永年地震台水管加速N倾异常分析

摘要

There is accelerated northward anomaly of water tube tiltmeter NS component at Yongnian Seismic Station from September 2012.We survey the cavern environment,instrument sys-tem,environmental disturbance,and power supply system,calculating the theoretical values of load influences to crustal tilt observation by three-dimensional concentration load model, while the load influences include quarry and soil excavating.We primarily judge the anomaly caused by environmental disturbance through qualitative analysis and quantitative calcula-tion.%永年水管倾斜 NS 分量2012年9月出现加速 N 倾异常，从洞室环境、仪器系统、供电系统、环境干扰等方面进行调查和分析，采用三维集中荷载模型，计算采石场、挖土场等荷载变化对水管倾斜观测影响的理论值，采用定性与定量相结合的方法，判定此项异常应为周围环境干扰造成的荷载变化所致。