西北地震学报2011，Vol.33Issue(2)：171-176,6.
兰州观象台存放台阵汶川Ms8.0强震动记录与分析
Strong Motion Records of Paking Array in Lanzhou Earth Observatary for Wenchuan Ms8.0 Earthquake and Prelimitary Analysis
摘要
Abstract
Paking array in Lanzhou Earth Observatary obtained ten groups of 3-directions strong ground motion records from the main shock of great Wenchuan earthquake. Based on the records the acceleration time history and characteristics of ground motion in loess site are studied. The result shows that peak ground acceleration (PGA) at different point in a small area of same site, with same seismic source and epicentral distance, had a certain degree of difference which obviously effected by site topography. In all ten strong motion observation points, PGA in EW direction were largest and PGA in the vertical direction were smallest. The difference of Fourier spectra in different points, especially for frequencies less than 1 Hz, is insignificant.关键词
汶川大地震/地震动/兰州观象台存放台阵/强震动记录Key words
Wenchuan great earthquake/ Ground motion/ Paking array in Lanzhou Earth Observatary / Strong ground-motion record分类
天文与地球科学引用本文复制引用
卢大伟,姚凯,闵祥仪,王东彬..兰州观象台存放台阵汶川Ms8.0强震动记录与分析[J].西北地震学报,2011,33(2):171-176,6.基金项目
国家科技支撑计划课题(2009BAK55B05) （2009BAK55B05）
