ON HIGH SAMPLE RATE OF BOREHOLE VOLUME STRAINMETER OBSERVATION
Guo Yanping 1) ;Qiu Zehua 1) ;Li Suhua 2) ;Yan Minzheng 3) ;Song Zhiying 2) ; and Tang Lei 1)
1)Institute of Crustal Dynamics，CEA，Beijing 100085;2)Xiyang Seismostation of Earthquake Administration of Shanxi Province，Xiyang 045300;3)Earthquake Administration of Shanxi Province，Taiyuan 030002
Abstract 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 TJ2 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.
