【摘要】 1994年7月中国地震局工程力学研究所在唐山余震区响堂镇建成了我国第一个三维场地影响观测台阵。该台阵目前有四个测点，分别布设在基岩地表、上层地表、地下17m和地下32m处。它安装了分辨率为16位的井下数字观测系统，主机和从机同步运行，系统时钟采用Omega导航信号自动校对（精度1ms），地震数据采用固态方式（CMOS）存储，每个测点均布设一组三分量力平衡式加速度计。该台阵自投入运行至1997年12月已取得了60个包括不同深度的地震加速度记录（ML＝1.5～5．9），最大地表峰值加速度为60．11cm/s2。这些记录震相完整，波形清楚，计时准确，为进行局场地条件对地震动影响的研究提供了宝贵的数据基础。更多还原

【Abstract】 An experimental three dimensional strong-motion array was deployed in 1994 at the Xiangtang Town in the Tangshan City where a destructive earthquake of M7.8 occurred in 1976 and completely destroyed the whole city. This array was designed to study the local soil effects on seismic ground motion. It composed of five digital strong-motion accelerographs with two on the surface rock site and other three on soil site with different depths in the boreholes.Among these five digital instruments, one was Japanese Model of CV-90lVR and the others including the down-hole system were all purchased from the Kinemetrics Ltd. of the United States. Installation of this local array was completed by the end of July 1994. Since then a number of strong-motion accelerograms were well recorded from sixty earthquakes of magnitudes ML1.5 to ML5.9 and the maximum peak ground acceleration reached up to 60cm/sec/sec.更多还原