四川小庙、姑咱地震观测站水管倾斜仪观测资料对比分析  

Comparative analysis of water pipe inclinometer observation data in Xiaomiao and Guza,Sichuan

作　　者：徐亚飞 周朝晖[1] 张晓明[1] 张菊 XU Yafei;ZHOU Zhaohui;ZHANG Xiaoming;ZHANG Ju(Sichuan Earthquake Agency,Chengdu 610000,China)

机构地区：[1]四川省地震局,成都610000

出　　处：《地震地磁观测与研究》2024年第4期52-61,共10页Seismological and Geomagnetic Observation and Research

摘　　要：利用数字水管倾斜仪记录的固体潮资料,分析仪器稳定性、观测精度及各项参数。结果表明,姑咱站水管倾斜仪观测资料精度优于小庙站。水管倾斜观测中,为减少人为干扰(自然环境、仪器故障等),可以采取尽量缩短仪器维修、调零、校准的操作时间等措施。通常,地震震前观测资料异常持续时间较短,对资料的稳定性影响不大,但却能明显改变观测资料的年变形态。观测资料异常时,应认真按照流程进行异常核实,以识别震前异常。Using the solid tide data recorded by the digital water pipe inclinometer,we analyzed the stability,observation accuracy,and various parameters of the instrument.The results indicate that the accuracy of the water pipe inclinometer observation data at Guzan Station is better than that at Xiaomiao Station.In the observation of inclined water pipes,in order to reduce human interference(such as natural environment,instrument failure,etc.),measures can be taken to shorten the operation time of instrument maintenance,zeroing,and calibration as much as possible.Usually,the duration of abnormal observation data before an earthquake is relatively short,which has little impact on the stability of the data,but can significantly change the annual variation pattern of the observation data.When there are anomalies in the observation data,it is necessary to carefully verify the anomalies according to the process to identify the pre earthquake anomalies.

关 键 词：影响因素 资料质量 小波分析 映震能力 

分 类 号：P315.7[天文地球—地震学]