摘要
成都基准台的重力观测曲线具明显年变周期,其干扰因素主要为气压和地下水。通过对重力、气压、水位的相关分析表明气压的干扰远大于水位的干扰。进一步作残差分析,排除了气压、水位的绝大部份干扰,消除了观测曲线的年变周期。
The gravimetric observation curves at Chengdu Standard Station showed significantly annual vari- ation period,with air pressure and ground water being main interference factors.It was demonstrated by the correlation analysis between air pressure,water level and gravity that the interference of air pres- sure is much larger than that of water lever.Through further residual analysis,the annual variation pe- riod of the observation curve was eliminated after much of interference of air pressure and water level had been precluded.
出处
《四川地震》
1991年第1期54-56,共3页
Earthquake Research in Sichuan
