沈阳台水平摆倾斜仪与超宽频带地震仪对比观测分析

Comparison Analysis of Waveform Observation Between Horizontal Pendulum in Clinometer and Ultra Broadband Seismometer in Shenyang Seismic Station

资料筛选2013年到2017年地震及自然因素案例,对沈阳地震台SSQ-2I石英水平摆倾斜仪及JCZ-1T超宽频数字地震仪的波形数据进行分析.结果表明,沈阳台SSQ-2I型石英水平摆倾斜仪与JCZ-1T型超宽频带地震仪在主要频带内对地面运动的响应程度具有一致性,但并不是所有情况下均存在一致响应,这可能是由于两套仪器的观测物理量不同、 灵敏度不同等造成的.超宽频带地震仪和倾斜仪对地震波响应的特性,为倾斜观测中阶变突跳等异常变化性质的判定提供了物理学指标,对形变观测中可能出现的地震前兆异常的认识及判定具有重要意义.

Based on the Data Screening of Earthquakes and Natural Factor Cases from 2013 to 2017,the waveform data of SSQ-2I quartz horizontal pendulum inclinometer and JCZ-1T ultra broadband seismometer in Shenyang Seismic Station were analyzed.The results show that the response of SSQ-2I type quartz horizontal pendulum inclinometer and JCZ-1T ultra broadband seismometer to ground motion is consistent in the main frequency band.However,the response is not uniform in all cases,which may be caused by the different physical quantities and sensitivity of the two sets of instruments.The characteristics of ultra broadband seismometer and inclinometer in response to seismic waves provide physical indexes for the determination of abnormal change properties such as order variation and jump in tilt observation.It is of great significance to recognize and judge possible earthquake precursor anomalies in deformation observation.