福建长乐人工震源波的观测与分析

The observation and analysis of the seismic waves of man-made explosion source in Changle, Fujian

使用DCS-302数字磁带记录地震仪在近场(震中距△≤5km)观测人工爆破源产生的地震波,在不同方位、不同震中距和土层条件下得到了9条近场地面运动加速度记录。通过回放及计算机处理研究了近场爆破地震波记录波形特征、频谱特性、振幅特征、衰减情况以及加速度最大幅值和相应的卓越周期。

Nine seismograph maps of near-field ground acceleration ,seismic waves from man-made explosion seismic source, were recorded by DCS-302 portable digital seismometers which were located at different sites where direction ,epicentral distance and soil conditions are different。The wave property, including frequency ,amplitude,attenuation rate ,maximum value of acceleration and predominant period ,were analyzed in a computer with reproducing signals.