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目前我国地震系统相对重力测量的重要目的是为了探索地震前兆。一般来说,二点之间的重力差——段差的精度能控制在10μgl。以内,大概能确定“异常量”——可能是地震前兆。我国各省局、队大都使用石英弹簧重力仪。如沃登、环球等。而且都是规定三程观察。但不同的仪器是否可采用不同的工作方法?关键是工作质量能否达到要求。我所的工作基本上是采用双程测量方法。因此曾产生一些反对的看法。有些同志提出怀疑或认为资料不能使用。为此我们把问题提出来,并加以分析。
At present, the important purpose of relative gravity measurement of seismic system in our country is to explore the earthquake precursors. In general, the difference in gravity between two points - the accuracy of the step difference can be controlled at 10 μgl. Within, probably to determine the “anomaly” - may be a precursor to the earthquake. China’s provincial bureau, the team mostly use quartz spring gravity meter. Such as Woden, Universal and so on. And all three-way observation. But different instruments can use different methods of work? The key is the quality of work can meet the requirements. My work is basically a two-way measurement method. So there have been some objections. Some comrades have raised doubts or believe that information can not be used. To this end, we put forward the problem and analyze it.