地倾斜观测资料的归算

THE REDUCTION OF THE OBSERVATIONAL DATA ABOUT GROUND TILT

摘要:

本文针对我国地倾斜观测仪器设置的实情,推导出由任意两方向设置的倾斜仪观测资料计算地倾斜角及其倾斜方位角的通用公式,以及归算至南北、东西方位的公式。用本文的公式对泰安台两种类型倾斜仪观测资料进行了归算,归算后其倾斜固体潮曲线同步变化,相关性明显增强。对大同-阳高M_S=6.1地震前的倾斜异常资料也进行了归算,归算后异常也比较明显。最后,作者还对我国地倾斜观测资料的归算工作提出了具体意见。

Abstract:

In this paper,in view of the actual situation of setting ground tiltmeters in our country,we have derived the current formulae which are used to calcutate the ground tilt azimuth and the dip angle by using observations of the tiltmeters installed in two arbitrary directions and the formula which is used to reduce the data to NS and EW directions.For two kinds of tiltmetersof Taian station,the curves of ground tilt tide have presented synchronous changes after the data have been reduced by using the formulae,and the correlativity have increased obviously. Also,the great changes have taken place after the tilt anomaly data before the Datong-Yang-gao M_S=6.1 earthquake have been reduced,In the end of this paper,the concrete opinions about the reduction of ground tilt observations are given.