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消除零漂是应用重力观测资料研究、预报地震的一项必不可少的工作。通常采用别尔采夫15数据组合法消除重力观测资料中的零漂。本文应用自适应技术提出了一个新的消除零漂的方法。此方法能够进行实时计算,并且比别尔采夫方法计算简单。本文应用自适应消除零漂的方法,对武汉台记录的1985年8月—10月三个月的重力资料作了消除零漂的处理,得到了非常满意的零漂曲线。同时还对原始重力数据和经过消除零漂处理后的重力数据作了傅里叶频谱分析,结果表明应用自适应方法在消除零漂过程中没有损失重力资料中的潮汐变化成分。
The elimination of zero drift is an indispensable task for applying gravity observation data to study and forecast earthquakes. Zero-drift in gravity observations is usually eliminated using the Berthold 15 data set. In this paper, a new method to eliminate zero drift is proposed using adaptive technique. This method enables real-time calculations and is computationally simpler than the Bersev method. In this paper, zero-drift adaptive method is used to eliminate the zero-drift of gravimetric data recorded by Wuhan station from August to October in 1985. The zero-drift curve is very satisfied. At the same time, the original gravimetric data and the gravitational data after eliminating zero drift were analyzed by Fourier spectrum. The results show that the application of adaptive method does not lose the tidal components in gravity data during the process of eliminating zero drift.