邢台地震台数字化水位监测效能分析

对邢台地震台地下流体数字化水位观测资料的内在质量及年、月、日动态特征等进行分析。结果表明:所辖流体观测井水位资料连续、可靠,内在质量较高,4个测点均是较理想的井水位观测点,其中,衡水井、辛集井水位对远场大震的同震效应明显;宁晋井因受井孔条件所限,同震效应不明显。井水位年变均为趋势性下降变化,但下降幅度均大于5 m,不利于地震中期或中短期地球物理异常信息的识别。在大部分月份月、日动态变化呈规律性,固体潮效应明显,这可在地震中短期地球物理异常监测中发挥一定的效能。

Analysis of underground water level observation data and monitoring efficiency evaluation of earthquake at Xingtai Seismic Station

This paper analyzed annual, monthly, and daily dynamic features of underground fluid observation data and its intrinsic quality of the Xingtai Seismic Station. The results show that the water level data of the fluid observation wells are continuous, reliable, and of high quality. Among them, the co-seismic response of Hengshui well water level and Xinji well water level to far-field large earthquakes is obvious, and Ningjin well is not obvious due to its well hole conditions. The annual variation of well water level shows a decreasing trend with a range >5 m, which is not conducive to the identification of precursor anomaly information in the middle or short period of earthquakes. The monthly and daily dynamic variations are clear in most months and the effect of the solid tide is obvious.