不同地震台站水管倾斜仪数据资料对比分析——以呼和浩特和包头台为例

Comparative analysis of water pipe inclinometer data of different seismic stations——Taking Hohhot and Baotou as examples

通过对呼和浩特地震台与包头地震台DSQ型水管倾斜仪的观测环境、仪器安装运行情况及2015—2017年观测资料的观测精度、稳定性、连续性和可靠性等方面进行对比,做出质量评定,运用多种处理方法进行了系统计算和分析。使用维尼迪柯夫调和分析得出M2波潮汐因子均方差质量指标,得出内在质量精度。应用契比雪夫多项式对年度观测资料拟合分析,从而得出仪器的相对噪声水平,进行两台指标对比分析。对台站地形变观测资料前兆观测系统做出正确的认识和客观的评价,为今后的地震前兆研究和预测具有重要的实际意义。

This paper compares and analyzes the observation environment,installation and operation of the DSQtype water pipe inclinometer of the Hohhot reference seismic station and Baotou seismic station,and the observation accuracy,stability,continuity,and reliability of observation data from 2015 to 2017.Contrastive analysis,quality evaluation,and systematic calculation and analysis were performed using multiple processing methods.The quality index of the mean square error of the M2 wave tidal factor is obtained by using the Venidikov harmonic analysis,and the intrinsic quality accuracy was obtained.The Chebyshev polynomial was used to fit and analyze the annual observation data to obtain the relative noise level of the instrument,and the two indicators were compared and analyzed.It is of great practical significance to make a correct understanding and objective evaluation of the precursory observation system of the station’s topographical change observation data,and is beneficial to the future earthquake precursory and prediction research.