Lookup and eliminating for the interference of the body-strain at Liyang Station.
Chen Qi-lin · South China Journal of Seismology · 2004
From the minute-value curve of the body-strain at Linyang Station, we find two clearer interference. According to the record characters, we gradually looked up and analyzed the interference of instrument,signal connection, instrument grounding and outer-circumstances. We found that one was aroused by alternating current, the other was brought by the bad contact of signal connection. In terms of difference reasons, we effectively obviated two interference by taking relevant methods.