云县台SQ水平摆与VP垂直摆观测资料对比分析

从数据完整率、年变幅度、形态特征、相关性等角度出发对SQ水平摆与VP垂直摆观测数据进行对比分析。结果表明:2套仪器均有较强的稳定性,数据有较高的完整率。通过对比分析,确定云县台SQ水平摆和VP垂直摆产出的数据正确。从短期资料看,2套仪器均能清晰记录日波、半日波固体潮汐,固体潮观测曲线的相位与理论值相一致。从长期资料看,云县台SQ水平摆产出的数据在长期趋势上与真实地倾斜存在较大差异,VP垂直摆更能真实反映监测区域地倾斜变化特征,利用VP垂直摆替代SQ水平摆进行地倾斜观测可行。

COMPARATIVE ANALYSIS OF OBSERVATION DATA BETWEEN SQ HORIZONTAL PENDULUM TILTERMETER AND VP VERTICAL PENDULUM TILTERMETER IN YUNXIAN SEISMIC STATION

The observation data of SQ horizontal pendulum and VP vertical pendulum are compared and analyzed in terms of data integrity rate,annual variation amplitude,morphological characteristics and correlation.The results show that the two sets of instruments have strong stability and high data integrity.Through comparative analysis,it is determined that the data of SQ horizontal pendulum and VP vertical pendulum of Yunxian station are correct.From the short-term data,the two sets of instruments can clearly record the solid tide of daily wave and half daily wave,and the phase of the solid tide observation curve is consistent with the theoretical value.From the long-term data,there is a big difference between the data of SQ horizontal pendulum of Yunxian station and the real tilt in the long-term trend.VP vertical pendulum can more truly reflect the change characteristics of the tilt in the monitoring area,and it is feasible to use VP vertical pendulum instead of SQ horizontal pendulum to observe the tilt.