对静乐井SWY-Ⅱ水位仪和LN-3A水位仪从稳定性、数据一致性、内在质量、系统漂移、水震波、气压效应、自然环境干扰7方面进行了对比分析，结果显示：①SWY-Ⅱ水位仪和LN-3A水位仪运行稳定；②两套仪器观测数据一致性较好；③两套仪器测量精度均优于0.001m，平均值一致性较好。④通过计算分钟值数据，两套仪器M2波潮汐因子及其观测精度较为接近；⑤通过与SW40-1水位仪进行对比，两套仪器均存在不同程度系统漂移；⑥两套仪器分钟值数据记录水震波时间及振幅差异明显；⑦两套仪器的气压效应、受自然环境干扰影响较为一致。

In the paper，the SWY-Ⅱ and the LN-3A instruments are contrasted from the seven aspects of stability，data consistency，internal quality，systematic drift，water-seismic waves，barometric effect and natural environment interference at the Jingle well. The main conclusions are as follows: ①The two digital instruments are stable. ②The observation data of the SWY-II instrument coincided with the LN-3A instrument. ③The measurement accuracy of two instruments is basically the same. There is a good identity in the mean consistency of the two instruments. ④There is little difference in the tidal factor of M2 wave and the observation precision between the two instruments. ⑤The two instruments have systematic drift in varying degrees. ⑥There is a big difference in the vibration time and the ranges of the water-seismic waves between the two instruments. ⑦There is little difference in the barometric effect and the natural environment interference between the two instruments.

中国地震局监测预报司“三结合”项目(150403)资助