高台CZB-2A型竖直摆倾斜仪自架设以来，运行稳定，资料连续可靠，分析2008—2012年2月资料发现，高台地震台以北1200 km以内Ms5.0以上部分地震有短临前兆异常出现。

Since CZB-2A type vertical pendulum tiltmeter installed at gaotai seismic station

the system run stably and observation data continuous and reliable, Through the analysis of the data from March 2008 to February 2012，We found tilt data appear have short precursory anomalies before some earthquakes(Ms>5.0) happened at 1200Km north of within gaotai station, on earthquakes, We are initial discussed the observation data.