衡水冀16井水位观测数据质量分析

对2017—2019年衡水冀16井水位观测资料的完整率和稳定性、变化形态、观测精度、潮汐因子、中误差、同震效应等进行分析，结果表明：①衡水冀16井水位观测资料完整率较高，仪器工作稳定，符合地下水位观测规范要求；②固体潮效应显著，潮汐响应能力较强，潮汐因子平均值为2.1—2.2，观测精度均值为0.01左右，相对误差较小，且较稳定；③同震响应能力较强，能记录到全球7级以上地震，同震水震波波形清晰；④水位与气压变化之间相关性较好，整体呈负相关；⑤水位观测资料年、月、日变化规律清晰，有望在地震地球物理监测中发挥一定效能。

Quality analysis of water level observation data at Hengshui Ji No.16 well

The integrity and stability, variation pattern, observation accuracy, tidal factor, root mean square error, and the co-seismic response of water level observation data in Hengshui Ji No. 16 well from 2017 to 2019 are analyzed. The results show that:① the water level observation data of Hengshui Ji No. 16 well are continuous, the integrity rate is high, and the instrument is stable, which meets the requirements of the groundwater level observation code;② the solid tidal effect of the well is significant, the tidal response-ability is strong, the average value of a tidal factor is 2.1-2.2, the mean observation accuracy is about 0.01, the relative error is small and relatively stable; ③the co-seismic response-ability of well water level is strong, and the co-seismic wave of M ≥ 7.0 global earthquakes can be recorded, and the waveform is clear; ④the correlation between water level and pressure dynamics is good, and there is a negative correlation in general; ⑤the annual, monthly, and daily dynamic variations of water level observation data are clear, which is expected to play a certain role in earthquake precursor monitoring.