地震计仪器噪声测量中的几个问题  

Several issues about the measurement of a seismometer's self-noise

作　　者：崔庆谷[1] 童汪练[1] 

机构地区：[1]中国地震局港震机电技术有限公司,中国北京100036

出　　处：《地震地磁观测与研究》2003年第6期39-46,共8页Seismological and Geomagnetic Observation and Research

摘　　要：研究了地震计仪器噪声测量中的几个问题,并从理论、模型仿真和测量实验3个方面证实了下述结论:①平稳地噪声中,两台并列地震计的通频带差异、灵敏度差异及阻尼系数差异对测量结果没有影响;②非平稳的地背景噪声和干扰必然引起测量误差;③地震计自身噪声测量必须在安静的台基上进行。Several issues about the measurement of a seismometer's self-noise are researched and the conclusions are: (1) The difference of the pass-band width, the sensitivity and the damping coefficient of the aligned seismometers has no influence on the measurement result. (2) Transient disturbance will cause measurement error. (3) The measurement of a seismometer's self-noise must be carried out in a noiseless station.

关 键 词：地震计 仪器噪声 噪声测量 相关系数 功率谱密度 

分 类 号：P315.6[天文地球—地震学]