developed model provide similar ground motions at short periods (T<1 s) but smaller ground motions at long periods (T≤2 s).

• 出版日期2013
• 单位中国地震局