新疆竖直摆倾斜仪的观测精度与震兆异常

OBSERVATION ACCURACY AND SEISMIC PRECURSOR ANOMALIES OF VERTICAL PENDULUM TILTMETERS IN XINJIANG

摘要:

对竖直摆倾斜仪在新疆近10年的运行情况做系统分析后认为,该类仪器观测精度较高且功耗小,管理方便.其中井下仪器稳定性好,受干扰小,性能明显优于峒体仪器.地震前显示了一定的中短期前兆异常.

Abstract:

The systematic analysis to works of the vertical pendulum tiltmeters in Xinjiang region in nearly 10 years is given. The result shows that this kind of tiltmeter has high observation accuracy, is easy to mainten and low to power consumption. As the conparison, the observation quality of downhole tiltmeter is better than one in cave because it is not easy to be disturbed. Before many earthquakes there are medium and short term seismic precursor anomolies in data of the tiltmeters.