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测震数采仪记录的钻孔应变
杨选辉,杨树新,张彬,张国红,刘福生,柳艳智,王勇
作者单位
杨选辉 Institute of Crustal Dynamics, CEA, Beijing 100085 , China 
杨树新 Institute of Crustal Dynamics, CEA, Beijing 100085 , China 
张彬 Institute of Crustal Dynamics, CEA, Beijing 100085 , China 
张国红 Institute of Crustal Dynamics, CEA, Beijing 100085 , China 
刘福生 Institute of Crustal Dynamics, CEA, Beijing 100085 , China 
柳艳智 Institute of Crustal Dynamics, CEA, Beijing 100085 , China 
王勇 Institute of Crustal Dynamics, CEA, Beijing 100085 , China 
摘要:
采用测震仪数采器在昌平台站开展了高频采集实验,对原来1次/分钟采样的钻孔应变仪输出进行100次/秒采样。记录到大量丰富的信息,计算了高频采样获得的应变记录分钟值后,发现与原来的1次/分钟采样变化曲线趋势完全吻合。高频采样获得的应变地震波更加完整,细节更为清晰。通过应变地震波计算得到的震相参数,与前人所得结果一致。与十三陵地震台测震仪记录的地震波比较,二者的波谱相似,且应变地震波中还存在低频成份。
关键词:  钻孔应变仪 测震数采 高频采集 采样率 应变地震波
DOI:
分类号:
基金项目:
Strains Recorded Using a Seismometer Data Acquisition Unit
Yang Xuanhui,Yang Shuxin,Zhang Bin,Zhang Guohong,Liu Fusheng,Liu Yanzhi,Wang Yong
Abstract:
A seismometer data acquisition unit has been used in the Changping seismic station to record the output of a strainmeter. The output of a strainmeter was sampled at a rate of 100/sec by seismometer acquisition from the original rate of 1 per minute. Plenty of high frequency sampled data was recorded. The minute value curve calculated from the seismometer acquisition are consistent with that of the original data sampled by the strain acquisition system. More complete waveforms were recorded with a higher sampling rate, and seismic phase parameters calculated by using higher sampling rate strain seismic waves are also in consistency with the results of its predecessors. Spectra of the strain seismic waves are compared with that of seismic waves recorded by a seismometer in the Shisanling seismic station, and their trends are almost the same. Besides, some lower frequency components stiil exist in strain seismic waves.
Key words:  Borehole strainmeter  Seismometer data acquisition  High-frequency Sampling  Sampling rate  Strain seismic wave