钻孔体应变高采样率观测实验  

ON HIGH SAMPLE RATE OF BOREHOLE VOLUME STRAINMETER OBSERVATION

作　　者：郭燕平[1] 邱泽华[1] 李素华 闫民正[3] 宋志英 唐磊[1] 

机构地区：[1]中国地震局地壳应力研究所,北京100086 [2]山西昔阳地震台,昔阳045300 [3]山西省地震局,太原030002

出　　处：《大地测量与地球动力学》2012年第1期51-55,共5页Journal of Geodesy and Geodynamics

基　　金：山西省地震局科研项目(01);地震行业科研专项项目(201108009)

摘　　要：分析TJ-2型钻孔应变仪记录与测震仪记录的结果表明:该应变仪对于100 Hz的采样率有良好的频率响应,能够记录完整的地震波;从近震到极远震,其频响范围与测震仪基本一致,且频响的变化一致性很好,在一定的约束条件下,应变地震波与地震波在时域与频率域能够高度吻合;但该应变仪记录的S波较弱。On the basis of the analysis of high sample rate of borehole strainmeter data and comparison with seismograph data,we studied the characteristics of these datum. The results show that the TJ-2 borehole volume strainmeter with high sample rate has good frequency response with the 100 Hz sample rate; and it has the ability to record a complete seismic wave; also there are basically the same frequency response range no matter how long the distance from the epicenter, and the frequency response changes are consistent. The high sample rate strain seismic wave and seismic wave can be highly consistent in time domain and frequency domain under some constraint conditions; however, the strainmeter with high sample had a weak response to the S seismic wave.

关 键 词：钻孔应变仪 体应变仪 频响性能 高采样率 应变地震波 

分 类 号：P315.72[天文地球—地震学]