【摘要】 利用2008年5月12日四川汶川8.0级地震山西数字强震动台网27个台的地震记录分析研究了水平向矢量合成加速度峰值PGAH与水平单分向加速度峰值PGAE-W和PGAN-S的关系,结果表明:PGAE-W和PGAN-S中较大值与PGAH比较接近,平均相对偏差为9%。因此,在某些有关地震加速度峰值的研究中,简单地采用PGAE-W和PGAN-S中较大值近似地代替水平加速度峰值PGAH是合理的。更多还原

【Abstract】 Based on the earthquake records obtained from 27 seismic stations of Shanxi Digital Strong Motion Network for the 12th May,2008 Wenchuan,Sichuan,earthquake of M8.0,the relationship between horizontal peak ground acceleration of single component PGAE-W and PGAN-S and their vector composition PGAH is studied.The results indicate that the larger one of PGAE-W and PGAN-S is quite close to PGAH,and average relative deviation is 9%.So it is reasonable to simply use the larger one of PGAE-W and PGAN-S to approximately replace the horizontal PGAH as doing some researches regarding to seismic peak ground acceleration.更多还原