钻孔式气泡倾斜仪首批观测资料的调和分析结果

本文概述了我国首次研制成功的ZQY-2型钻孔式气泡倾斜仪的工作原理和技术指标,对在北京香山和江苏徐州两个地震台四个试验钻孔中所取得的首批观测资料进行了调和分析.结果表明,该仪器灵敏度高,线性范围大,长期稳定可靠,安装调试方便,能清晰地记录地倾斜固体潮和长周期地震波,填补了我国井下倾斜仪的空白.各测孔主要潮波的γ因子相对一致,中误差有随深度增加而减小的趋势,其中北京香山50m测孔东西向连续90天资料的M₂波γ因子中误差为±0.0046.仪器的主要技术指标和观测精度达到了同类仪器的国际先进水平.

THE RESULTS OF HARMONIC ANALYSES OF THE FIRST BATCH OF TIDAL DATA OBSERVED WITH BOREHOLE BUBBLE TILTMETER

In this paper, the working mechanism and technical indexes of ZQY-2 borehole bubble tiltmeter developed first in China have been briefly discribed. Harmonic analyses for the first batch of tidal data observed at Xiangshan Seismic Station （in Beijing City） and Xuzhou Seismic Station （in Jiangsu Province） have been carried out. The results have shown that the tiltmeter has high sensitivity and wide range of linear response; it can work steady for along time in borehole and can be adjusted conveniently; it can record clearly tilt tide and long-term seismic waves. The y factors of the main tide waves recorded in various observations remain relatively identical, and the mean square error of y factors reduce with increase in depth of boreholes. The mean square error of y factor of wave Ms computed from the data of E-W tilt tide for 90 days in succession in the borehole of 50 m deep at Xiangshan Station is±0.0046.