江宁地震台YRY-4型四分量钻孔应变仪可靠性检验

Reliability test of YRY-4 four-component borehole strain gauge at Jiangning Seismic Station

江宁地震台YRY-4型四分量钻孔应变仪于2006年12月安装运行,多年来积累了大量应变观测数据。采用Venedikov调和及相对标定等方法,从观测数据年变幅度、连续率及稳定性等方面,检验该台钻孔应变可靠性,结果表明,2009年以来,江宁地震台分量钻孔应变观测变仪器运行稳定、可靠,观测资料连续,符合地壳形变观测技术规范要求。

The YRY-4 four-component borehole strain gauge at Jiangning Seismic Station was installed in December 2006 and has accumulated a large amount of strain observation data over the years. Using Venedikov harmonic and relative calibration methods, the reliability of the borehole strain gauge at the station was checked from the aspects of the annual variation amplitude, continuity rate, and stability of the observation data. The results show that since 2009, the four-component borehole strain gauge at Jiangning Seismic Station worked stably and reliably, the observation data is continuous, and the recorded solid tide and seismic wave information are clear.