摘要
在分析强震观测与微震观测本质区别的基础上,以已知的地震波强度资料为参照,通过对比FBS-3B型微震计及BBAS-2型强震加速度计的仪器噪声,揭示了仪器噪声、响应类型对两种仪器检测灵敏度的影响.我们对小湾台网记录到的一次微震进行了模拟计算.用正弦子波叠加合成地震记录作为地震计摆体响应方程的输入,通过计算,获得了微震计和强震加速度计的输出.对输入和输出数据进行分析,证明了两种仪器对远震长周期信号的监测能力存在显著差异,这种差异来源于强震计与微震计检测下限的不同.
With some known typical seismic data as reference, we analyzed the essential differences between strong motion observation and small earthquake observation, and compared the electric noises of FBS-3B seismometer and BBAS-2 accelerator. We carried out a synthetic simulation using the data of a small earthquake recorded by Xiaowan network. The result reveals the influ- ence of electric noise and response type of the sensors on their sensitivities to ground motion. With asynchronous synthetic sine waves as input of a pendulum response equation, the output of a seismometer and accelerator is obtained. The sensitivities of the sensors to a tele-seismic wave prove to be quite different and it is this difference that leads to the distinction of recorded data.
出处
《地震学报》
CSCD
北大核心
2012年第5期667-675,共9页
Acta Seismologica Sinica
基金
云南省自然科学基金面上项目"暂态对单自由度体系地震动力响应的影响研究"(2008CD220)资助
关键词
强震计
微震计
数据仿真
数据差异
strong motion accelerator
seismometer
simulation record
distinction of records
作者简介
通讯作者:崔庆谷,email:cqg000123@yahoo.com.cn
