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中国地震局地震研究所与德国汉诺威大学大地测量研究所于１９９０、１９９２和１９９５年共同在滇西地震预报实验场和昆明进行了３次绝对重力测量。此外，１９９０、１９９２年在北京，１９９０年在武汉也进行了绝对重力测量。通过对各次绝对测量的结果进行比较，并与其它重力仪获得的数据的对比估算了它们的可靠性，进而详细地讨论了各个测点的重力变化。研究发现：在香山、黑龙潭、下关和保山观测到了－０１０μｍｓ－２以上的重力变化，其中前两个点是地下水位变化引起的，后两个点是地震活动引起的。此外，在北京的白家疃和昆明的野毛山不同时间的测量结果差异更大，但目前不能作出确切的解释
Earthquake Research Institute of China Earthquake Administration and the Institute of Geodesy, University of Hannover, Germany jointly conducted three absolute gravimetric measurements at the Earthquake Prediction Experimental Site in Western Yunnan and Kunming in 1990, 1992 and 1995. In addition, absolute gravimetric measurements were conducted in Beijing in 1990 and 1992 and in Wuhan in 1990. By comparing the results of each absolute measurement and comparing with the data obtained by other gravimeters, their reliability is estimated, and then the gravity changes at each measuring point are discussed in detail. The study found that the gravity changes of -010μms-2 were observed in Xiangshan, Heilongtan, Shimonoseki and Baoshan, of which the first two were caused by the variation of groundwater level, and the latter two were caused by seismic activity. In addition, the differences between the measurements at Baijiapo in Beijing and Yemaoshan in Kunming are greater at different times, but exact explanations can not be given so far